Sl. Reference of Tender Document Bidder’s Query PDIL/TFL’s ... · Sl. Reference of Tender Document Bidder’s Query PDIL/TFL’s ... ... plant

PROJECT : COAL GASIFICATION BASED AMMONIA-UREA PLANT AT TALCHER, ODISHA TENDER NO. : PNMM/PC-150/E-4003/NCB STEAM GENERATION PLANT SUBJECT : REPLY TO PRE-BID QUERIES : TECHNICAL – LOT 1

Sl. No.

Reference of Tender Document Bidder’s Query PDIL/TFL’s Reply Section No. Page No. Clause No. Subject

Page 1 of 42

1. PC-150/E-4003/P-I/S-IV SHEET 72 OF 87

57.0 UNDERGROUND OBSTRUCTIONS

The soil investigation report furnished in the NIT is indicative only and is enclosed purelyfor information/guidance purpose to the bidders.The contractor shall carry out its owndetailed soil investigation for the proposed plant. Design of the foundation system of theplant shall be based, only on the site specific report. Nothing extra shall be paid in case ofany variation arising out of the soil report conducted report conducted by the bidders andthe data given in the tender. In the event, CONTRACTOR encounters any undergroundobstructions, the same shall be removed by CONTRACTOR without any extra costimplications to the OWNER.

1. Soil Investigation Report is not available with NIT. 2. Estimation of civil works shall be based on preliminary soil investigation report. Any variation in soil investigation report and soil data after award of work shall be mutually discussed and resolved during execution. 3. Estimation of underground obstruction is not possible pre-bid since underground obstruction are not known hence same needs to be discussed mutually during execution (if applicable). Cost of same can not be considered during bidding.

1.0 Soil Investigation Report is not available.2.0 Bidder shall visit the site & satisfy themselves about the nature of soil & if felt necessary, bidders shall conduct soil investigation to firm-up their design data for bidding purpose.3.0 Refer Clause 57 of GCC . Amendment to clause No. 2.1 of Section-VI-1.0 for soil investigation report shall be issued.

2. V

10 of 55

1.2.8.7

CONTRACTOR shall arrange Third Party Inspection and quality certificationof EQUIPMENT, as described in FINALPROPOSAL/CONTRACT.Third party Inspection shall be carried by LLyods/BV/TUV/LRIS

Third Party/Consultant inspection for pressure parts and valves is not needed for domestic contracts since these are covered under Statutory IBR inspection.

NIT condition is minimum requirement to be followed in addition to the IBR requirement. In case of any ambiguity shall be reviewed during detail engineering.

3. PC150/E/4003/SecVI-1.0 Sheet 3 of 6

2.1 However, for reference purpose only, please see attached Soil Investigation Report.

Soil investigation report was not attached. Please provide the same. Soil investigation report for the proposed plant area is needed.

Soil Investigation Report is not available.Bidder shall visit the site & satisfy themselves about the nature of soil & if felt necessary, bidders shall conduct soil investigation to firm-up their design data for bidding purpose. Amendment to clause No. 2.1 of Scetion-VI-1.0 for soil investigation report shall be issued.

4. General - - Soil investigation report Please furnish the soil investigation report and foundation recommendations.

5. PC150/E/4003/SecVI-5.5 1939 of 2464 (Sheet 44 of 200)

- Borelog Details Kindly provide us with any preliminary Bore Log details/Soil data of the project under consideration.

6. PC150/E/4003/ VI-1 5 of 6 2.2 (g) Control Room for Steam Generation PlantControl Room shall be located within the battery limit (B.L) of SGP. Minimum two no. common goods cum passenger industrial Lift of min. Two tonne Capacity up to boiler upper drum level to take care of operation & maintenance activities is also required. Lifts shall cover all the floor levels. Interconnection platform at alternate floors among boilers shall also be provided. The integrated Control Room shall be provided for all the boilers and associated system of Steam Generation Plant.

Bidder presume that the control room specified here is for controlling the boiler controls only and no Turbine control or any other controls beyond the terminal point of bidder. TFL/PDIL to review and confirm

Bidder's understanding is correct.

7. PC150/E/4003/ VI-1 5 of 6 2.2 (h) All interconnecting piping between LSTK Battery Limit and balance of plants shall be under Owner’s scope. Owner shall provide Make-up DM Water, Condensate, Process Water/ Service Water, Cooling water, Saturated HP Steam for superheating, Plant Air/ Instrument Air, Inert Gas, Fire Wateretc., at Steam Generation plant battery limit.

TFL/ PDIL to provide the tentative location of all these utilities in the plot plan to avoid ambiguity at later stage and for estimation purpose.

For tentative location Refer Plot-Plan (Enclosed) Battery limit A and B for piping and material handling utilities respectively .

No condensate shall be made available at SGP B.L.

Inert Gas shall not be provided for regular consumption and conveying purpose.

Amendment to clause No. 2.2 (h) shall be issued.

8. SECTION: VI - 1.0 282/2464 Attachment-1: Plot Plan

Plot Plan Kindly provide the AutoCAD drawing for the same for incoroprating the Boiler Layout in

Same shall be provided during detailed engineering.


Sl. No.


Page 2 of 42

the same. 9. Layout We request to please provide the

layout in AutoCad Format 10. PC150/E/4003/ VI-1 Plot plan

Drg No-PC009-0000-0001

The feed to Crusher at Coordinates at N1500 and E370 has feed from both Coal yard as well as Petcoke yard, bidder presume that TFL/ PDIL doesn't envisage petcoke firing in the PC fired Boilers. TFL/PDIL to confirm

Confirmed.

11. Plot plan drawing(PC009-0000-0001 Rev6)

- - Battery limit We request you to mark/ indiate the battery limit in the layout for : HP steam input HP steam output LP steam output condensate return Plant and Instrument air DM water, CW water, Potable water fire water coal Chemicals Roads and drain Effluents

HP steam input - Refer Plot-Plan Battery limit A HP steam output - Refer Plot-Plan Battery limit A LP steam output - Refer Plot-Plan Battery limit A condensate return - Refer Plot-Plan Battery limit A Plant and Instrument air - Refer Plot-Plan Battery limit A DM water, CW water, Potable water -Refer Plot-Plan Battery limit A fire water - Shall be finalised during detail engineering coal - Refer Plot-Plan Battery limit B Chemicals -Refer Plot-Plan Battery limit A Roads and drain - Refer Sl. No. 12 Effluents -Refer Plot-Plan Battery limit A

12. - - - Plot plan drawing(PC009-0000-0001 Rev6) We request you to indicate the battery limit line in the layout, so that the roads and drain & other scope of work will be clearly known. (scope of peripheral road shown in layout is not clear)

Peripherals roads & drains of outside battery limit is not in bidder's scope.However, Road & Drainage inside the unit to be considered & its interconnection upto adjacent peripheral road & drain is in bidder's scope.

13. PC009-0000-001 Dwg sht-01 of 01

-- Piping Battery limit Location of Piping Battery limit to be indicated Over all Plot plan to prepare the internal Plant arrangement and Pipe rack Arrangement.

For tentative location of tie-in point refer plot-plan attached.

14. VI-1.0 IV

-- 7 of 87

-- 3.0

PLOT PLAN (PC009-0000-0001) 'BATTERY LIMIT' shall mean the outer limits of boundaries of the areas within which the Plants and associated facilities shall be located.

Owner may please indicated battery limit in plot plan for clarity.

Please refer Plot Plan.

15. PC150-1000-032 Sht-01 of 01

-- Battery Limit interface for SGP As per the schematic the following services are not included. Pl confirm availability of these services at SGP Battery Limit : 1) Cooling Water Outlet Line from SGP 2) Service water inlet to SGP 3) Fuel Gas ( NG) Flare battery limit

Sr. no. 1 & 2 Confirmed. Further, Regarding sr.no.-3, NG will be provided at 6.5-10.5 kg/cm2g pressure at LSTK's battery limit. Amendment shall be issued.

16. PC150-1000-032 Sht-01 of 01

-- Battery Limit interface for SGP Valving (Double Block and Bleed), Flow measurement arrangement required at the battery limit to be furnished.

Double Block & Bleed valve in all pipelines (incoming/ outgoing) shall be provided at B.L. by LSTK contractor. All the feed materials input to Boiler (Coal, fluxant, DM water, utilities including HP Saturated steam coming from Ammonia-Urea plant for Super heating in Boiler etc), coming as


Sl. No.


Page 3 of 42

input to the Boiler shall be measured and indicated on DCS. Similarly, total export quantity of Steam and internal steam consumption shall be measured and indicated on DCS as output from Boiler.

17. SECTION: VI - 2.0 Sheet 3of 7 286/2464

1.0 RUN OF MINE (ROM) COAL Table:-1.0

The proximate analysis not summing to 100%, FC we have taken on difference. Also HHV provided is on as received basis. 3227.82 kcal/kg is the computed GCV (HHV) on as received basis against the given 4015kcal/kg (16.81MJ/kg), Kinldy recheck.

Bidder to consider the coal analysis as given below for works cost guarantee only. However, Bidder shall have to consider the range of ROM coal (Refer Annexure-1 to Section-VI-2.0) for design of SGP:- Description Raw Coal at B.L. of SGP Proximate Analysis Moisture, %wt 14.77 Ash, %wt 39.03 Volatile, %wt 23.1 Fixed Carbon, %wt 23.1 Fluidity point, C >1400 HHV MJ/kg, given MF 16.81 Ultimate Analysis (MAF basis) Carbon, %wt 79.66 Hydrogen, %wt 5.30 Oxygen, %wt 12.60 Chloride, %wt 0.01 Sulfur, %wt 0.66 Nitrogen, %wt 1.78 Ash Content SiO2,%wt 60.85 Al2O3,%wt 27.9 Fe2O3,%wt 6.25 TiO2,%wt 1.77 P2O5,%wt 0.47 CaO, %wt 1.19 MgO, %wt 0.94 MnO, %wt 0.04 SO3,%wt 0.18 NiO, %wt 0.00 V2O5,%wt 0.00 Undetermined, %wt 0.41 Amendment to NIT shall be issued.

18. PC150/E/4003/VI-2 3 of 7 1.0

The Summation of Moisture,Ash, Fixed Carbon and Volatile matter is working out to be 109.77, request you to provide the value matching to 100%. Also the HHV of 16.81 MJ/Kg is presumed to be Moisture free (Dry basis) please confirm

19. PC150/E/4003/VI-2 3 of 7 1.0

The HHV based on the ultimate analysis works out to be 3227 Kcal/kg. TFL/PDIL to confirm whether the 3200 Kcal /kg specified in this clause is HHV or LHV.

20. VI -2.0 3 of 7 1.0 Table:-1.0 : Coal Analysis Kindly provide ash analysis also indicating ash deformation temperatures (Reducing atmosphere).

21. SECTION: VI - 2.0 Sheet 3 OF 7 286/2464

1.0 RUN OF MINE (ROM) COAL Table:-1.0

Limestone analysis complete analysis is required not only purity of 85%

Purity range of fluxant will be 65% and above for design purpose. However, performance guarantee will be based on 65% purity. Amendment shall be issued.

22. RAW MATERIAL, PRODUCT AND UTILITY SPECIFICATIONS (Doc. No:PC150/E/4003/SECVI-2.0)

Sheet 3 OF 7

2 Please provide Proximate Analysis & Ultimate Analysis of Fluxant. Please indicate HGI of FluxantPlease inform availability of Fluxant

Purity range of fluxant will be 65% and above for design purpose. However, performance guarantee will be based on 65% purity. Amendment shall be issued.


3.0 UTILITIES Return Header Temperature, o C: By LSTK Contractor Kindly inform the Return water temperature maximum allowable.

The return temperature of cooling water is 43 Deg celcius. Amendment shall be issued.

24. PC150/E/4003/Sec VI - 2.0 3 of 7 2 Fluxant ( if required) We are not envisaging the firing of fluxant in the proposed boiler. Kindly confirm.

Purity range of fluxant will be 65% and above for design purpose. However, performance guarantee will be based on 65% purity.


Sl. No.


Page 4 of 42

If fluxant to be used in the boiler, then please provide the fluxant proximate, ultimate and proximate analysis and material characteristic like Density, Moisture Content, temperature.

Amendment shall be issued.

25. PC150/E/4003/Sec VI - 2.0 4 of 7 3.3 Instrument Air - High pressure storage vessel with compressor Plant air and Instrument air shall be provided by the customer at the battery limit. Compressor is not considered in our scope of supply.

Instrument air shall be made available at SGP B.L. by Owner/ PMC. Bidder to consider the suitably sized instrument air buffer storage for safe shut down & fluctuation control and Instrument air distribution network within LSTK battery limit. Amendment shall be issued.


3.7 Process Water/ Raw water (after treatment) UNDER OWNER’S SCOPE

3.7 Process Water/ Raw water (after treatment) UNDER OWNER’S SCOPE

We understand that the Deaerator is in scope of tkII. We require the Condensate inlet flow, its temperature & pressure to the deaerator, is there a loss in condensate inlet flow and shall be make it up with the DM water? We have considered the Deaerator feed water outlet temperature as 140°C based on the available heating steam at all load constant PT rating -4 kg/cm2(g) and 180°C, (we also note that there are no HP heaters and hence the same temperature is at the inlet of the boiler economizer as well).

No condensate receive/ discharge at Bidder's battery limit is considered. DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. Amendment shall be issued.

27. PC150/E/4003/Sec VI - 2.0 5 of 7 3.4 and 3.7 Demineralised water .. Process water… We presume the condensate return water temperature at the battery limit is around 89 deg.c. Please confirm

No condensate receive/ discharge at Bidder's battery limit is considered. DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. Amendment shall be issued.


3.11 NG (Under Owner Scope)

Kindly specify where to utlize the NG.

NG may be required for start-up burners. NG will be provided at 6.5-10.5 kg/cm2g pressure at LSTK's battery limit. Amendment shall be issued.


4.0 SPECIFICATION OF PRODUCT

We have considered the ain steam pressure and temperature as 110kg/cm2(g), 520°C. Kindly ellaborate the difference between the maximum temperature (525°C) and design temperature (540°C).

Steam temperature min./ Nor./ Max. 515/ 520/ 525 deg. C is operating temp. 540 deg.C is design temp. Further, We have already mentioned the Material of construction for superheating coil also in the Section-VI-4.0 of NIT.


Sl. No.


Page 5 of 42

30. SECTION: VI - 2.0 -- 298/2464

Anexxure-1 Natural Gas Composition Kindly specify where to utlize the NG.

NG may be required for start up burners. NG will be provided at 6.5-10.5 kg/cm2g pressure at LSTK's battery limit. Amendment will be issued.

31. SECTION: VI - 3.0 Sheet 4 of 10 303/2464

1.2 Broad Scope of Supply/ Work/ Services

g) Dedicated RCC Flue Gas Stack for each Boiler to meet emission norms of Central andState pollution control boards whichever is more stringent.

RCC Stack by tkII, kindly reconfirm. Confirmed.



l) Oily Water Separator (OWS) inside LSTK Contractor’s B.L. NA OWS to be considered as per NIT.



Suitable High pressure Instrument Air storage Vessel with compressor & necessaryarrangement for supplying instrument air for 15 minutes’ operation or safe shutdownwhichever is higher.

In the earlier & section (refer below point) section the instrument air compressors are excluded from tkII scope, kindly reconfirm the actual scope.

Instrument air shall be made available at SGP B.L. by Owner/ PMC. Bidder to consider the suitably sized instrument air buffer storage for safe shut down &fluctuation control and Instrument air distribution network within LSTK battery limit. Amendment to clause No. 1.2 (t) of Section-VI-3.0 shall be issued.


1.2 BROAD SCOPE OF SUPPLY/ WORK/ SERVICES

1.3 The following Offsite & Utility plants shall be excluded from the scope of LSTKcontractor of Steam Generation Plant:III. Instrument & Plant air system

Refer above point. Please refer reply sl. No. 33 above.

35. PC150/E/4003/ VI-3.0 4 of 10 1.2 ® Supply of chemicals, lubricants and consumables required for a period of six months from completion of Successful Commissioning.

Supply of chemicals inlcuding reagents for DeSox, DeNox is part of customer scope.

Shall be in the Bidder's scope as per sr. no. r of Clause no. 1.2 of Section-VI-3.0 of NIT.

36. PC150/E/4003/ VI-3.0 4 of 10 1.2 (t) Suitable High pressure Instrument Air storage Vessel with compressor & necessary arrangement for supplying instrument air for 15 minutes’ operation or safe shutdown whichever is higher.

Requirement of compressor is not clear since the Instrument air is supplied by owner at the battery limit.

Instrument air shall be made available at SGP B.L. by Owner/ PMC.Bidder to consider the suitably sized instrument air buffer storage for safe shut down & fluctuation control and Instrument air distribution network within LSTK battery limit. Amendment to clause No. 1.2 (t) of Section-VI-3.0 shall be issued.

37. PC150/E/4003/Sec VI - 3.0 6 OF 10 1.2 0 Obtaining necessary statutory clearances pertaining to execution of Steam package.

Obtaining all statutory clearances w.r.t to steam generation package is in customer scope. We shall provide necessary documentary support to the customer for obtaining all clearances

Bidder to comply with NIT.

38. Tendernotice_1 - BIDDER’S SCOPE OF WORK (PC009/E/4003/SECVI-3.0)

6 of 10 (305 of 2464 of overall spec)

bb Custody flow meters of various raw materials & utilities Custody flow meter is very expensive in comparison to normal flow meter and generally used for metering process in which billing is required. Kindly clarify explicitly in which line custody flow meter is required for this job.

Custody flowmeters are not required. Flow measurement instrumentation / devices for raw material, utilities etc. including the streams / flow which one required to be measured for PGTR shall be provided. The measuring instruments shall be well proven and reliable one. Amendment shall be issued.

39. V VI -3.0

19 of 55 4 of 10

1.2.10.1.2 1.2 (p)

The warranty period for the EQUIPMENT supplied by CONTRACTOR shall be valid for minimum 12 months for all EQUIPMENT except for catalysts from the date… First fill of all catalyst, chemicals & lubricants and requirement during Pre-Commissioning, Commissioning, Sustained Load Test…. Provision of catalyst loading/unloading facilities

Owner may kindly acknowledge that all clauses relating SCR catalyst will be applicable only in case of SCR system used for Nox control. Kindly confirm.

Confirmed.


Sl. No.


Page 6 of 42

VI-5.3.1 VI-5.3.7 VI-5.3.7

8 of 75 4 of 42 3 of 11

5.2.2 1.0 2.1 (h)

……..Steam generators and auxiliaries (with 2W+1S configuration) including FGD/SCR/SNCR (as required) to meet statutory requirements……. Life of the Catalyst (if applicable)

40. VI -3.0 4 of 10 1.2 (q) Chemical storage facility for 15 days. Owner to elaborate this requirement.

Storage facility for 15 days for Chemicals which are required for Boiler operation.

41. PC150/E/4003/SecVI-3.0 6 of 10 1.2 p Supply of spares shall be as per Section-VI-10.0 of NIT. The mandatory spares list is standard. We shall supply the mandatory spares for the items which is in our scope of supply

As per NIT.


2.0 REQUIREMENT PERTAINING TO STEAM GENERATION PLANT

Note-2:- A stream of LP steam of 10 MT/hr shall be made available by LSTK Contractor at theirB.L. for owner use. The specification of steam has been mention in section 2.0 Part-II Technical.

The condensate inlet flow and temperature is required for Deaerator Heat Mass Balance. But if the LP steam which is to be utilized for deaearation if limited to 10TPH, the feed water temperature can only be around 105°C and for 140°C, it would be around 140°C. These figures are based on some logical condenstae return assumptions.

No condensate receive/ discharge at Bidder's battery limit is considered. DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. 10Mt/hr LP steam shall be require for Owner use which need to be made available by LSTK Contractor at SGP B.L. as per NIT. Amendment will be issued.



One no. DM water storage tank along with required pumping facilities and interconnectingpiping & fittings for catering 4 hours requirement at normal operating condition.

To size the tank, the DM water make up is required for which the condensate return to the Deaerator is required.

No condensate receive/ discharge at Bidder's battery limit is considered. DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. Amendment will be issued.


De-Aerator Common De-aerator for three boilers shall be considered for Steam Generation Plant. De-aeratingcapacity of De-aerator shall be equal to gross MCR steam generation capacity of all 3 nos. Boilers.

As the deaerator common for all the three boilers & one boiler is not going to be operational out of the three, the deaerator shall be sized for two boiler alone, kindly confirm.

De-areator will be designed as per clause no. 3.2 of Section-VI-4.0 of NIT.


De-Aerator De-aerator Steam may be arranged from two sources:1) Boiler Blow Down Drum; 2) BalanceLP/MP Steam available from turbine drives inside steam generation plant B.L.

Condensate quantity is required as mentioned above.

No condensate receive/ discharge at Bidder's battery limit is considered.DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. Amendment will be issued.


BFW Pump Each Boiler shall have dedicated 1W+1S BFW Pump configuration. As only 2 boilers are operational we suggest 2w+1s common for all the three boilers, wish to discuss.

2W+2S BFW pumps shall be provided for all 3 nos. boilers. Common suction and common discharge header shall be considered all pumps. Further, provision (tapping point along with valve & blind flange) for the connection of 2 nos. additional BFW pumps to be kept by LSTK Contractor for future requirement.


3.3 Steam Pressure Reducing and De-superheating Station (PRDS)

Contractor shall provide complete steam pressure reducing and de superheating station (PRDS)system to meet the steam requirement during unit normal operation, intermittent steam requirementof units and station and auxiliary steam equipment for the start-up of the units. Each unit shall beprovide with a high capacity pressure reducing and de superheating station (HCPRDS) taking tap offfrom Main Stream (MS) or intermediate stage of super-heaters (as per bidder’s standard practice). The steam systems of all units shall be suitably inter connected, so as to enable start-up of unit bytaking auxiliary steam from any of the other running unit of the station.

No aux. steam requirement for tkII Cold Cyclone CFBC Boiler. Further, we wish to discuss.

Noted. However, quantity and condition of steam shall be furnished for Start-up.


Sl. No.


Page 7 of 42

48. PC150/E/4003/ VI-4 5 of 13 3.2 Level transmitter with 2oo3 voting logic shall be provided. Bidder presume that 2 out of 3 logic is required for Level Transmitter

Confirmed. However, for remaining boiler instrumentation & control, instrument detail design basis / tender condition to be followed.

49. PC150/E/4003/ VI-4 7 of 13 3.4 ID & FD Fans The fan speed shall not exceed 1000 RPM.

Bidders requests TFL/PDIL to allow upto 1500 rpm for FD fans based on proven practice.

Noted. Amendment to NIT shall be issued.

50. PC150/E/4003/SECVI.-4.0 7 of 13 3.4 FD & ID Fans : The impeller shall be hard faced to avoid erosion of the impeller blades.

The Offered ID fan Impeller shall be P355NH Material and blade material is Naxtra 70 provided with replaceable wear liner of XAR 400 material of high abrasion resistant which takes care of erosion and hard facing is not envisaged. FD Fan is handling clean air fan hence same is not applicable. This is as per Bidder's standard practice

Tender Condition prevails.


3.4 ID & FD Fan ID & FD Fans- Capacity of each fan shall be 120% of normal conditions. As per Section-VI- 5.3.7: DESIGN PHILOSOPHY – BOILER, we have considered 2 x 60% Fans.

for ID & FD fan, cl 3.4 (process design basis Section VI-4.0) shall govern i.e. Capacity of each fan shall be 120% of normal conditions.Amendment shall be issued.

52. PC150/E/4003/SECVI.-4.0 8 of 13 3.5 Primary Air Fans: However, the fans shall also be provided with inlet guide vanes operation in case of any problem in the VFD

Bidder would like to offer centrifugal type primary air fans along with VFD either Inlet damper control mechanism or Inlet guide vane control mechanism as per proven design and based on Fan selection paramters . Please confirm

Noted.

53. PC150/E/4003/SECVI.-4.0 8 of 13 3.6 FD Fans / Secondary Air Fans: In addition, the fans shall also be provided with inlet guide vane operation in case of any problem in the VFD.

Bidder would like to offer centrifugal type FD/ Secondary Air fans along with VFD either Inlet damper control mechanism or Inlet guide vane control mechanism as per proven design and based on Fan selection paramters . Please confirm


54. PC150/E/4003/ VI-1 4 of 6 2.2 © c. Gaseous effluents Flue Gas generated in the Boilers shall contain SOx, NOx, un-burnt combustibles, dust particles, etc. and shall be discharged to atmosphere through dedicated chimneys after necessary abatement/treatment to meet the latest statutory requirement / guidelines.

Bidder presume that type of DeSOx (Wet FGD/ Semi Dry FGD including its MOC ) and DeNOx (Urea or Ammonia Based) has to be chosen by bidder suitably according to their experience. TFL/PDIL to review and confirm

Option is open to bidder. However, Bidder to meet emission norms as per CPCB/ state P.C.B whichever is stringent & unlimited liability for not meeting emission norm.MOC shall be as per sr. No. 5 of Clause 3.18 of Section -VI-4.0 of NIT.

PC150/E/4003/SECVI-3.0 3 of 10 1.2 (f) FGD (Flue Gas Desulphurization Unit) & De-NOx unit for SOx& NOx removal (if required) along with necessary unloading and Pumping & Handling facilities for ammonia & other chemicals.

PC150/E/4003/ VI-4 10 of 13 3.18 FGD Absorber lining (if required) Haste alloy C-276 or equivalent 55. PC150/E/4003/ VI-4 11 of 13 3.2 Gaseous Emission

Boiler Stack-Hg (mg/Nm3)-0.03 Boiler combustion process does not produce any mercury in the flue gas, as per fuel analysis (Section-VI(2.0) ) there is no mercury content in the fuel the required guarantee of 0.03 mg/Nm3 is achievable. TFL/ PDIL to confirm that there is no mercury content in the fuel.

Mercury (HG) content is 0.167 mg/kg of ROM Coal (feedstoke) Amendment shall be issued.


Gaseous Emission Hg (mg/Nm3): 0.03 Mercury content in the inlet fuel (Coal) is required.

Mercury (HG) content is 0.167 mg/kg of ROM Coal (feedstoke) Amendment shall be issued.

57. SECTION: VI - 4.0 Sheet 12 of 13

4.0 SITE CONDITIONS

Ambient temperature & relative humidity for Performance Gaurantee. Pls intimate the performance ambient temperature & relative

Refer Clause No. 4.0 of Section VI - 4.0 for site conditions. Average ambient temperature is 31.9


Sl. No.


Page 8 of 42

321/2464 humidity. Also the site altitude above mean sea level.

deg C is to be considered for PGTR. Any variation can be compensated by correction factor mutually agreed.

58. PC150/E/4003/ VI-4 12 of 13 4.2 Air Temperature Dry bulb (Summer) 46.3 Dry bulb (Winter) 1.0 Average Temperature 31.9 wet bulb 29.0 Max for Mechanical / Civil / Structural 35.0

TFL/ PDIL to provide the ambient temperature to be considered for PG test for Boiler efficiency calculations.

Refer Clause No. 4.0 of Section VI - 4.0 for site conditions. Average ambient temperature is 31.9 deg C is to be considered for PGTR. Any variation can be compensated by correction factor mutually agreed.



Superheating of H.P. Saturated Steam A separate stream of H.P. saturated steam of 74 Mt/hr (at Normal Flow)from Ammonia-Urea Plant shall be superheated in Steam Generation Plant & will meet the parameters of H.P. superheated steam to be exported to the steam header at the B.L. H.P. saturated Steam quantity may vary from 0 to 82 Mt/hr based on AMMONIA-Urea running status. LSTK contractor to design the superheater coil & boiler control accordingly. 3. DESIGN BASIS AND CAPACITY 3.1 Steam Generation Plant There shall be three (3) boilers (2W+1S) of identical capacity for generation of superheated HP steam of 564 Mt/hr which will be exported at B.L. A stream of Saturated HP steam from Ammonia Plant will be superheated in the operating Boilers. Same shall be made available at LSTK’s B.L. by Owner. Each Boiler shall be capable to superheat additional import saturated steam of 41 Mt/hr from Ammonia Plant. Separate fired arrangement for superheating the H.P. saturated steam shall not be considered. Net output of H.P. superheated steam shall be supplied through a single header at LSTK Contractor’s B.L.

We understand that the total steam requirement (@110kg/cm2(g), 525degC) is 564 TPH, So the individual boiler capacity is 564/2= 282TPH. There would be three boilers of 282TPH with 2w+1s configuration. Regarding the superheating requirement of 74 tph (designed for 82 TPH, with a range of 0-82TPH steam variation), we also understand that this requirement is in addition to theabove 564 TPH, Hence the boiler shall deliver- 282+41TPH =323TPH per boiler with same SOT & SOP. Hence the steam outlet requirement is single. Kindly confirm if our understanding is correct.

For Boiler capacity, Bidder to refer the clause no. 3.1 of Section-VI-4.0


2.0 Requirement Pertaining to Steam Generation Plant

564+ 82 or 74TPH, pls re-confirm.We have considered the boiler capacity as 282+41=323TPH

For Boiler capacity, Bidder to refer the clause no. 3.1 of Section-VI-4.0

61. VI-4.0 Process Design basis

3 of 13 2.0 Superheating of H.P. Saturated Steam A separate stream of H.P. saturated steam of 74 Mt/hr (at Normal Flow)from Ammonia-Urea Plant shall be superheated in Steam Generation Plant & will meet the parameters of H.P. superheated steam to be exported to the steam header at the B.L. H.P. saturated Steam quantity may vary from 0 to 82 Mt/hr based on AMMONIA-Urea running status. LSTK contractor to design the superheater coil & boiler control accordingly.

Bidder presume that the HP saturated steam is not being recived from the proposed 2 nos 282 TPH Boilers and the steam source is from some other boilers since the operating pressure of proposed boiler and pressure of Staurated steam at battery limit is different. TFL/PDIL to confirm.

H.P. Saturated steam source is clearly mentioned in the NIT. Bidder to follow the same.

62. PC150/E/4003/ VI-4.0 4 of 13 Note-2 Note-2:- A stream of LP steam of 10 MT/hr shall be made available by LSTK Contractor at their B.L. for owner use. The specification of steam has been mention in section 2.0 Part-II Technical.

TFL/PDIL to clarify whether the 10 MT/hr specified in this clause is included in the 564 TPH specified or this 10 Mt/hr is in addition to 564 TPH.

10 MT/hr of LP steam is in addition to the 564 TPH

63. PC150/E/4003/Sec VI - 4.0 11 of 13 3.2.0 Gaseous Emission suspended particulate matter - <30 mg/nm3

There is a contridiction in the emission levels of particulate

<30mg/Nm3 shall be considered. Amendment to NIT shall be issued.


Sl. No.


Page 9 of 42

The dust content in the exhaust air shall not exceed more than 50 mg/nm3

matter. We shall follow suspended particulate matter emission level as <30 mg/nm3. kindly confirm

64. PC150/E/4003/SecVI-4.0 9 of 13 3.16 LSTK Contractor to note that Max. Power for SGP Package shall not exceed 8MWhr/Hr.

The maximum power consumption of 8 MW/hr for steam generation unit ( 2 Working) and the auxilaries ( flue gas treatment , fuel handling system, ash handling system .. ) is on lower side. Kindly review and increase auxiliary load.

Total available power for the Steam Generation Plant is 8 MW. Bidder to design their system accordingly.

65. PC150/E/4003/SecVI-4.0 4 of 13 3.1 A stream of LP steam of 10 MT/hr shall be made available by LSTK Contractor at their B.L. for owner use.

Please clarify the requirement of LP steam. We presume it is a interminentrequirment and during the LP steam requirement, the net output of 282 TPH shall reduce accordingly. Kindly confirm

10 MT/hr of LP steam is in addition to the 564 TPH

66. PC150/E/4003/SecVI-4.0 10 of 13 3 LSTK Contractor shall design the ISBL plants such that most of the effluents are recycled back, resulting in zero effluent discharge

We shall consider only oil water seperator in our scope of supply. All other liquid effluents generated like Boiler Blow Down, Ash handling water, Oily water etc also will be treated in the client ETP system.kindly confirm

Confirmed.

67. PC150/E/4003/SECVI.-4.0 Sht-03 of 13

Clause 2.0 & 3.0 HP saturated steam Quantity to be superheated In Steam Generation Plant

As per Clause 2.0 of PC150/E/4003/SECVI.-4.0 Sht-03 of 13 H.P. saturated steam of 74 Mt/hr (at Normal Flow) from Ammonia-Urea Plant shall be superheated in Steam Generation Plant. However, as per clause 3.0 of PC150/E/4003/SECVI.-4.0 sheet-03.13 it is mentioned that Each Boiler shall be capable to superheat additional import saturated steam of 41 Mt/hr from Ammonia Plant. Final HP saturated steam Quantity to be superheated to be informed.

Total HP saturated steam is 74 MT/hr, however this quantity shall be bifurcated within two boilers that is 37 MT/hr. 41 MT/hr/ Boiler shall be considered by LSTK Contractor for designing of superheating coil.

68. VI -4.0 VI -4.0 VI -4.0 VI-5.3.7

7 of 13 7 of 13 8 of 13 6 of 42

3.4 3.5 3.6 2.4.24

ID & FD Fan :ID& FD Fan for each boiler shall have the configuration of 1W+1S. Capacity of each fan shall be 120% of normal conditions. Primary Air Fan (1W+1S) (In Case of CFBC type Boiler) Secondary Air Fan (1W+1S)( (In case of CFBC type Boiler) 2.4.24.1 2x60% Primary air fan… 2.4.24.2 2x60% Secondary air fan… 2.4.24.3 2x60% Induced draft fans… 2.4.24.4 2X100% capacity sealpot blowers (1W+1S)

Each fan shall be designed to cater to 60% BMCR flow requirement as per cl.2.4.24 and both fans of PA/FD/ID will be in operation for all load conditions. Kindly confirm.

for ID & FD fan, cl 3.4 (process design basis Section VI-4.0) shall govern. However, Cl. 2.4.24.4 2X100% capacity sealpot blowers (1W+1S), shall remain stands, if required. Amendment will be issued.

69. VI -4.0 10 of 13 3.18 Plant Equipment Metallurgy 3 – Superheating coils – 2.25Cr-1Mo or superior

Bidder proposes to use 1 ¼ Cr- ½ Mo (T11/T12) and/or superior materials for superheating coils. This is inline with bidder’s standard practice and previous contract experience.

As per NIT

70. VI -4.0

12 of 13 4.2 & 4.3 Air temperature and Relative humidity Owner may kindly furnish Air temperature and relative humidity

Refer Clause No. 4.0 of Section VI - 4.0 for site conditions. Average ambient temperature is 31.9


Sl. No.


Page 10 of 42

to be used for guarantee purpose. Also, Relative humidity for Boiler design has been indicated as 100%. Kindly confirm the same.

deg C is to be considered for PGTR. Any variation can be compensated by correction factor mutually agreed. Confirmed

71. VI -4.0 13 of 13 4.7 Plant Elevation: The final plant elevation shall be established in consultation with owner / consultant based on overall project requirement.

Owner may kindly furnish site elevation for design and selection of equipment and auxiliaries.

Refer General Land Development Plan attached.

72. VI-4.0 VI-5.3.4 VI-5.3.4 VI-5.3.7

8 of 13 22 of 30 22 of 30 6 of 42

3.9 6.3.1 6.3.2 2.4.24

Electrostatic Precipitator - CFBC Steam generator: Dust inlet concentration- Based on flue gas ash to be obtained from Coal containing 43.5% of ash. There shall be one bed ash storage silo for all boilers. The silo shall be sized to store bed ash generated in a day from the proposed unit based on firing of worst coal at BMCR condition. The silo shall be sized to store fly ash generated in a day from the unit based on firing of worst coal at BMCR condition. 2.4.24.1 2x60% Primary air fan, control mechanism and suction hood and silencer. 2.4.24.2 2x60% Secondary air fan, control mechanism and suction hood and silencer………….

Owner to provide complete fuel analysis for worst coal* to be consider for emission control (Fly ash, Nox and Sox) system and auxiliary system design. *- proximate and ultimate, similar to design coal analysis (Sec. VI-2.0, Table-1.0, Sheet 3 of 7) provided for guarantee purpose.

Please refer Annexure-1 of Section-VI-2.0 of NIT for worst coal quality. Confirmed. The silo shall be sized to store fly ash generated in a day from the boilers (working) based on firing of worst coal at BMCR condition. Further, Additional storage provision for 10 Mt/hr fly ash (From Coal Gasification Plant) is to be kept also. Primary & Secondary Air fan shall be as per Section-VI-4.0.

73. PC150/E/4003/ VI.-5.1 6 of 8 5.0 HYDRAULIC RETENTION TIME Steam drum (LHH – empty) Min 10 minutes

Inline with Sec-VI,5.3.7 clause no-20.1 minimum storage of 1 min is considered between Normal level and permitted low low level.

Steam drum hydraulic retention time 10 minutes (High High Level to Empty) is correct. Bidder to consider this.

74. SECTION: VI –5.1 Sheet 6 of 8 328/2464

5.0 HYDRAULIC RETENTION TIME

Retention time:

Kindly reverify, wish to discuss. Steam drum hydraulic retention time 10 minutes (High High Level to Empty) is correct. Bidder to consider this.

75. Scope of DCS Please clarify the scope of the DCS Already defined in tender. 76. Requirement of ESD Please confirm whether ESD is part

of DCS or a separate system There is common DCS for all the boilers and 3 separate BMS PLC for each boiler.

77. PC 150 / E / 4003 / SEC VI-5.2 SHEET 11 OF 149

2.2.4 Contractor shall also be responsible for interconnecting instrument earth pits with unit earth pits (provided by electrical).

We will consider dedicated - 2 nos of electronic earth for the C&I systems. Separate Electrical earth will be considered without any inter connection between these two earthing lines.

Electrical and Instrument Earthing system should be separate. Minimum 2 nos. Of earth pits of each type (total 8 nos) shall be constructed. There shall be minimum 4 separate earthing type for instrumentation i.e. System, Panel /power Intrinsic safe signals and non-Intrinsically safe with different cable colour codes.

78. Tendernotice_1 -INSTRUMENTATION (PC150/E/4003/SecVI-5.2)


2.3.1 Supply of all items related to instrumentation and control systems shall be as indicated on the Piping & Instrumentation diagrams (P&ID)

Bidder did not find P&ID in the tender documents. Kindly share the same.

P& ID development is in bidder scope. Please refer Section-VI-9.0.

79. Tendernotice_1 - 13 of 149 2.3.2 (f) Including communication between CCR,CR and main fire control station Bidder understand that there is only Bidder standing is correct. There shall be single


Sl. No.


Page 11 of 42

INSTRUMENTATION (PC150/E/4003/SecVI-5.2)

(343 of 2464 of overall spec)

one common control room i.e. CCR for all 3 boilers. Kindly clarify what is CR?

control room (bidder’s scope) for SGP. However, there is another control room (not in bidder scope) for ammonia ,urea .Also main fire control station is there but not in bidders scope but repeater panel shall be provided in main fire control room . Communication between SGP control room , urea ammonia control room and main fire control station shall be as per Tender requirement. All the control room furniture shall be of Godrej make. The distance between SGP plant and Urea/Ammonia control room is approx. 1 km. Distance between SGP plant and main fire control station is approx 1.5 kms.



2.3.3 (e) Phosphate analyser shall also be provided. Location can be decided during detail engg.

Kindly clarify how many phosphate analysers to be provided?

Bidder to propose the no. & location of phosphate analyser based on their past experience. The same shall be reviewed and approved by PDIL/TFL.


2.3 Supply of DCS & PLC package, which includes Subsystem like HART Maintenance system, AIMS, IAMS, CCTV, Telecom Network and Documentation server etc as per the architecture.

We have not considered any separate HART maintenance system , AIMS,IAMS and documentation server.



2.3.3 b) All control and monitoring of entire plant such as burners, turbines, effluent treatment plant, cooling tower, DM waterstorage tank, BFW feed pump, Deaerator etc. pertaining to SGP shall be implemented in DCS. The DCS shall be DMR system q) Cable entry at the bottom of panels shall be also through cable glands or MCT blocks.

b) Cables shall be as per our scope of supply packages q) Cable entry at the bottom of the panels shall be through Glands with Gland plates

Noted.

83. PC 150 / E / 4003 / SEC VI-5.2 dd)Control System for Steam Turbine TG control system is not in our scope of work

Noted. However, if any turbine driven equipment i.e. Pump, compressor etc. is supplied . The control of the same shall be in bidder scope.


2.5 Control system/PLC for Coal handling/Material handling/ DM water (Bidder’s scope if applicable) / Condensate polishing unit (Bidder’s scope if applicable) shall be DMR non-SIL. Instruments shall be as follows (as applicable):

As per tender - SHEET 34 OF 149 - d) Coal Handling plant, Ash handling plant, CW / ACW system etc. (These will be through Remote Terminal Units). We will follow the same

Any package PLC envisaged for Coal Handling, Ash Handling and CW/ACW shall be housed in Control room.


2.5 Certification for installation in hazardous areas in accordance with IEC 60079 series is shown below

Since the complete packages shall be in non-hazardous , all the field Transmitters and Switches shall be IP 65 with SS canopy. No any FRP canopy shall be used.

Irrespective of area classification, All field Instruments shall be Zone-1 Gr.IIC T6 with IP-65 as min. with SS canopy.


2.5 There shall be minimum 4 separate earth pits for System, Panel /power and Intrinsic safe signals with different cable colourcodes. All earth shall be less than 2 Ohm or OEM specific, if better. The size of Earthing Cable shall be 50 sq.mm minimumand should be routed in proper HDPE conduit, outside the control room building.

We will consider dedicated - 2 nos of electronic earth for the C&I systems with 16 Sqmm copper cable with HDPE conduits

Electrical and Instrument Earthing system should be separate. Minimum 2 nos. Of earth pits of each type (total 8 nos) shall be constructed. There shall be minimum 4 separate earthing type for instrumentation i.e. System, Panel /power Intrinsic safe signals and non-Intrinsically safe with different cable colour codes.


2.5 Two separate AC distribution board (Dual ACDB) fed from parallel redundant UPS are essential

We will consider a common ACDB for the parallel redundnat (2x100%) UPS.



Sl. No.


Page 12 of 42


2.5 The unit shall install online Continuous Stack Emission Monitoring Systems (CSEMS) at all the stacks of the plant for online realtime monitoring for PM, SO2 and Flouride as minimum and data transmission through GPRS system to SPCB RTDAS server and alsoupload data for use by CPCB.

We will consider CEMS with SOx, Nox, CO, CO2, SPM, O2, Unburned Hydrocarbon. No any gas detectors will be considered. CEMS shall have RS 485 communication port facility. No any GPRS will be considered. However please speecify the appoximate length between CEMS location to SPCB RTDAS sever location for communication purpose.

Bidder to comply Tender requirement and satisfy the latest CPCB and SPCB guidlines w.r.t CEMs.

89. PC 150 / E / 4003 / SEC VI-5.2 Bidder shall supply required hardware and software for connecting these analyzer to the CPCB/State PCB portal with min. 20% sparepoints for future use. Analyzer shall have RS485/ Ethernet / Modbus connectivity

We will consider necessary harware and software (patch software) for the CEMS within our plant battery limit . However further connection and communication shall be by purchaser. Else ,Please provide the approximate distance for CPCB portal from CEMS panel and type of commincation at CPCB end .




1 DCS& ESD system as per attached DCS / PLC Architecture is to be used by the LSTK Contractor

Bidder did not find Architecture in the tender documents. Kindly share the same.

Bidder to prepare and submit DCS/PLC architecture in line with tender requirement. The same shall be reviewed and approved by PDIL/TFL.



4 All Analysers, GCs, Mass-Spectrometer shall be Ex. proof irrespective area of installation.

Ex proof analysers shall be considered based on market availability. Bidder understand that GC and Mass-sprectormeter is not envisaged for this job. Please clarify

Bidder to submit P& ID and the instrumentation used. The same shall be reviewed and approved by PDIL/TFL.

92. Tendernotice_1 -INSTRUMENTATION (PC150/E/4003/SecVI-5.2 )


12 Temp transmitter shall be used for both open loops & Closed loops. Temp transmitters are not envisaged for applications where only monitoring / alarm is required in line with referred clause. kindly confirm

Not acceptable. Tender conditions prevails.


Minimum 04 Nos. of hand held communicator (HHT) shall be provided. This shall be loaded with latest HART Software

We will consider one no of hand held communicator (HHT)



1.1 Type of Control and Monitoring

Note 4: DCS shall be a DMR system as minimum; all closed & Critical loops shall be connected to redundant I/O channels

DCS will be supplied for the entire Steam generation packges and its auxiliaries with redundacy in controller, power supply, commincation levels. No any redundancy in module level except BMS PLC (DMR)

In case of DCS, Redundancy shall be provided for all closed /critical loops I/Os also. The BMS PLC shall be SIL-3 certified TMR/QMR as per Tender requirement.

95. Tendernotice_1 -INSTRUMENTATION (PC150/E/4003/SecVI-5.2


1.2 Interlock and shutdown in ESD PLC Kindly clarify the following: a) Whether one common ESD PLC considered for this tender or dedicated ESD PLC i.e. total 3 Nos.is required? B) Whether ESD PLC is Sil-3 PLC?

There shall be independent BMS system for each boiler units, The BMS PLC shall be SIL-3 certified TMR/QMR. All control and monitoring of entire plant such as burners, turbines, etc. pertaining to SGP shall be implemented in DCS. The DCS shall be DMR system as per sheet no. 30 of 149 (360 of 2464 of overall specification), independent boiler, dedicated unitwise, TMR/QMR PLC to be considered.


Sl. No.


Page 13 of 42


3 Master / Slave clock system shall be supplied by bidder for time synchronization of DCS and microprocessor based system / PLC

We will consider appromately 10 Slave clock and one master clock

Noted. The master clock shall be synchronised with master clock of other units i.e Urea & ammonia, coal gasification etc.


3.2 All servers, Engineering stations etc shall be in RAID 5 configuration all other (OS/PC) shall be in Raid -1 configuration with min 2TB HDD, 16 GB RAM, with latest windows & anti-virus support at least for 5 years For Client Server Architecture 1:1 Server Shall be redundant (RAID 5)

4 Nos Operator Stations (RAID 1) with, 24" screen colour LED type dual monitors & 1 No. Engineering Station (RAID 5) with, 24" screen colour LED type dual monitors for the DCS for Boilers & 2 Nos Operator Stations with, 24" screen colour LED type dual monitors & 1 No. Engineering Station with, 24" screen colour LED type dual monitors for the each BMS PLC for Boiler package One OPC sever machine with software Historian and Alarm management systema are part of Operator station. 1 Firewall. One 55" monitorin scope for CCTV (supplied by others) No any system will be considered.




6.11 Ambient air monitoring system (check) Is it in Bidder's scope or not? Not in bidder scope as per tender.



3.3.1 SIL3 certified PLC shall be used for Plant safety interlocks & ESD system, BMS PLC can be used for implementing ESD functions.

kindly clarify whether for ESD functions BMS PLC (SIL-3) can be used or not?

BMS and ESD shall be in single PLC for each boiler as per SIL-3, TMR/QMR with 250 m sec scan time.

100. PC150/E/4003/ Section-VI-5.2

400 of 2464

3.3.6.1.7 Cable tray and trays

Perforated aluminium tray shall be used for cable routing between junction boxes & control room and shall be routed in the topmost tier of pipe rack

Bidder proposes GI cable trays (ladder type for power and control and perforated type for instrumentation cable) instead of Aluminium cable trays. These trays are having better strength, ruggedness, easy availability and are field proven in all the power plant utilities. The aluminium trays , are less common and can thus cause availability issues during the plant life cycle Purchaser may review and confirm




3.3.6.1.7 (h) Only 12 pair multi-cables shall be used for signal, Restricting the cable size to “only 12P” may result into lot of under-utilization of cable which inturn increase the cost, issues related to bunching of unused pairs in DCS panels, limitations on gland plate size vs. no of cable into panel, Height of false flooring, unnecessary loading of cable ducts/ trays/ structures, C&I maintenance issues etc. Hence it is suggested to allow the rationalized sizes atleast

Tender condition prevails.


Sl. No.


Page 14 of 42

12P & 6P for optimal utilization. 102. PC150/E/4003

/SecVI-5.2 81 of 149 4.2.1.3 Skin thermocouples shall generally be RETRACTO type of

Geyesco design with material as per API unless specified otherwise in the licensor specification/Job specification.

As per bidder’s standard practice, skin thermocouple of fixed K-type will be envisaged meeting the boiler design. Kindly confirm.

Tender requirement prevails

103. PC150/E/4003 /SecVI-5.2

85 of 149 4.2.1.4.1 4.2.1.4.5

Hydra step level transmitter shall be provided in addition to this one extra GWR type level transmitter suitable for boiler application shall be provided in all steam drums. Hydra step or conductivity type measurement shall be provided for steam drum applications in addition to DP type level measurement and all other instruments, in addition to this one GWR type level transmitter suitable for Boiler application shall be provided in all steam drums/boilers.

As per bidder’s standard practice, hydrastep and DP type level measurement will be envisaged for steam drum level measurement. Guided wave radar type level transmitter is redundant to above measurement and hence not required. Kindly confirm.

Bidder to follow Tender requirement. 3 DPT level measurement for drum level control , and 3 transmitters i.e. hydrastep , guided wave radar and DP type Level (separate from above 3 transmitters ) for tripping application.



4.2.1.4.4 All level gauges for plant shall be magnetic type except for steam drum

There is contradiction in referred clauses. Bidder understand that level gauge type (Reflex, transparent or magnetic) shall be selected based on process requirement. Kindly clarify

Kindly note that all level gauges for plant shall be magnetic type except for steam drum.

105. Doc. No. PC150/E/4003/SecVI-5.2 INSTRUMENTATION

Sheet 101 of 149 Page 431 of 2464

4.2.1.7 Pressure Relief Valves / Safety Valves

11.4 / A.4) The spring material of pressure relief valves shall be as follows unless otherwise necessary because of process conditions.-29ºC to 250ºC : Cadmium/nickel plated carbon steelAbove 250ºC : Tungsten alloy steel

For the temperatures -29ºC to 250ºC, spring material shall be Zinc plated Carbon steel instead Cadmium/nickel plated carbon steel. For the temperatures Above 250ºC, spring material shall be Alloy steel instead of Tungsten alloy steel inline with Clause 3.14, Sheet 4 of 10 in Doc. No. STD-400 STANDARD SPECIFICATION FOR SAFETY RELIEF VALVE


106. Doc. No. PC150/E/4003/SecVI-5.2 INSTRUMENTATION

Sheet 101 of 149 Page 431 of 2464

4.2.1.7 Pressure Relief Valves / Safety Valves

A.11) Pressure relief valves required for liquid service shall have liquid trim with discharge coefficient certified by ASME.

Liquid trim valves shall be provided for liquid service valves and they shall be sized as per Colloborator practise. (Colloborator valves being ASME certified)

Noted.


4.2.2.4 CCTV MONITORING

The CCTV system shall be IP based.The complete hardware and software for PLANT shall be procured by Contractor . Contractor scope shall include: a) Identification of suitable location for mounting cameras in the field. Contractor shall coordinate the locations, with PMC/ owner. b) Installation of cameras and their associated accessories in the field (equipment free issued to con: tractor). This shall include any structure, support or stanchion required for installation and their accessories. c) Cabling (cable shall be free issued to contractor) from respective camera to main control room and termination of cables in the field, as per recommendations by CCTV manufacturer. e) Bidder to provide facility to connect FO cable from central control room CCTV network to steam generation plant network. Supply and laying of these FO cables will be in others scope.

We understand that , we have supply one 55" large screen for the CCTV system and installation of all the CCTV (14 nos) at different locations only. Kindly confirm

The clause (4.2.2.4.2 mainly (b) & (c)) regarding free issue of equipments and cable appeared inadvertently and stand deleted. The complete CCTV system & its supply , erection and installation shall be in bidders scope. All the necessary equipment and its accessories i.e. Cameras, JBs, cables, LVS etc including laying and termination of cables shall be in bidders scope. Supply and laying of these FO cables are also in bidder scope. Redundant FO cable with two separate route shall be laid by bidder.

108. PC150/E/4003/SecVI-5.2 124 of 149 4.2.2.4 CCTV MONITORING Bidder understands that CCTV Monitoring shall be stand alone system and there will not be any interface with customer's system. Kindly confirm

CCTV monitoring shall be stand alone system for SGP. However , Bidder to consider provision of interfacing with another system .Hence the protocol used should be universal.

109. PC 150 / E / 4003 / SEC VI-5.2 SHEET 4.2.2.5 The Telephony system shall also be connected to the public system Please provide the distance The digital trunk line (cable) from the IP-PBX to


Sl. No.


Page 15 of 42

125 OF 149

telephone network (PSTN) through the PABX between PSTN and control room the PSTN (or central telephonesystem) shall not be in the scope of Bidder.

110. PC150/E/4003/SecVI-5.2 125 of 149 4.2.2.5 TELEPHONE EXCHANGE Bidder understands that Telephone exchange shall be stand alone system and there will not be any interface with customer's system. Kindly confirm

Telephone exchange shall be stand alone system for SGP. However, Bidder to consider provision of interfacing with another system .Hence the protocol used should be universal


4.2.2.8 MMS for Turbine and compressor train We will consider vibration probes with 420 mA signal , the same shall be connected Plant DCS for the Boiler feedpumps and FD/ID fans. No any VMS / MMS will be considered in our scope . However Turbine Compressor train package is not our scope. So, the same shall not be consiidered

VMS shall be provided for pumps (1 MW and above). For other equipments OEM recommendation shall be followed. Bidder to consider vibration trasnmitters with4-20 mA connecetd to Plant DCS for other applications.


4.4.1.12 Sch 80 seamless pipe with at least 3000 lb rating fillings should be used as a minimum for impulse piping

We will consider Sch 40 seamless pipe (SS316) with at least 1500 lb rating fillings for impulse piping within our scope battrey limit




4.2.1.4.4 4.2.1.4.5

All level gauges for plant shall be magnetic type except for steam drum

There is contradiction in referred clauses. Bidder understand that level gauge type (Reflex, transparent or magnetic) shall be selected based on process requirement. Kindly clarify

Kindly note that all level gauges for plant shall be magnetic type except for steam drum service.

4.2.1.4.5 Reflex type will be used for clean and colourless liquids, except liquids level interface. Transparent type will be used on acid, caustic, dirty or viscous, coloured liquids and liquid interface.

114. Tendernotice_1 -INSTRUMENTATION WORK (STD-0099)


18 POST WARRANTY MAINTENANCE FOR - Refer document 1071-AMC-01

Bidder did not find PWMC document (1071-AMC-01) in the tender documents. Kindly share the same.

The referred document 1071-AMC-01 appeared inadvertently and stand deleted.

115. Tendernotice_1 -TRAINING REQUIREMENT (STD-9993)


Training for Turbine control system, Analyser, GC, Mass spectrometer Turbine control system is not applicable for this job. Hence training for turbine control system is not envisaged for this job. Kindly clarify whether training for analyser, GC and Mass spectrometer is applicable or not? If yes, then mention for how many man days training is required?

Noted. Analyser training (05 days) is required. Training of mass spec. & GC is required, if its supplied by contractor.

116. General -- -- SWAS Analyser requirements Bidder is considering the following: a) Common RCC room (One room) for complete SWAS system for this job. Common room shall be divided in two parts i.e. AC section and Non-AC section. Wet rack of SWAS shall be placed in Non-AC section and Dry rack of SWAS shall be placed in AC section. b) water analysers shall be hardwired to central DCS.

Noted. Shall be decided during detail engineering.


Sl. No.


Page 16 of 42

Kindly confirm. 117. STD-0098

Sheet 18 of 69 664 of 2464

2.20.2.1 Field bus transmitter and devices

Fieldbus transmitters / devices shall be provided, if specified, in fieldbus loops

There are no fieldbus based loops applicable for bidder design, and also none are specified in tender. Hence Bidder proposes smart transmitters as specified in the tender. Purchaser may review and confirm.

Noted.

118. STD-0098 Sheet 61 of 69

707 of 2464

1.6 Junction boxes

Vendor shall supply junction boxes as per the cable selected, wherever required. These shall be die cast aluminium (LM-6) body …..

Bidder propose Galvanised Junction boxes. These JBs are having better strength, ruggedness, easy availability and are field proven in all the power plant utilities. Purchaser may review and confirm


119. STD-0098

Sheet 46 of 69

Sheet 49 of 69

5.0

6.0

DISTRIBUTED CONTROL SYSTEM: The system shall be microprocessor based having function distribution & database distribution sub-system wise PLC shall be microprocessor based system

Bidder propose ValmetDNAbased control system. This system is manufactured by BHEL at Electronics Division, Bangalore under collaboration with Valmet Automation, Finland. This is well proven system, supplied in various power plants and implemented as part of OEM proprietary standard. It is a proven system being supplied in power plants up to 800 MW. Please confirm acceptance.

Not acceptable. Tender Condition prevails

120. STD-0098

Section-VI - 10.0

Sheet 42 of 69

4.13.3.1.1

6.0

Machine Monitoring system shall be by Bentley Nevada 3500 or equivalent. Bentley Nevada 3500 Series Vibration Monitoring System Spares

Bidder proposes ValmetDNA based Vibration Monitoring system meeting specification requirement. The same is well established for various application including power plant up to 800MW & process plant. Equivalent spare for the system shall be supplied. Please confirm.

ValmetDNA not acceptable. VMS shall be provided for pumps (1 MW and above). For other equipments OEM recommendation shall be followed. Bidder to consider vibration trasnmitters with4-20 mA connected to Plant DCS for other applications.

121. STD-0098 STD-0098

Sheet 42 of 69 Sheet 42 of 69

4.13.3.1.2 4.13.3.1.7

For MMS, display shall be provided in Local Control Panel. Alternately, purged enclosure is also acceptable with necessary certification Bidder shall also supply on common laptop based configuration unit for package unit with required configuration software and hardware for configuration of MMS system including serial communication cable required between configuration unit (laptop) & MMS monitor.

Please clarify whether the local display unit is required near each machine in the field or the same can be provided in centralized location. It may be noted that if local display unit is required near each machine in the field, dedicated vibration monitoring racks also need to be provided along with display unit in the field. Bidder proposes centralized display unit suitably located for all the applicable machines where MMS is required. This is a better technical solution from operation & maintenance point of view. Bidder proposes to source configuration laptop for Anti-surge control system, Turbine Speed governor control system and MMS

Local display/local control panel not required for VMS/MMS.


Sl. No.


Page 17 of 42

system, etc. from respective OEMs. Pl. confirm your acceptance.

122. STD-0098

Sheet 41 of 69

4.13 4.13.1 4.13.2

Compressor Instrumentation: Compressor vendor shall be completely responsible for providing adequate instrumentation for safe and efficient operation of machine. Anti surge& Performance control system (ASC)

Bidder understand that Antisurge and performance controller shall be part of Compressor control system. No separate standalone equipment will be required. Please confirm. In case of requirement of separate standalone system, customer to provide list of suggested or approved vendors.

As per Tender requirement, all compressor instrumentation, if any shall be provided by compressor vendor for safe and efficient operation of machine including anti surge & performance control system.

123. STD-0098 Section-VI - 10.0

Sheet 44 of 69

4.13.4 5.0

Speed Governor System: Digital microprocessor based fault tolerant triple modular redundant governing system of mounted in standalone cabinated& located in rack room. Governor control system shall be woodward or equivalent. Spare Parts: Special control system modules a) WoodWard Digital Governor, b) WoodWard PROTECH 2oo3/Braun Speed Trip unit, Speed Probes c) Any other Control system module associated with Speed trip and Monitoring system. d) Voith Make E/H Converters.

Bidder proposes ValmetDNA based turbine governor control (TMR based) meeting specification requirement. The same is well established for various application including power plant up to 800MW & process plant. Similarly, spares equivalent for the system shall be supplied. Please confirm.

Not acceptable. It shall be as per Tender requirement.

124. VI-STD 0120 4 of 13 3.01 Motorised Actuator We have considered Motorised actuators shall be integral starter type. Kindly confirm.

Confirmed.

125. STD-0120 5 of 13 3.01 3.02.03 3.02.11

The motor shall be conforming to Ex"d", Gas group IIC, T3. The motor enclosure shall be flame proof as per specification. Actuator shall be flame proof confirming to Exd IIC T3 as per IEC with environmental protection of IP65 or better.

Electrical actuator selection shall be as per process requirement and area of classification during detailed engineering. Kindly confirm.

Tender requirement prevails.

126. FORM No.: 02-0000-0021F2 REV1- STD-0120 Standard Specification for Motorized Actuators

4 of 13 3.02.012 (f) Incoming power supply isolation switch Power supply isolation shall not be part of actautor and to be controlled through MCC

Noted, separate isolation switch not required.


6 of 13 3.03.01 Limit switches shall be weatherproof IP-65 or better. Limit Switches shall be supplied for valve open and close position suitable for low current intrinsically safe application (gold plated contacts of 24V DC 1A rating)

Regarding limit switch contact material, it will be as per Actuator vendor standrad practice.

Tender Condition prevails. Limit Switch and torque switch should be the integral part of the actuators.


5 of 13 3.02.13 The actuator shall include a digital position indicator Analog position indicator will be provided as per actuator vendor standard



6 of 13 3.04 Fugitive emission Considerations Wherever gases medium is envisaged, this requirement will be met. For water, steam, air and oil application, Fugitive emission requirement is not considered.

Noted.

130. FORM No.: 02-0000-0021F2 7 of 13 4.02.2 (f) Fire safe testing as per API 6FA It is mentioned as Routine test. We Noted.


Sl. No.


Page 18 of 42

REV1- STD-0120 Standard Specification for Motorized Actuators

would like to clarify that fire safe testing is a type test for the specific size of the valve. This requritrement is considered based on the specific system requirement only and not for all the valves in the plant.

131. FORM No.: 02-0000-0021F3 REV5-PC150/E/4003- Vendor List

61 of 88 7.0 instrumentation Electrical Actuators- Vendor List Kindly include Rotork-India, Auma-India and Germany, Limitork-India and Antrieb-India

Please follow vendor list attached with tender.

132. Doc. No. STD-400 STANDARD SPECIFICATION FOR SAFETY RELIEF VALVE

SHEET 4 OF 10 Page 1041 of 2464

3.00 Sizing and Design Criteria

The spring material of pressure relief valves shall be as follows unless otherwise necessary because of process conditions. -29ºC to 250ºC : Cadmium/nickel plated carbon steel Above 250ºC : Tungsten alloy steel

For the temperatures -29ºC to 250ºC, spring material shall be Zinc plated Carbon steel instead Cadmium/nickel plated carbon steel. For the temperatures Above 250ºC, spring material shall be Alloy steel instead of Tungsten alloy steel inline with Clause 3.14, Sheet 4 of 10 in Doc. No. STD-400 STANDARD SPECIFICATION FOR SAFETY RELIEF VALVE




3.00 Sizing and Design Criteria

Pressure relief valves required for liquid service shall have liquid trim with discharge coefficient certified by ASME.

Liquid trim valves shall be provided for liquid service valves and they shall be sized as per Colloborator practise. (Colloborator valves being ASME certified)

Noted.



Clause 3.14 Springs shall be carbon steel cadmium plated (rust proof) for normal process operating temperature (-) 25°C to 200°C

For the temperatures -25ºC to 200ºC, spring material shall be Zinc plated Carbon steel instead Cadmium plated carbon steel.


135. SECTION VI – 5.3.1 DESIGN PHILOSOPHY – PIPING

Sheet 10 of 75 1151/2464

5.2.3.4 Re-boiler 5.2.3.4 Re-boiler Re-boiler shall be located next to the tower they serve except fired heater type. The elevation of re-boiler shall be as given in the P & ID’s. Horizontal thermo siphon types are usually supported by the tower and are located on the back side to be accessible for maintenance. Large vertical types may require a supporting structure which cannot be supported from the tower/column. Re-boiler piping shall be checked for pressure drop before finalization.

Can you please ellaboarte this requirement.

This is a general piping philosophy not applicable for this package.

136. PC150/E/4003/SecVI-5.3.1 19 of 75 5.3.10.3 Return exhaust steam / condensate lines shall connect to the top of the exhaust steam Condensate header.

a. Please provide the return condensate parameters : 1. Qty of return condensate : ______ TPH 2. Temperature of return condensate : ____deg.c b. Please clarify the battery limit for the return condensate. Condensate storage tank and pumping system is required or not ? C. Specify the location of the return condensate header.

No condensate receive/ discharge at Bidder's battery limit is considered. DM water at 40 deg Celsius shall be made available at Battery limit of Steam Generation Plant. Steam Generation Plant shall be designed accordingly only. Amendment will be issued.

137. DESIGN PHILOSOPHY PIPING PC150/E/4003/Section -VI-

34 of 75 7.1.1 Chloride content – 20 ppm (max) Thermal Conductivity: 0.43mW/Cm˚C for mean temp 50°C 0.52mW/ Cm˚Cfor mean temp 100°C 0.62mW/ Cm˚Cfor mean temp 150°C

For temperatures upto 4000C –LRB mattress of density 100 Kg/m3 will be used for which Thermal

As per NIT.


Sl. No.


Page 19 of 42

5.3.1 0.68mW/ cm˚Cfor mean temp 200°C 0.80mW/ cm˚Cfor mean temp 250°C 0.90mW/ cm˚Cfor mean temp 300°C

conductivity values will be as per Group III of IS 8183 For temperatures above 4000C –LRB mattress of density 150 Kg/m3 will be used for which Thermal conductivity values will be as per Group IV of IS 8183

138. DESIGN PHILOSOPHY PIPING PC150/E/4003/Section -VI-5.3.1

36 of 75 7.3.2 For securing fibrous insulation on piping, 24 SWG X 12 wide, aluminium bands shall be used. For securing fibrous insulation on equipments, 24 SWG X 20 wide aluminium bands shall be used. For securing fibrous material on vertical storage tank, galvanized steel 40 mm wide X 3 mm thick flat shall be used. For securing fibrous material on spheres, stainless steel bands of 25 mm wide X 0.8 mm thick shall be used. For securing Rigid Insulation on pip up to 16" O.D., annealed galvanized steel wire of 16 SWG shall be used. Galvanizing coating shall have 450g/m2 of surface area. For securing rigid insulation on pipe 18" O.D., and above, galvanized steel band 20 mm wide X 24 SWG shall be used. Galvanizing shall be 600 g/m2 of surface area. For securing rigid insulation on vertical and horizontal vessels, galvanized steel band 20mm wide X 24 SWG shall be used. Galvanizing shall be 450g/m2 of surface area.

Binding wire (GI) 18 SWG (1.2mm thickness) and retainers will be used for securing wool mattress in place.

As per NIT.

139. DESIGN PHILOSOPHY PIPING PC150/E/4003/Section -VI-5.3.1

36 of 75 7.3.3 For securing cladding on insulation on piping, aluminium band 12mm (min) X 24 SWG thick shall be used. For securing cladding on insulation on equipment, aluminium band 20mm wide X 24 SWG shall be used. For securing cladding on insulation for vertical storage tanks stainless steel band 25mm wide X 24 SWG shall be used.

Casing support, self tapping screws will be used for securing cladding over insulation. Based on BHEL design, no aluminium band is required for purpose of securing Al cladding sheets.

As per NIT.

140. PC150/E/4003/ VI.-5.3.2 25 of 46 3.1 For vessels, the minimum thickness of shell & heads, including corrosion allowance shall be as indicated below: carbon steel-6mm for ID 1200 to 2000

Inline with Sec-VI,5.3.7 clause no-8.1.4 corossion allowance for steam drum is considered as 3mm.

cl 2.1.5 of PC150/E/4003/Section-VI-5.3.2 shall be govern for corrosion allowance for static equipments i.e. as follows: " All Carbon Steel (CS) and Low-Alloy Steel (LAS) pressure parts shall have 3 mm corrosion allowance unless specified otherwise. All internal CS & LAS parts shall have at least 1.5 mm Corrosion Allowance on either side. No corrosion allowance shall be considered for SS. The recommendation of OEM shall be adopted, if found more stringent." further min thicknesses for pressure parts(shell & heads) of static equipments shall be as per cl 3.11 of PC150/E/4003/ VI.-5.3.2. amendment shall be issued.

141. VI 5.3.2 9 of 46 1.8.14 A proposed Welding Procedure Specification (WPS) shall be submitted to Third Partyinspection agency for approval. On approval, a Procedure Qualification Test (PQT) shall beconducted which shall be witnessed by Third Party inspection agency. On acceptance of alltests as per ASME Section IX, a final WPS along with Procedure Qualification Record (PQR) shall be submitted. Production welding shall start only after approval of final WPS/PQR and qualification of welders as per ASME Section IX..

BHEL has very well established welding procedure. All welders used for pressure parts and valves are qualified as per IBR and non-pressure parts as per AWS. Hence, approval of welding procedures and welder's qualifications by customer/TPI is not envisaged.

Not acceptable. Bidder to follow NIT.

142. VI 5.3.2 9 of 46 1.10.5 All CS materials including forging used for pressure parts shall be procured in fully Killed and normalized condition.

All CS materials including forging used for pressure parts shall be procured as per the specification of ASME sec. II-part A.

Bidder to follow NIT considering Minimum requirements.

143. VI 5.3.2 13 of 46 1.10.13 All forgings including nozzle flanges shall be examined for surface defects by MP/PT testingafter machining as per ASTM A 275.

Since the bar stock & bars used for forgings >50mm are UT tested ,MPI after machining is not envisaged.

Bidder to follow NIT.

144. VI 5.3.2 13 of 46 1.10.15 Carbon Content for carbon steel used for fabrication as shown by ladle Material chemical composition will Bidder to follow NIT considering Minimum


Sl. No.


Page 20 of 42

analysis shall be 0.23% for plates, pipes & tubes 0.25% for forging. be as per the specification of ASME sec. II-part A.

requirements

145. VI 5.3.2

14 of 46 1.10.16 In order to minimise the effect of temper embrittlement for material to 2¼ Cr 1 Mospecifications in the temperature range of 375-575oC, the embrittlement factors 'X' & 'J' shallbe limited to: X = (10P + 5Sb + 4Sn + AS) / 100 ≤ 15 The elements above are expressed as ppm J= (Si + Mn) (P + Sn) x 104 <160 The elements above are expressed as percentages A stimulated PWHT followed by step cooling shall be performed on a sample of material. Acceptable toughness shall be demonstrated by means of a Charpy V Impact Test.

Material chemical composition will be as per the specification of ASME sec. II-part A and the tests will be carried out as per IBR.


146. VI-5.3.2

15 of 46 1.10.23 For high pressure equipment’s, in shell & heads, the impurity limit shall be Copper ≤ 0.20% &Nickel ≤ 0.30% for Mo & Cr- Mo low alloy steels while Copper shall be ≤ 0.20% & Vanadium ≤0.15% for carbon steels

Material chemical composition will be as per the specification of ASME sec. II-part A and the tests will be carried out as per IBR.

Bidder to follow NIT considering Minimum requirements

147. VI-5.3.2

18 of 46

2.2.3

The following NDT requirements are mandatory in addition to code /spec requirements: a) UT examination: i) All butt-welds in thickness greater than 50mm as supplement to radiography. ii) FPW of nozzle attachments of thk. above 50mm as supplement to radiography

RT/UT will be done for the butt joints as per the appropriate IBR regulations.


148. PC150/E/4003/SECTION VI 4 of 30 3.1 COAL CRUSHING AND SCREENING

Coal (-) 30mm / fluxant (-) 30mm shall be received through conveyors from Coal Crusher House

We request to please provide material characteristic for Fluxant (i.e Density, Moisture Content, temperature, Etc)

Purity range of fluxant will be 65% and above for design purpose. However, performance guarantee will be based on 65% purity. Amendment will be issued.

149. Design Philosophy- Coal & Ash Handling System

Sheet 04 of 30

3.1 In case of CFBC Boiler, 1 working + 1 standby crusher for coal and 1 working + 1 standby crusher for fluxant shall be considered for Steam Generation Plant.

Please confirm whether bidder can consider 1 working + 1 standby mill for fluxant as required fine generation is much higher and crusher cannot generate the same.

Confirmed.


Sheet 4 of 30

3.1 The size of the coal / fluxant received is normally (-) 30 mm from Coal Crushing House of Coal Gasification Plant which is not in bidder’s scope.

1. Please inform capacity of incoming belt conveyor and crusher at crusher house. 2. Level of discharge point shall be mention from where LSTK vendor scope will be started. 3. Please provide GA drawing of crusher house to understand the arrangement. 4. Type of crusher shall be informed. 5. Particle size distribution to be provided by customer.

1. 1000TPH (Rated)/ 1200 TPH (Design). 2. To be provided during detail Engineering. 3. To be provided during detail Engineering. 4. As per good industry practice. 5.To be provided during detail engineering.

151. PC150/E/4003/SecVI-5.3.4 1285 of 2464 (Sheet 5 of 30)

4 Pent House/ Transfer Point/ Tunnel Kindly forward Technical Specification of Pent House/ Transfer Point, Underground Reclaim Hopper, Tunnel if applicable.

Pent House, Underground Reclaim Hopper, Tunnel shall be of RCC whereas Transfer Tower shall be of Steel.

152. PC150/E/4003/ SECTION VI 6 of 30 4.0 BELT CONVEYORS

6. All belt conveyors shall have suitable gravity take-up unit, except material weigh feeder which have short length and wherever agreed by owner/ consultant

We suggest to provide Gravity take up for long conveyor of length more than 30 mtr, and screw type take up for short conveyor of length less than 30 mtr

As per IS:11592 and latest CEMA. Amendment shall be issued.

153. PC150/E/4003/ SECTION VI 6 of 30 4.0 BELT 16. The skirt boards and sealing with overlapping block design shall be Skirt sealing shall be provided with Confirmed.


Sl. No.


Page 21 of 42

CONVEYORS provided with labyrinth seals rubber, with self locking clamp plate as a sealing arrangement


Sheet 7 of 30

4.0-20 In Double stream conveyors central walk way width shall be minimum 1100mm.

Please mention width of side walkway for double stream conveyor.

750mm. Amendment shall be issued.


Sheet 7 of 30

4.0-22 Return idler shall be with rubber rings or rubber lined. Vertical guide rollers shall also be rubber lagged type

Please mention roll Dia for carrying, return and impact roller and thickness of rubber lining/rings on the same.

As per IS:11592/CEMA/calculation/IS:8598. Amendment shall be issued.


Sheet 7 of 30

4.0-24 All pulleys shall be lagged in herring-bone pattern. Head/Drive pulleys shall be lagged with 12 mm thickness Neoprene and Tail & Snub pulleys shall be lagged with 12 mm thickness Neoprene.

1. Please inform whether tail/snub/bend/take-up pulleys are required with herring-bone pattern with 12mm thickness. As per standard practice 10mm plain lagging is provided for these pulleys. 2. For deflector pulley/roller 10mm thick plain lagging is sufficient. Please confirm.

Confirmed. Amendment shall be issued.


Sheet 7 of 30

4.0-26 For safety of conveyors and personnel, all conveyors shall be provided with safety switches like zero speed switch, belt sway switch and pull cord.

Please mention spacing requirement of all safety switches.

Belt Sway switch( both side @50m) Pull cord Switch ( both side @20m) Zero Speed Switch. Amendment shall be issued.

158. PC150/E/4003/ SECTION VI 7 of 30 4.0 BELT CONVEYORS

22. Return idler shall be with rubber rings or rubber lined. Vertical guide rollers shall also be rubber lagged type

We presume 1 no. of self cleaning idler (with rubber ring) has to be provided on return side, rest all return idler shall be without any rubber ring. Kindly Confirm



Sheet 8 of 30

4.0-28 All Conveyor galleries shall be provided with dust sweeping chutes covered with removalchequered plates.

Please mention spacing of dust sweeping chute along the conveyor. We are recommending @100m distance at 4-legged trestle position. For gallery length shorter than 100m dust sweeping chute will be provided at one end of gallery. Also please mention Dia and thickness of pipe for this chute.

Confirmed. Diameter and Thickness of pipe for chute shall be as per good engineering practice. Amendment shall be issued.


4.6 Crusher House Kindly forward Technical Specification of Crusher House. Also, provide the type of flooring required for the same. Kindly specify as any side cladding is required or not? If yes, kindly indicate the height.

Crusher House shall be as per good engineering practice. Flooring shall be chequered plate/grating. Side cladding is required. Height shall be decided by Bidder.

161. PC150/E/4003/ SecVI- 14 of 30 4.7 (3) Vertical roller mill shall have following features like better utilisation of grinding area, even distribution of load on the table, comparative less dynamic forces on table due to lessermass of single moving part, variable speed mill drives and “hydraulic loading system” for maximum flexibility to vary grinding pressure.

Constant Speed mill drives are envisaged as per proven practice.

As per NIT.

162. PC150/E/4003/SecVI-5.3.4

14 of 30 4.7 (3) High efficiency dynamic classifier shall be used Dynamic classifiers are preferred for ash content in fuel upto 40%, for high ash coal Indian Coal Static Classifier is preferred and recommended. TFL/PDIL to confirm the acceptance of the same.

As per NIT.

163. PC150/E/4003/ SecVI-5.3.4 15 of 30 4.9 The bunkers shall be of round shape and fabricated from Carbon steel plates (min. 10 mm thickness) conforming to IS : 2062 or equivalent / ISO and to lined with Tiscral /Sailhard (Adequate thickness minimum 12

The coal storage bunkers are made of IS2062 with SS304 lining in conical portion of the bunker as per

As per NIT , SS304 lining may also be used. Amendment shall be issued.


Sl. No.


Page 22 of 42

mm) from inside not only on bottom conical portion but also on vertical portion for free flow of material.

proven practice. TFL/PDIL to confirm the acceptance of the same.


Sheet 15 of 30

4.10 Flap Gates MOC of flap gates are required. Please confirm whether bidder can consider same MOC as mentioned for chutes please confirm.



Sheet 16 of 30

4.12 BELT SCALE Belt weigh scale for measurement of coal flow rate and quantity shall be provided at specified locations.

Please specify location and quantity of belt scale

As per system design requirement.


Sheet 17 of 30

4.13 INLINE MAGNETIC SEPARATOR / SUSPENDED MAGNET Please specify location and quantity of INLINE MAGNETIC SEPARATOR / SUSPENDED MAGNET

As per system design requirement.


Coal Handling System Please provide flow diagram which is in scope of LSTK vendor.

Bidder shall prepare and submit in Technical Bid.


Sheet 17 of 30

5.00 Dust control system shall be of dry / wet / extraction type and as well as dust suppression type to suit at the application point.

Please confirm whether bidder can consider either Dust extraction system or Dust suppression system for dust generating points. For limestone water addition is not recommended. Hence dust extraction only is applicable. Please confirm.

As per system requirement.

169. DESIGN PHILOSOPHY – COAL AND ASH HANDLING SYSTEM (Doc. No:PC150/E/4003/SecVI-5.3.4)

SHEET 20 OF 30

6.2 We understand ash transportation directly to Ash/slag pond in slurry form & civil works of Ash pond is not in bidder scope

Fly ash and Bed Ash Disposal System within Fertilser Plant premises upto Bed Ash/Fly Ash Silo alongwith Conveying System shall be in Bidder’s scope. Amendment shall be issued.

170. PC150/E/4003/ SecVI-5.3.4 20 of 30 6.2.1 Bed ash formed due to the combustion of coal in the boiler. After that ash collected in various bed ash cooler outlet, shall be automatically and sequentially extracted. Below each bed ash cooler outlet, adequately sized water-jacketed surge hopper shall be provided to reduce the ash temperature below 200 degree Celsius. Ash collected in the surge hopper shall be conveyed through a dense phase pneumatic conveying system up to bed ash silo for storage and further disposal.

Bidder presume that this clause is applicable for CFBC boilers and bidder presume that it is bidders choice to chose either dry bottom ash handling or water impounded hopper for PC fired boilers

Confirmed.

171. DESIGN PHILOSOPHY – COAL AND ASH HANDLING SYSTEM

SHEET 20 OF 30

6.2.1 Ash collected in the surge hopper shall be conveyed through a dense phase pneumatic conveying system up to bed ash silo for storage and further disposal. Tender drawing no. PC150-4003-0001 Notes 2. Depending on the lean phase/dense phase systems the bidder shall decide capacity and number of air compressor or air blowers required for the system by considering 100% standby requirements.

Bidder understands that the choice of dense phase or lean phase rests upon bidder.

Dense phase system shall be used. Tender drawing no. PC150-4003-0001 Notes 2 to be modified. Amendment shall be issued.


SHEET 26 OF 30

6.10.1 6. Minimum thickness of surge hopper plate - 6 mm thick M.S. to IS: 2062 with 10 mm thick abrasion resistant Alloy C.I. liners of 300-350BHN hardness at sloping surfaces and outlet area.

As the ash handling system is supplier dependent. Bidder requests customer to leave the requirement of liner on supplier.

As per NIT


SHEET 26 OF 30

6.10.1 5. Required storage capacity of ash in hopper - For bed ash Minimum two conveying cycle For cyclone, APH & ECO ash 8 Hrs of maximum ash generation.

Please furnish the no. of cycles for bed ash conveying as the same has been furnished for fly ash.

Bidder to select as per system design requirement.


SHEET 20 OF 30

6.2.1 Ash collected in the surge hopper shall be conveyed through a dense phase pneumatic conveying system up to bed ash silo for storage and further disposal. Tender drawing no. PC150-4003-0001 Notes 2. Depending on the lean

Bidder understands that the choice of dense phase or lean phase rests upon bidder.

Dense phase system shall be used. Tender drawing no. PC150-4003-0001 Notes 2 to be modified. Amendment shall be issued.


Sl. No.


Page 23 of 42

phase/dense phase systems the bidder shall decide capacity and number of air compressor or air blowers required for the system by considering 100% standby requirements.

175. PC150/E/4003/SecVI-5.3.4 22 of 30 6.3.1 Bed Ash storage silo - silos shall be of RCC construction There is a contridiction in the MOC of bed ash silo. We shall consider MS silo for bed ash with 5 mm thick SS 409 M on sloping surface . However 50 mm thkguinting on vertical portion is not required and Hence not considered . Capacity sizing shall be 24 hrs storage of worst coal at BMCR of one boiler. Kindly confirm

50 mm thkguinting on vertical portion to be provided as per NIT

PC150/E/4003/SecVI-5.3.4 29 of 30 6.10.7 Material of construction - MS silo for bed ash Capacity sizing shall be 24 hrs storage of worst coal at BMCR of Two boiler (2W).

176. PC150/E/4003/SecVI-5.3.4 22 of 30 6.3.2 Fly ash storage silo - The silo shall be sized to store fly ash generated in a day from the unit based on firing of worst coal at BMCR condition.

Capacity sizing shall be 24 hrs storage of worst coal at BMCR of one boiler or two boilers ( 2 W). Kindly confirm

Capacity sizing shall be 24 hrs storage of worst coal at BMCR of two boilers ( 2 W)


SHEET 23 OF 30

6.4.1 The rated capacity of the bed ash conveying shall be based on 150 % margin over bed ash generation rate based on worst coal at BMCR condition.

Bidder understands that bed ash will be disposal shall be designed for continuous disposal of 150% of bed ash generated from worst coal at BMCR condition. Please confirm.

Confirmed.


6.10.7 Bed Ash Silo Kindly confirm the Silo used for storing Bed Ash is of Steel.

Confirmed.

179. Civil - - Coal Handling Plant Kindly provide flow diagram of Coal Handling Plant.

Bidder to prepare the same as per System Requirement and submit n Technical Bid.

180. PC150/E/4003/SECTION VI 4 of 30 3.1 LSTK’s contractor scope shall be started from Coal Crusher House of Coal Gasification Plant

We request to please provide GA drawing of crusher house near gasification plant. so as to design our new proposed conveyor accordingly

Same shall be provided during detail engineering

181. Drg . No. PC009-0000-0001 Crusher house near coal gasification plant Same shall be provided during detail engineering

182. Drg . No. PC009-0000-0001 Two no. of Conveyor from crusher house to steam generation plant As per the plan we have considered double stream conveying system (1W+1S). Kindly Confirm

Confirmed.

183. Transfer Tower construction We have considered structural steel tower with chequered plate floor. Kindly Confirm

Confirmed.

184. Dry type Dust extraction system We have considered Dry type dust extraction system for proposed conveyor receipt and discharge point, for coal material only. Kindly Confirm

Confirmed.

185. Elevation drawing We request to please provide elevation drawing for proposed system

Bidder to prepare and submit Eelevation Drawings in the TechncialBid.

186. Flow dig We request to please provide the Flow drawing for proposed system

Bidder to prepare and submit Flow Diagrams in the Techncial Bid.

187. GENERAL - - - Please furnish details of equipment and their duty factors for considering Guarantee power.

Bidder’s query is not clear. Please elaborate.

188. TENDER DRAWING - - Tender drawing no. PC009-0000-0001 1) Please furnish location of bed ash and fly ash silos. 2) Ash/slag pond is shown in the

Bed ash and fly ash silos in Bidder’s scope. Location shall be near Ash/Slag Pond.


Sl. No.


Page 24 of 42

drawing. However, the same is not applicable. Please confirm.

Ash/slag pond is not in Bidder’s scope.

189. GENERAL - - - Please furnish the capacity of Bed Ash & Fly Ash extraction system (Wet Ash through Ash Conditioner & Dry Ash through Telescopic spout)

80/100 TPH (Rated/ design), Given on page no.-29 Clause no.-6.10.8, Point no.-11

190. GENERAL - - - Kindly provide cooling water parameters for bed ash coolers.

Refer Section VI-2.0.

191. TENDER DRAWING - - Tender drawing no. PC009-0000-0001 Denseveyor is a proprietary equipment of one supplier. The air lock vessel with different nomenclature may be supplied depending upon supplier. Please confirm.

Confirmed.

192. GENERAL - - - Service water is in the scope of customer. Please confirm.

Confirmed.

193. GENERAL - - - Please provide the list of buildings for various ash handling equipment.

As, Ash Handling System is in Bidder’s scope, Building for Ash Handling System shall be decided by Bidder.

194. GENERAL - - - 1. Kindly provide the list of start- up (commissioning spares) for ash handling system 2. Kindly provide special tools and tackles for ash handling system

Bidder to decide start- up (commissioning spares) for ash handling system and special tools and tackles for ash handling system

195. Civil - - Lime Stone Handling Plant Kindly confirm whether Lime Stone Handling Plant (LHP) is also in Bidder Scope

Storage inside bidder scope as per NIT.

196. Civil - - Gypsum Handling Plant Kindly confirm whether Gypsum Handling Plant (GHP) is also in Bidder Scope

Gypsum Handling Plant, if required shall be in Bidder’s scope.


FLUXANT, LIMESTONE, BED MATERIAL HANDLING Please inform battery limit and receiving point of limestone, bed material for LSTK vendor. Provide design philosophy of limestone, bed material handling.

For Limestone BL , refer Plot Plan. For bed material, bidder to propose.

198. DESIGN PHILOSOPHY – FIRE FIGHTING (Doc. No:PC150/E/4003/SecVI-5.3.5)

Sheet 9 of 12

7.3 The actuation of clean agent system shall be indicated in the control panel located in the fire station control room & CCR. Preferred clean agents are either Argonite or Inergen only.

Clean agent system shall be for CCR as fire station control room is nor part of bidder scope.

As per NIT

199. VI – 5.3.5 5 of 12

4.1

As per battery limit, following are systems only applicable. Kindly confirm

As per NIT. However, Nitrogen Injection Fire Prevention and Extinguishing System (NIFPES) shall be provided for transformers having oil capacity more than 2000 Ltrs. Fire Extinguisher etc. shall be provided for transformer having oil capacity upto 2000 Ltrs. Amendment shall be issued.

200. PC150/E/4003/SecVI-5.3.5 1316/2464 Sh. 12 of 12

1.3.2.J Noted. Fire alarm panel will be interface with our DCS panel only with Modbus configuration. Kindly confrim

As per NIT.

201. C150/E/4003/SecVI-5.3.5 Sht-03 of 12

-- Fire Hydrant Header Details Drawing/Details of Existing Fire Hydrant ring header around SGP required to prepare internal fire

Tie-in point shall be provided during detailed engineering , however fire header hydrant ring main around Steam Generation Plant shall be in


Sl. No.


Page 25 of 42

hydrant layout. bidder’s scope 202. DESIGN PHILOSOPHY –

HVAC SYSTEM (Doc. No:PC150/E/4003/SecVI-5.3.6)

Sheet 3 OF 22

1.2 Indicative list wherein HVAC system are required : 1. Control room(s) 2. Sub -station(s) 3. Lab Tech Building(s) 4. Field Maintenance office(s) 5. Operator cabins 6. Lift machine rooms 7. Chemical storage shed 8. Feeder panel rooms 9. Other miscellaneous building , if any.

HVAC system shall be considered for following buildimgs 1. Control room(s) 2. Sub -station(s) if any 3. Lab Tech Building(s) 4. Field Maintenance office(s) 5. Operator cabins 6. Lift machine rooms 7. Chemical storage shed 8. Feeder panel rooms 9. Other miscellaneous building , if any.

Shall be as per NIT.

203. DESIGN PHILOSOPHY – HVAC SYSTEM (Doc. No:PC150/E/4003/SecVI-5.3.6)

Rev Sheet 8 OF 22

3.9 Chemical filters shall be designed & selected by bidder for the indoor condition for Control room(s) and Sub-station(s) considering the worst surrounding atmosphere of plant. Chemical filter shall be selected for the chemical media life of minimum 2 years. Outside gas concentration shall be considered while evaluating the life. Chemical filter’s nomographs etc to be submitted by LSTK Contractor in support of the chemical media life. Chemical air filter unit shall be skid mounted cubicle for horizontal installation. Three stage chemical filter shall be provided. Chemical filter shall have adequate provision for easy removal & servicing of filter packs. Bidder to provide differential pressure indication across filters and velocity across the filter shall be in range of 100-110 FPM.

Please provide quality of air / gasesous concentration of outside air in the plant

Bidder to consider chemical filters accroding to coal gasification based Ammonia-urea process industry.

204. VI – 5.3.6 3 of 22 1.2.2 Type of Air conditioning system and Ventilation system are preferably required as under for various above mentioned buildings / facilities : 1. Control rooms: Central AC system with complete auxiliaries with 100% stand-by chillers & AHUs are required with chemical filters.

Air cooled packaged Air conditioning system shall be provided with N+1 configuration.

As per NIT. System to be designed accordingly.

205. VI – 5.3.6 4 of 22 1.2.2 2. Substation Buildings : Central AC system with complete auxiliaries with 100% stand-by chillers & AHUs are required with chemical filters.

Air cooled packaged Air conditioning system shall be provided with N+1 configuration. Split type AC system (N+1) shall be provided if the tonnage is less than 20TR.

As per NIT. System to be designed accordingly.

206. VI – 5.3.6 4 of 22 1.2.2 Lab Tech Building(s): a) Gas analyzer room, Chemical testing room, inst analysis room, chemical storage room in lab building shall have central AC system/ package ACs with 100% stand-by. The treated air shall be distributed by ducts from air handling unit to each room and the return air from laboratory rooms shall not be mixed.

Non ductable split type air conditioning system shall be provided with 100% standby. For lab area, exhaust fan shall be provided additional to operate during testing conditions only.

100 % standby required as per NIT.

207. VI – 5.3.6 4 of 22 1.2.2 Office in lab tech buildings, Field maintenance offices, Lift machine room shall be air-conditioned through portable ACs with stand-by units.

Non ductable split type air conditioning system shall be provided with 100% working capacity, where as Lift machine room shall be provided with 100% standby.

As per NIT.

208. GENERAL - - - 1. Please confirm the type of ventilation system to be used for different equipment housing buildings. 2. Please specify the type of air conditioning for ash handling buildings.

Refer Section VI-5.3.6.


Sl. No.


Page 26 of 42

209. GENERAL - - - Please confirm the type of hoist and cranes to be installed in compressor house, drain sumps, ash conditioner sump, silos for handling equipment.

Bidder to note that EOT cranes /hoist envisaged for 5 Tonnes and above rating shall be double rail mounted type , however below 5 tonnes rating may be mono rail mounted type. Amendment shall be issued.

210. Section-VI- 5.3.7 DESIGN PHILOSOPHY – BOILER

Sheet 25 of 42 1370/2464

23.0 BURNERS 23.5 Low NOx Burners shall be provided. Burners are only for boiler start up. Hence normal Buners will suffice the requirement.

Noted. However, Bidder shall meet the emission norms specified in NIT.

211. PC150/E/4003/ VI.-5.3.7 5 of 42 2.4.7 Piping upto turbine ESV inlet and associated instruments. As per other parts of tender theSteam Generation Plant is the source of steam required for the operation of Coal asificationPlant, Ammonia & Urea Plant, Offsite plants of entire fertilizer complex. And terminal point for bidder is supplying steam at the Battery limit hence requirement of Turbine and its ESV is not cleat TFL/ PDIL to clarify.

This clause is applicable for turbines, if any under bidder's scope.

212. PC150/E/4003/ VI.-5.3.7 5 of 42 2.4.12 One sand silo/bunker system for boiler, including support steel, rotary air lock feeder for flow control, discharge piping system to combustor.

Sand Silo is not applicable for PC fired Boiler system

Noted.

213. DESIGN PHILOSOPHY - BOILER

Sheet 5 of 42

2.4.12 One sand silo/bunker system for boiler, including support steel, rotary air lock feeder for flow control, discharge piping system to combustor.

Please furnish bed ash material and conveying details (i.e., capacity, bulk density, conveying distance, no. of bunkers, bed material screening arrangement, bed material silo capacity etc).

Bidder to provide.

214. DESIGN PHILOSOPHY - BOILER

Sheet 5 of 42

2.4.13 One Limestone silo/bunker system for boiler, If required, including support steel, rotary air lock feeder for flow control, discharge piping system to combustor.

Please furnish limestone handling details (i.e., capacity, bulk density, conveying distance, no. of bunkers, limestone silo capacity etc).

As per NIT (Refer Design philosophy –Coal and Ash Handling System).

215. PC150/E/4003/ VI.-5.3.7 6 of 42 2.4.24 Draft system (for each boiler unit) comprising: 2.4.24.1 2x60% Primary air fan, control mechanism and suction hood and silencer. 2.4.24.2 2x60% Secondary air fan, control mechanism and suction hood and silencer. 2.4.24.3 2x60% Induced draft fans, control mechanism. 2.4.24.4 2X100% capacity sealpot blowers (1W+1S)

As per Section-VI.-4.0- Process Design basis -FD and ID fan are with 1W+1S configuration (ie-2x100% for FD and 2x100% for ID fan) the referred clause indicates 2x60% fans TFL/PDIL to review and confirm which clause to be followed. In addition seal pot blowers are not applicable for PC fired Boilers

for ID & FD fan, cl 3.4 (process design basis Section VI-4.0) ) shall govern. However, Cl. 2.4.24.4 2X100% capacity sealpot blowers (1W+1S), shall remain stands, if required. Amendment shall be issued.

216. PC150/E/4003/ VI.-5.3.7 8 of 42 3.9 Boiler efficiency shall be calculated based on ASME PTC-4.0 (Energy Balance method).

Radiation loss shall be based on ABMA curve (not measured) as defined in ASME PTC 4.1 1991 Unaccounted losses will not be measured it will be calculated value and it will be furnished along with the performance test procedure during contract execution.

Bidder to provide in the bid: 1.) Boiler Efficiency to be guaranteed. 2.) Coal consumption based on coal characteristics provided in Annexure-1_Section-VI-2.0. 3.). During PGTR, bidder to estimate coal consumption based on boiler efficiency as per PTC-4.1 1991 and applying correction factors in case of deviation of coal quality given in clause No. 1.0 of Section VI-2.0. . Based on above bidder to guarantee the specific work cost as per Section-VI-8.0.

217. VI-5.3.7

8 of 42

3.9

Boiler efficiency shall be calculated based on ASME PTC-4.0 (Energy Balance method). The PG test shall be done by either direct method and or relevant PTC

Owner may please note that PG test using direct method will involve high uncertainty, which will lead to wrong results. Hence bidder will

Bidder to provide in the bid: 1.) Boiler Efficiency to be guaranteed. 2.) Coal consumption based on coal characteristics provided in Annexure-1_Section-


Sl. No.


Page 27 of 42

VI-5.3.7 14 of 42 10.0 code. follow Clause- 3.9 of Sec.VI-5.3.7. Kindly confirm.

VI-2.0. 3.). During PGTR, bidder to estimate coal consumption based on boiler efficiency as per PTC-4.1 1991 and applying correction factors in case of deviation of coal quality given in clause No. 1.0 of Section VI-2.0. Based on above bidder to guarantee the specific work cost as per Section-VI-8.0.

218. DESIGN PHILOSOPHY BOILER PC009/E/4003/Section -VI-5.3.7

15 of 42 12.0 sub clause 12.1

Modular Refractory Material (Ceramic Blankets) shall be used for walls and arch for

Refractory insulation castable as backup layer and dense refractory castable as hot face layer will be used in combustor waterwalls. Ceramic Blanket Modules will not be used for walls as they cannot withstand erosive action of fluidised bed.

Noted.

219. DESIGN PHILOSOPHY BOILER PC009/E/4003/Section -VI-5.3.7

15 of 42 12.0 sub clause 12.3

Material specifications and test methods of refractory should conform to ASTM Standard. However, proprietary goods by qualified manufacturers may be used if specified in the drawings and/or data sheets.

All refractory materials will be tested based on IS standards. Only erosion resistance and CO resistance of dense bricks/castablewill be tested as per ASTM standard. ASTM C704 for erosion resistance and ASTM C288 for CO resistance. Datasheets of various bricks and castables will be as per BHEL requirement for the boiler.

As per NIT.

220. PC009/E/4003/ Section –VI-5.3.7, Rev 0

Sheet 19 of 42

17.1 The contractor shall furnish tubular type or regenerative type of air heater. If tubular air heater is offered, one number for each secondary air and primary air shall be offered by vendor.

Horizontal Tubular Airpreheater with combined primary & secondary blocks will be offered in which both primary air & secondary air are independently heated up. This is in line with the practice followed for all the similar boilers.

NOTED. AMENDMENT SHALL BE ISSUED.

221. PC009/E/4003/ Section-VI-5.3.7

1371 of 2464

27.1 Electrostatic Precipitator: Introduction

ESP shall be designed considering N-1 philosophy, where N is the number of installed streams of ESP.

Bidder understand that ESP to be designed considering N-1 philosophy to meet the required emission level, where N is the number of installed fields per gas stream of ESP. Purchaser may please confirm.

Bidder to note that N-1 philosophy has been considered for single stream ESP. However, for double stream ESP, N-2 philosophy shall be govern.

222. PC150/E/4003/ VI.-5.3.7 27 of 42 27.2 Minimum 1.5 m wide platform shall be provided all around the ESP passes at intermediate and T-R set elevations. Minimum 1.0 m wide platform hall be provided all around the Hopper at hopper level.

Bidder Shall provide Maintenance Platform at access door side only .

Minimum 1.5 Mtr Maintenance platforms shall be provided at Access Doors side as well as other location where maintenance shall be required.

223. PC009/E/4003/ Section-VI-5.3.7

1374 of 2464

27.3. Electrostatic Precipitator:Specific requirements

Walkways between series fields shall be provided to facilitate inspection and maintenance at the bottom of the precipitator collecting plates.

Bidder does not envisage walkway between series fields inside ESP casing for safety purpose. However structural member envisaged in inter-field gap for supporting internals are conveniently used for inspection and maintenance purpose.

Minimum 1.5 Mtr Maintenance platforms shall be provided at Access Doors side as well as other location where maintenance shall be required.

224. PC150/E/4003/ VI.-5.3.7 27 of 42 27.2 The protection for rapping motor from exposure to rain shall be provided.

Bidder shall offer EMIGI design ESPm for this application. Hence rapping motor is not applicable for offered design

For EMIGI design, if suitable canopies are not provided, then bidder to ensure the same shall be of outdoor application

225. PC150/E/4003/ VI.-5.3.7 27 of 42 27.2 Minimum aspect ratio of the ESP (electrode zone) shall be 2, so as to minimize re-entrainment and carryover of the collected dust, and ensure better ESP performance

Kindly furnish the Input parameter to confirm the same.

Aspect ratio as per OEM standarad. However, velocity of flue gases in ESP shall be maintain less than 1 m/s. Amendment shall be issued.


Sl. No.


Page 28 of 42

226. PC150/E/4003/ VI.-5.3.7 28 of 42 27.3 ESP structure shall be provided with Corten (Weathering) Steel ESP structure shall be IS material only (IS2062).

ESP structure material of IS 2062 is acceptable. However seaworthy epoxy painting C4 suitable for minimum 15 years shall be provided. Amendment shall be issued.

227. PC009/E/4003/ Section-VI-5.3.7

1373 of 2464

27.3 Electrostatic Precipitator: Specific requirements

ESP structure shall be provided with Corten (Weathering) Steel Bidder propose to offer ESP supporting structure of carbon steel conforming to IS-2062. Corten steel material is not required since the location of installation is not having corrosive environment. Purchaser may please confirm.

228. PC150/E/4003/ VI.-5.3.7 29 of 42 27.3 The lower one third or 1.5 m whichever is higher shall be lined with 16Gauge or heavier, type 304SS.

Bidder shall provide necessary heating arrangement and Proper valley angle for hopper to ensure the free flow of ash, hence SS lining is not envisaged.

as per NIT

229. PC150/E/4003/ VI.-5.3.7 29 of 42 27.3 Panel type heating element to prevent ash bridge formation in addition to panel heater

Panel type heaters are tailor made to suit the hopper dimensions and hence heater size, voltage rating. kW rating are not standardized. Spares are not readily available and procurement of spares is difficult. For replacement of heaters, the hopper insulation need to be removed which may lead to other difficulties. ESP shut down is required for panel type heater replacement. In addition. power consumption for panel type will be higher compare to Pad Type heater . Hence, we propose to offer Pad type hopper heaters instated of Panel type for hoppers, due to higher cost and higher power consumption.

Noted

230. PC150/E/4003/ VI.-5.3.7 31 of 42 27.6 Discharge electrodes shall be constructed from durable, corrosion and erosion resistant material. In case, spiral type discharge electrodes are being offered, the material for the same shall be UHB904L or equivalent.

Bidder Shall offer Pipe and Spike Emitting electrode with MOC of MS.

As per NIT.

231. PC150/E/4003/ VI.-5.3.7 32 of 42 27.7 Remote on/ off capability from EPMS. Bidder Shall offer latest type of microprocessor based TR set controller with RS 485 Communication series and same will be hooked up with Main DCS. Hence separate EPMS system is not envisaged for this application.

Noted.

232. PC150/E/4003/ VI.-5.3.7 33 of 42 27.8 The Transformer Rectifier (TR) sets shall be optimally sized and shall have the required electrical ability under sparking conditions.TR sets shall be three phase

Bidder shall offer Single phase Transformer for this application without affecting the performance of ESP.

As per NIT.

233. PC150/E/4003/ VI.-5.3.7 33 of 42 27.8 Silicone oil filled, free standing transformer rectifier assemblies in steel housing with HV disconnect and ground switch for each section of the ESP field.

Mineral oil filled type transformer rectifier is recommended in place of silicon oil transformer in view of following reasons: Low cost and indigenously available. Silicon oil is to be imported and limited Vendors are available for silicon oil. Satisfactory ESP performance & no complaints with mineral oil filled type TR sets.

As per NIT.


Sl. No.


Page 29 of 42

Separate Filtering machine has to be used for silicon oil. Mineral oil conforming to IS-335 is adequate for the satisfactory operation of TR sets. Hence we have considered mineral oil filled transformer rectifier sets

234. PC150/E/4003/ VI.-5.3.7 35 of 42 27.14 ESPs serving one boiler shall be provided with a complete control system consisting of microprocessor based Electrostatic Precipitator Management System (EPMS), TR set controllers, rapper controllers, communication controllers, hopper heater controls, insulator heaters and pressurization system controls and all other controls required for safe, efficient and reliable operation.

Bidder Shall offer latest type of microprocessor based TR set controller with RS 485 Communication series and same will be hooked up with Main DCS. Hence separate EPMS system is not envisaged for this application.

Noted.

235. PC009/E/4003/ Section-VI-5.3.7

1383 of 2464

27.18 Electrostatic Precipitator: General Requirements:

The roof inspection floor of ESP shall be provided complete with patterned type (raised / teared drop) aluminium sheet cladding.

The roof inspection floor shall be of mild steel plate of patterned type (raised). Penthouse with colour coated mild steel sheet will be provided over roof. This is standard design offered by bidder in more than 1500 ESPs supplied so far. Purchaser may please confirm.

Noted. However, same shall done as per OEM recommendation.

236. PC150/E/4003/ VI.-5.3.7 General Point

Penthouse Over ESP Penthouse over ESP roof is not applicable for offered design, our TRS sets are suitable for outdoor duty condition.

As per NIT.

237. PC150/E/4003/ VI.-5.3.7 3 of 88 1.1 Vendor List ESP Sub vendor list shall as per Bidder standard.

Bidder to note that Vendor List enclosed with the NIT shall only be followed. Bidder to also note that any other item for which vendors are not mentioned in NIT, successful LSTK bidder may furnish list of proven suppliers with PTR subject to Owner’s/Consultant’s approval during detailed engineering.

238. VI-5.1 VI-5.3.7

6 of 8 22 of 42

5.0 20.1

HYDRAULIC RETENTION TIME: Steam drum (LHH – empty) Min – 10 minutes Steam drum shall have adequate storage capacity (minimum storage of 1 minutes between recommended normal level and permitted low low level) so that in the event of tripping of running feed pump, the standby feed pump starting automatically shall be able to prevent tripping of the boiler from low low drum level while boiler was operating at MCR and withnormal drum level.

Kindly provide expansion of the abbreviation –LHH. Also retention time of 10 min. seems to be impractical even while considering entire volume of drum. Customer may relook on this requirement. However, bidder envisages to maintain sufficient retention time incase of BFP trip for enabling restart of standby pump. Kindly confirm.

Steam drum hydraulic retention time 10 minutes (High High Level to Empty) is correct. Bidder to consider this.

239. VI-5.3.7 VI-5.3.7

5 of 42 19 of 42

2.4.8 17.1

Tubular air-heater system completes, including casing, structural steel supports etc. The contractor shall furnish tubular type or regenerative type of air heater,…

Bidder propose to offer either tubular or regenerative air preheater. Kindly confirm.

Tubular air heater system shall be considered. Amendment shall be issued.

240. VI-5.3.7 VI-5.3.7

13 of 42 20 of 42

9.1.11 18.2

No header shall be placed in the flue gas path. All headers in the boiler shall have flat end covers. All economiser headers shall be located outside the gas path.

Headers shall be placed outside the flue gas path wherever possible. This is inline with our OEM recommendation and previous contract experience. Kindly confirm.

Noted considering OEM recommendation. However, bidder shall follow this requirement, if possible.

241. VI-5.3.7 17 of 42 14.8 The inlet air ducting to the FD fans shall contain an aerofoil for air flow measurement and shall be of carbon steel

Aerofoil used for Flow measurement will be located in Hot

Noted.


Sl. No.


Page 30 of 42

Secondary air duct as per our standard practice.

242. VI-5.3.7 40 of 42 31.4 Radiography of welds in C- 1/2 Mo & Cr- Mo - Steel preferably is carried out after heat Treatment.

For Gr 91- RT/UT and MPI will be done after Stress relief(SR). For other than Gr 91, RT will be done before SR.


243. VI-5.3.7 40 of 42 31.5 Hardness test on welds of Cr-Mo, materials after final heattreatment shall comply to ASME requirements.

Hardness test will be done only for high chromium CSEF materials like Gr 91. Applicable only for Piping and headers.


244. PC009/E/4003/ Section -VI-5.3.7

1378 of 2464

27.8 Transformer Rectifier

The Transformer Rectifier (TR) sets shall be optimally sized and shall have the required electrical ability under sparking conditions.TR sets shall be three phase.

Bidder proposes single phase TR set for energizing the ESP fields. He single phase TR sets are proven for the ESP applications and are also very effective for the high resistive ash. Bidder has successfully supplied the single phase TR sets for more than 1000 ESPs. The effectiveness of the Three phase TR sets are yet to be proven and hence, Bidder shall not supply three phase TR sets without proper provenness. Purchaser may also get reference / comments from any utilities having three phase TR sets for similar ESP application. Purchaser may review and confirm

As per NIT

245. SecVI-5.4 8 of 89 1.2.2-bb Cable trench/Cable tray with supporting structure For the laying of main incoming 11KV power supply cables from existing HT panel, we have utilised existing cable rack for new tray installation purpose. Kindly confirm

Tapping of Power from 11 KV Switchboard at Main Receiving Substation (including supply & erection of all required materials like dedicated structures, structural supports for cable tray, cable trays, cables, cable termination etc.) shall be in LSTK Contractor's scope. Main Pipe rack may be utilised (Support for Cable Trays in LSTK Contractor’s scope) . However, in case Main pipe rack is not available in cable route, dedicated structures with Support for Cable trays shall be in LSTK Contractor’s scope.

246. SecVI-5.4 8 of 89 1.4 Normal power supply shall be tapped from two numbers of 11KV feeders at Owner’s Main Receiving substation and further distribution shall be in LSTK Contractor’s scope.

Client to provide the following details to consider the same in our scope.

247. i) Breaker feeders in existing switchgear is not in our scope. Kindly confirm.

11 kV Switchboard in Main Receiving Substation is not in scope under Steam Generation Plant.

248. ii) Make and Model no. of existing 11KV switchgear

Details of 11 kV Switchboard in Main Receiving Substation shall be provided during detailed engineering.

249. iii) Bus bar, tie Breaker and CT rating

Details of 11 kV Switchboard in Main Receiving Substation shall be provided during detailed engineering.

250. iv) If any additional relay / meter modification requirement in existing switchgear

Cable Differential relays for both the end to be supplied by Downstream user contractor i.e. Steam Generation Plant LSTK Contractor. Cable Differential relay will be of Fiber Optic Cable based communication only. Also FO cables between relays at both the ends shall be in LSTK Contractor's scope.

251. v) Panel room layout and location Details of Main Receiving Substation shall be


Sl. No.


Page 31 of 42

of exisitng building provided during detailed engineering. 252. SecVI-5.4 8 of 89 1.4 For Emergency power LSTK Contractor shall provide DG System

complete in all respect alongwith DG Power Distribution Board. However, Bidder shall indicate the details of Emergency Loads in the bid

We have considered the DG set for emergency power requirement of proposed steam generation package shall be as per system requirement. Also for details of the same shall be provided during detail engineering stage.

Bidder shall indicate details of emergency loads in Technical Bid.

253. SecVI-5.4 9 of 89 1.9 Electrical system studies System studies shall be considered with in our battery limit only. Kindly confirm

Noted. All data required for Overall Electrical System Study shall be provided by LSTK Contractor.

254. PC150/E/4003/SecVI-5.4 9 of 89 1.7 Construction Power Please arrange construction power at 415 V level also in addition to 11KV

Constructing Power shall be made available at 11 kV Voltage Level only.

255. PC150/E/4003/SecVI-5.4 9 of 89 5.1.1 Route length between Main receiving substation and battery limit Please provide the Cable route length between 11 kV Switchboard at main receiving substation and bidder's battery limit

Refer Plot Plan indicating area marked as ' Electrical Distribution System'. Cable route shall be finalised during detailed engineering.

256. SecVI-5.4 10 of 89 1.14 All electrical equipments installed in the areas classified as hazardous shall be certified for such use by a recognized certifying authority such as CIMFR Dhanbad / PESO, Nagpur etc.

For all the Electrical equipment of steam generation plant shall be installed in non hazardous area only. Hence the hazardous area classification & Flame proof are not applicable and not considered.

Hazardous Area Classification shall be finalised during detailed engineering in line with relevant IS/EC Standards.

PC150/E/4003/SecVI-5.4 3 of 12 2.3 Flame proof motors shall, in addition, comply with the requirements laid down in IS: 2148.

257. PC150/E/4003/SecVI-5.4 10 of 89 Cl 1.16

Protection for outgoing feeder of 11 kV Switchboard at Main Receiving Substation to LSTK Contractor Switchboard (Inter tripping, Cable Protection etc.

No modification is envisaged in the 11kV existing panels. Customer is requested to confirm.

Noted. The scope of Interface with 11 kV Switchboard at Main Receiving Substation shall be as per NIT. Cable Differential relays for both the end to be supplied by Downstream user contractor i.e. Steam Generation Plant LSTK Contractor. Cable Differential relay will be of Fiber Optic Cable based communication only. Also FO cables between relays at both the ends shall be in LSTK Contractor's scope.

258. SecVI-5.4 13 of 89 2.1.6 - L If VFD is provided in BFW Pump and FD/ID Fans , There shall be provision for by-pass facility .It shall be possible to start the motors in DOL mode through by-pass system in case there is any problem/fault in the VFD.

If considered HT motors with HT VFD, the requirement of by pass starter is not applicable.

As per NIT.

259. SecVI-5.4 13 of 89 2.1.6 - m Minimum P.F. shall be maintained as 0.95 at every voltage level. Power factor correction panel shall be considered in LV level only. Any Power factor correction panel for HV / MV level is not required and not considered.

Noted. Power Factor shall be maintained at each Voltage level. Accordingly, Capacitor bank at 3.3 kV or 11 kV shall also be provided, if required.

SecVI-5.4 71 of 89 14.1 Capacitor bank at 3.3 kV or 11 kV may also be considered, if required.

260. SecVI-5.4 13 of 89 2.1.6 - n Electrical equipments i.e. DG Set, Transformers, Switchgears, MCCs, PCCs etc. shall have capacity for future requirements. The Margin shall be as follows: i) DG Set sizing: 25% is added to the Maximum Emergency Load. ii) HV Transformer: 25% is added to the Continuous Peak Load. LV Transformer: 30% is added to the Continuous Peak Load.

For Start up, due to very high demand start up load requirement of proposed steam generation plant, DG set is not sufficient for start up and not considered. Hence Client to provide the startup load at outlet of 11KV feeders in MRSS plant. Also for Emergency loads, we have considered 2 nos. of 415V Emergency DG set (1W+1S) for proposed steam generation plant in our scope.

Noted. DG Shall be provided for Emergency Power Requirement/ Emergency Operation and Safe Shutdown of Steam Generation Plant. Bidder shall clearly indicate Start-up Load Requirement in their Bid. Presently, 1 No. Emergency DG Set is envisaged. The rating of DG Set shall be as per NIT.

SecVI-5.4 22 of 89 5.1.2 DG Sets shall be suitable for Black start. SecVI-5.4 23 of 89 5.1.11 HV emergency board shall also have 2 normal and 1 emergency

incomer. SecVI-5.4 32 of 89 25 3.3kV DG set shall be provided SecVI-5.4 35 of 89 9.2.1 DG set will supply the total emergency power requirement; keeping one

DG set of maximum rating as stand by.


Sl. No.


Page 32 of 42

Kindly confirm. 261. SecVI-5.4 13 of 89 2.1.6 - r r) Seismic zone as applicable shall be considered for design of all

electrical equipment. Kindly confirm the applicable zone for proposed site area.

Refer Section VI-5.5 : Design Philosophy - Civil & Structural Works.

262. PC150/E/4003/SecVI-5.4 18,19 of 89

Cl 3.3 & 3.4

All electrical equipment installed in the areas classified as hazardous…authority such as CIMFR earlier CMRI, Dhanbad. The item shall in addition bear the valid certification from PESO (earlier CCoE) ….

From list at clause 3.3, we understand that 11kV HT Switchgear need not be certified by CIMFR OR PESO. Customer is requested to confirm.

Noted.

263. SecVI-5.4 22 of 89 5.1.1 LSTK Contractor shall indicate details of power requirement and the Rating of 11KV Feeders at Main Receiving Substation in the Bid.

The same will be furnished in our technical offer. Also client to provide the maximum availablity of power at existing MRSS for propsoed steam Generation plant.

Power shall be made available at Main receiving Substation LSTK Contractor shall indicate details of power requirement for Steam Generation Plant.

264. SecVI-5.4 24 of 89 5.1.14 For the use of the Owner during plant shut down period, each area shall be provided with indoor type feeder pillar, which shall be located in a separate room other than substation building and away from hazardous area.

Kindly provide the qty of feeder pillar requirement in owner use.

2 Nos. Feeder Pillars (Specification as per NIT) shall be considered.

SecVI-5.4 24 of 89 5.1.14 Location of feeder pillar shall be decided during detailed engineering. 265. SecVI-5.4 24 of 89 5.3.1 In each substation a Main Lighting Distribution Board (MLDB) shall be in

provided. For proposed steam generation plant, we have considered common one no. MLDB is considered for all lighting distribution purpose. SLDB shall be considered each area local operationpurpose.

Noted.

266. SecVI-5.4 25 of 89 5.4.1 Separate dedicated Battery, Battery Charger and DC Distribution Board shall be provided in each substation.

For proposed steam generation plant, one set of DC system shall be sufficient and considered. Also the DC system shall be considered 2 nos. of Float cum boost charger with 2x100% Ni-Cd type battery. Kindly confirm.

Configuration of Battery Charger shall be as per NIT.

267. SecVI-5.4 32 of 89 29 The relays for outdoor 66 kV EHV switchyard shall also be of numerical type with communication facility

For proposed steam generation plant, the 33KV & 66KV system is not in our scope. Kindly confirm

Noted.

SecVI-5.4 34 of 89 8.1 VCB with all required protection to be considered in all the 33kV, 11kV & 3.3kV switchboards. .

268. PC150/E/4003/ Section -VI-5.4

1431 of 2464

Sl No.36 All Motor feeders of PMCC & MCC (irrespective of Rating) shall have door mounted communicable (Modbus / Profibus) type Motor Protection relay (MPR) with display

For the ESP rapping motors, the rating is only fractional horse-power (0.37 kw) and the same operates intermittently. These rapping motors are controlled from a separate Rapper controller. The On/OFF status of these motors along with any alarm status is also shown in the PC based integrated monitoring and control system for ESP. Hence, for these fractional horse power motors operating intermittently with separate control and monitoring options, door mounted communicable (Modbus / Profibus) type Motor Protection relay (MPR) with display is not envisaged. The arrangement proposed above is the same that is supplied to all the power utilites across the country. Owner / EIL may review and confirm.

Noted for 0.37 KW ESP rapping motors only. All other motor feeders as per NIT.

269. PC150/E/4003/SecVI-5.4 32 of 89 Cl 7.0 –Sl no 38 Cable Differential relays for both the end to be supplied by Downstream Cable differential protection is not Cable Differential Protection shall be provided.


Sl. No.


Page 33 of 42

& 43 of 89

& Cl9.5.1.59

user contractor. All Cable Differential Relays shall be FO Cable type only.

listed in the table in Cl 7.10. Please confirm applicability of the same & type of feeder in which it is required.

270. SecVI-5.4 35 of 89 9.1.3 Motors of Coal Conveyor, Coal Handling Section, Ash Handling Section shall have IP 65 enclosure.

As per tender tech. specification of Motors Cl. No. 4.1.1 page no. of 3 of 12, We have considered enclosure protection of all motors shall be IP55 for indoor and IP55W for outdoor. Kindly confirm

As per NIT.

271. PC150/E/4003/SecVI-5.4 35 of 89 Cl9.1.6 Creepage distance shall be 31mm/kV (for highest system voltage) for all equipment

Min. Creepage distance for 11kV shall be 220mm.

Min. Creepage distance for 11kV shall be 320mm.

272. SecVI-5.4 35 of 89 9.1.4 4 mm FRP (fire retardant and UV stabilized) canopies shall be provided for all outdoor equipments like motors, starters, LCS, SDBs, sw. sockets etc. PA stations shall have acoustic hood.

2mm thickness GI Canopy shall be considered outdoor motors, LPBS, SBD, etc. Kindly confirm

As per NIT.

273. SecVI-5.4 37 of 89 9.3.2 The rating of power transformers shall be selected on the basis of load and future load growth. For future load growth the following provision shall be made:- - 25% spare capacity in HV transformers above continuous peak load. - 30% spare capacity in LV transformers above continuous peak load.

We have considered all Power & auxiliary transformers shall be 2x100% configuratuion with loading of 80% including design margin / spare capacity. Kindly confirm.

As per NIT.

274. SecVI-5.4 38 of 89 9.3.11 Transformer rooms shall have slab and shall be under shed. We have considered all transformers except Lighing / welding transformers shall be oil filled type outdoor mounted. Any room or roof slab are not required and not considered. Kindly confirm.

As per NIT.

275. SecVI-5.4 38 of 89 9.3.13 Certificates for Type Tests on similar type Transformers shall be submitted.

Similar / Higher rating already conducted type test certificate shall be provided. Kindly confirm

Noted.

276. SecVI-5.4 39 of 89 9.5.1.4 All HV, MV & LV Switchboards shall be LOTO compliance. LOTO is considered for all HV/MV switchgear & LV PCC. LOTO for MCC level is not considered. Kindly confirm.

As per NIT.

277. PC150/E/4003/SecVI-5.4 39 of 89 Cl9.5.1.5

11 kV & 3.3 kV Switchboard shall conforms to IS/IEC 62271-200, IAC-A FLR-50KA/40KA 1

IAC for 11 kV & 3.3 kV Switchboard shall be 40KA for 1s.

Noted.

278. PC150/E/4003/SecVI-5.4 39 of 89 Cl9.5.1.8

All busbars of 11kV & 3.3kV switchgear including bus duct shall have Raychem sleeving.

The bus bars will be provided with Heat shrinkable PVC insulating sleeve.

As per NIT.

279. SecVI-5.4 39 of 89 9.5.1.8 The busbars and connection shall be made of electrolytic grade copper only. Aluminium busbars are not acceptable. All busbars of 11kV & 3.3kV switchgear including bus duct shall have Raychem sleeving.

We have considered all MV panel & bus duct bus bar shall be Aluminium. Kindly confirm

As per NIT.

280. PC150/E/4003/SecVI-5.4 40 of 89 Cl9.5.1.19

11KV & 3.3KV Breaker shall be with Integral Earthing switch system with proper interlocks.

Separate Bus bar Earthing Truck in place of integral Earthing will be provided. This method of bus bar Earthing offers safe and positive Earthing.

As per NIT.

281. PC150/E/4003/SecVI-5.4 40 of 89 Cl9.5.1.24

The maximum height of the switchboard and other control panels shall be limited to 2200 mm.

Height of our type tested design for 40kA fault level is 2800mm. customer is requested to accept the same.

The maximum height of the switchboard shall be limited to maximum 2400 mm.

282. SecVI-5.4 42 of 89 9.5.1.48 The control compartment and power compartment shall be separate. Noted and confirmed for HV / MV panel. For LV panel, based on the OEM type testsed design the same is not applicable. Kindly confirm.

Noted.

283. SecVI-5.4 43 of 89 9.5.1.57 All 11kV, 3.3. kV and 415 V Switchboards shall preferably be of same make for ease of operation & maintenance.

We have considered group of all 11KV & 3.3KV panel shall be same make and the group of all LV PCC / MCC / PMCC shall be same

Noted.


Sl. No.


Page 34 of 42

make. Kindly confirm. 284. SecVI-5.4 47 of 89 9.6.16 Motor rated above 30 KW shall have on line greasing provision and for

motor rated above 45 KW, grease outlet feature shall be provided. The same shall be as per OEM standard. Kindly confirm.

As per NIT.

285. SecVI-5.4 52 of 89 9.10.8 The VFD shall be provided with Input and Output transformer. To prevent harmonics in the station supply 12 pulse rectifier shall be deployed at Input of the VFD.

For LV VFD, rating upto 150KW shall be considered 6 pulse type and abobe 150KW shall be considered 12 pulse tyepe. Kindly confirm.

As per NIT.

286. SecVI-5.4 54 of 89 9.15 Conduits Conduit shall be considered indoor building lighting circuit only. Kindly confirm.

Noted.

287. SecVI-5.4 54 of 89 9.16.1 Bus-Duct The bus bars and connection shall be made of electrolytic grade copper only. Aluminium busbars are not acceptable.

We have considered all bus duct bus bar shall be Aluminium. Kindly confirm

As per NIT.

288. SecVI-5.4 57 of 89 10.1.4 Power cables with conductor size upto and including 16 sq. mm shall be with copper conductor, conductor size 35 sq. mm and above shall be aluminium conductor.

We have considered all power cables upto 16Sq.mm copper conductor above 16Sq.mm aluminium conductor. Kindly confirm

As per NIT.

289. SecVI-5.4 61 of 89 10.2.2 The cable racks shall be ladder type, pre-fabricated from suitable hot dip galvanised steel/heavy duty FRP material. Cable racks around cooling tower areas shall be of heavy duty FRP (fire retardant and UV stabilized) material. Maximum cable tray size shall be 600mm wide.

We have considered all cable rack shall be GS material. Kindly confirm.

As per NIT.

290. SecVI-5.4 61 of 89 11.0 ILLUMINATION SYSTEM Illumination shall be considered within our battery limit only. Also illumination for non plant building / client / others supplied area, compound wall are not considered in our scope.

Noted.

291. SecVI-5.4 68 of 89 12.1.2 Common underground earthing grid shall be provided covering sub-stations and plants which is further connected to overall Earthing Grid. The overall earth resistance (dry) hall be limited to 1 ohm.

Kindly provide the soil resistivity for proposed steam generation area.

Soil Investigation Report is not available.Bidder shall visit the site & satisfy themselves about the nature of soil & if felt necessary, bidders shall conduct soil investigation to form their design data for bidding purpose.

292. PC150/E/4003/SecVI-5.4 68 of 89 12.1 EARTHING AND LIGHTNING PROTECTION We understand that underground earthing and lightning protection within battery limit is in bidder scope. Interface with existing earthing system shall be in customer scope. Kindly confirm

Connection to Main Earthing Grid shall be in LST Contractor’s scope.

293. PC150/E/4003/SecVI-5.4 68 of 89 12.1 Soil resistivity Please provide the tentative soil resistivity for tendering purpose.

Soil Investigation Report is not available. Bidder shall visit the site & satisfy themselves about the nature of soil & if felt necessary, bidders shall conduct soil investigation to form their design data for bidding purpose.

294. PC150/E/4003/SecVI-5.4 71 & 72 of 89

15.1 PA System Bidder has considered analogue type PA System. Kindly confirm

Noted. PA System shall be microprocessor based as per NIT. PA System shall have protocol to interface with other PA Systems of other Units of Fertiliser Plant.

295. VI- 5.4 1409 1.14 hazardous areas Please indicate the hazardous area list

Hazardous Area Classification shall be finalised during detailed engineering as per relevant Standards.

296. VI- 5.4 1409 1.13 3D modelling Bidder proposes to use Auto-cad -2D drawings for cable tray routing. Please confirm

As per NIT.

297. VI- 5.4 1408 1.9 etap studies- third party Bidder proposes to use internal resources to get the Etap analysis in-house instead of reputed third

Reputed Third Parties for Electrical System Studies are Tata Consulting Engineers, ETAP Automation Pvt. Ltd. etc.


Sl. No.


Page 35 of 42

party. In case not accepted, please furnish list of reputed third parties engaged in these studies

298. VI- 5.4 1412 2.1.6.n LV transformer margin 30% is too high margin to be considered. As per standard practice, 10% margin is considered in all projects. Please confirm

As per NIT.

299. VI- 5.4 1423 5.3.1 1/3rd lighting load from DG set Same shall be decided during detailed engineering based on requirement of emergency lighting load

As per NIT.

300. VI- 5.4 1472 17.3 Conveyor Control Panel (PLC based). Bidder proposes BHEL DCS for CHP, AHP packages in place of PLC in line with other projects. Please confirm

Not acceptable. Bidder to follow tender requirement.

301. VI- 5.4 1472 17.3.1.v Gravity take up switch Application not understood, please specify the purpose & recommended makes for same

It is safety device for Coal Conveyor System. Make shall be as per Section VI-15.0 of NIT (Refer Sheet 35 of 88).

302. VI- 5.4 1475 21.3 Numerical relays shall be done by OEM expert

Same shall be done by personnel who knows to handle the relay instead of OEM supplier. Please confirm

As per NIT.

303. VI- 5.4 - - Transformers Dry type transformers shall be considered for 11/0.415KV ratings upto 2.5MVA. Please confirm

Transformers shall be ONAN Type. Also, rating of 11/0.433 kV Transformers shall be limited to 2 MVA only.

304. VI- 5.4 - - Transformers 3 transformer arrangement with 50% loading shall be considered. Please confirm

Design as well as loading of Transformers shall be as per NIT.

305. PC150/E/4003/ Section-VI-5.4

1539 of 2464

Sl No.5.2 Panel Arrangement

The Switchboards shall be in fixed/draw out, single front execution, fully compartmentalised type and divided into distinct panels,

Bidder proposes Double front LT (415 V ) MCC for ESP and FGD applications. The double front panels are proven .They are supplied and operating successfully in the power utilites across the country. The double front panels have reduction in cost and control room space savings for the customer. It becomes difficult to accommodate single front panels, especially for ESP and FGD related MCCs. Purchaser may review and confirm

Noted for MCC fro ESP and FGD Application only. All other Switchboards as per NIT.

306. PC150/E/4003/SecVI-5.4

Sheet 7 of 11

7.1.1

UPS: Microprocessor based monitoring system for UPS to supervise the UPS operation & print out data at present timeautomatically by using owner printer.

Bidder proposes smart bus protocol through which UPS signal can be programmed and monitored in DCS. Please confirm.

As per NIT.

307. PC150/E/4003/SecVI-5.4 4 of 17 5.1.2 Medium Voltage switchgear The complete assembly shall be dust, damp and vermin proof having minimum degree of protection equivalent to IP-52 as per IS/IEC:60947.

As per tender deisgn philosophy of Electrical Cl. No. 9.1.5 page no. of 35 of 89, Enclosure protection of all MV Switchgear shall be rating upto 1600A shall be IP 52 and above 1600A shall be IP42.

Noted.

308. PC150/E/4003/SecVI-5.4 3 of 6 3.1 Ladder type cable racks shall be fabricated as per attached Drawing Nos. PDS: E 530 to PDS: E 538 (9 Sheets).

We understand that the all cable trays shall be bolted type construction and support structure shall be welded type construction Kindly confirm.

Noted.

309. PC150/E/4003/SecVI-5.4 7 of 19 5.2.1 The system shall comprise of gravity fed oil tank, unless otherwise For Emergency DG set, the fuel oil As per NIT. Fuel tank Capacity shall be 24


Sl. No.


Page 36 of 42

specified. tank shall be mounted in built in DG set the same shall be as per OEM design.

Hours continuous operation. All statutory Approval shall be in LSTK Contractor's scope.

310. SecVI-5.4 7 of 89 1.2.2 - x Cathodic Protection System Kindly provide the soil resistivity for proposed steam generation area to consider cathodic protection in our scope for underground pipe work, tank bottom.

Soil Investigation Report is not available.Bidder shall visit the site & satisfy themselves about the nature of soil & if felt necessary, bidders shall conduct soil investigation to form their design data for bidding purpose.

311. TECHNICAL SPECIFICATION PASSENGER CUM GOODS LIFT

Sheet 1 of 14 1796/2464

TECHNICAL SPECIFICATION PASSENGER CUM GOODS LIFT

Lift capacity Kindly intimate. Refer clause No. 2.2g of Section-VI-1.0 of NIT.


5.5.6 The Ni-Cd battery shall be heavy duty type and suitable for 20 successive starting at-tempts of the engine without draining. The charger shall have both float / boost charging facilities. The battery shall be complete with suitable stand and other required accessories.

We shall offer Lead/ Acid Battery for engine starting suitable for 6 successive starts of the engine without recharging. Ni-Cd bat-tery are not recommended for engine starting and the same is not presently in practice.

As per NIT.

313. SLD Conceptual SLD (Drg. No. PC150-1225) Please mark the battery limit in 11kV switchboard

Extreme end of the area marked as ' Electrical Distribution System' in Plot Plan may be considered as Battery Limit of 11 kV Switchboard at Main Receiving Substation .

314. SLD Conceptual SLD (Drg. No. PC150-1225) please clarify 11kV black start DG for startup One UNIT of Steam generation plant or three plants excluding client loads.

DG for Black Start is not required. DG shall be provided for Emergency Power Requirement / Emergency Operation / Safe Shut down of complete Steam Generation Plant in totality.DG shall be designed for all the 3 Boilers and Auxiliaries.

315. SLD Conceptual SLD (Drg. No. PC150-1227) please clarify common or separate 415V emergency DG set for shut down of Steam generation plant excluding client loads.

Common DG shall be designed for Emergency Operation / Safe Shut down of complete Steam Generation Plant in totality.

316. SLD Conceptual SLD (Drg. No. PC150-1225) Please furnish distance between main receiving station & 11kV switchboard at steam generation plant.

Extreme end of the area marked as ' Electrical Distribution System' in Plot Plan may be considered as Battery Limit of 11 kV Switchboard at Main Receiving Substation. Accordingly LSTK Contractor to consider cable length.

317. SLD Conceptual SLD (Drg. No. PC150-1225) 11kV switchboard can be avoided at steam generation plant.

11 kV power shall be provided at 11 kV Switchboard at Main Receiving Substation in Electrical Distribution System Area. LSTK Contractor shall consider the voltage Level of Switchboard as per actual load of Steam Generation Plant considering the electrical Loads and Voltage level of Electrical Motors, as per NIT. Local power isolating breaker panel shall be provided, in case upstream HV Switchboard of transformer is not located in same substation.

318. SLD Plot plan please furnish the location of electrical Sub substations for all mechanical packages

Extreme end of the area marked as ' Electrical Distribution System' in Plot Plan may be considered as Battery Limit of 11 kV Switchboard at Main Receiving Substation .


1.0 DETAILED SCOPE OF WORK

1.17 Removal of under ground and above ground structures. Estimation for removal of underground construction is not possible pre-bid since underground construction are not known hence same needs to be discussed

Refer Clause 57 of GCC.


Sl. No.


Page 37 of 42

mutually during execution (if applicable). Cost of same can not be considered during bidding.

320. General - - Dismantling of existing structures please furnish the details and drawings of facilities to be dismantled, rerouted, relocated etc.


1.0 DETAILED SCOPE OF WORK

1.20 Scope of Work in Outside Battery Limit (OSBL) Area Kindly clarify scope at Outside Battery Limit (OSBL) Area for estimation purpose.

As per NIT. For tentative location of Tie-in location of Piping & Material Handling please refer plot plan as marked 'Á' & 'B' respectively.


GENERAL DESCRIPTION OF SCOPE

m) Bar Bending Schedules for all RCC works. Bar bending schedule shall be prepared at site during execution.

Noted.


GENERAL DESCRIPTION OF SCOPE

s) Obtaining Statutory Approvals. Statutory approval for construction from local authorities needs to considered be in client scope. Only labour license shall be obtained by bidder contractor.

Refer Clause 59 of GCC


1.2 Topographical / Contour Survey

The Topographical Survey report of plant area is attached with the Tender for reference.

Attachment not found. Fairly graded land will be handed over to successful bidder. Refer attached Land Development Drawing.


1.2 The Topographical Survey report of plant area is attached with the Tender forReference.

Please provide the contour survey drawings and HFL of the plant to decide the proposed area FGL & FFL


1.3 Grading Fairly graded land site shall be provided to the CONTRACTOR. However, micro grading works shall be in COTRACTOR’s scope.

Micro grading of +/-300mm shall be considered by bidder around the building and structures only.

Extent of paving for the unit to be considered upto adjacent pheripheral drain. As such, micro-grading is to be considered upto the aforesaid limit.


1.4 Disposal of surplus earth

The CONTRACTOR shall dispose-off all surplus and unserviceable earth (if any), outside the plant in accordance to local Governing authority, at his own cost. Disposal shall be done at a place outside the plant, with the consent of the OWNER. Location of disposal area shall be decided by the CONTRACTOR and the required necessary approvals from the local bodies shall be the CONTRACTOR‘s responsibility.

For estimation purpose bidder needs to consider distance of disposal of earth. Kindly furnish approximate distance of disposal for estimation purpose. Approval for disposal of earth from local body needs to be considered in client scope.

Bidder may consider a distance of approx. upto 2 KM.Approval for disposal of earth from local body is in LSTK Contractor's scope.

328. General - - Disposal of surplus earth It is assumed that the dismantled materials shall be disposed at a distance of 2 to 5 km from the project site. If not, Please specify the distance of disposal from project sites.


1.10 Paving The CONTRACTOR shall provide RCC pavement for the complete area of the plant as job specific requirement. For the purpose of paving the Contractor’s scope is not limited only up to Battery Limit, but shall extend up to the adjacent roads around the unit.

Scope of RCC paving like particular area/structures/building etc. needs to be confirmed for estimation purpose.

Extent of paving for the unit to be considered upto adjacent pheripheral drain


1.1 The CONTRACTOR shall provide RCC pavement for the complete area of the plant as job specific requirement. For the purpose of paving the Contractor’s scope is not limited only up to Battery Limit, but shall extend up to the adjacent roads around the unit.

Battery limit is not shown in the layout. We request you to clearly indicate the pavement area in the layout


3 RCC blast resistance structure We request you to specify the requirement of blast resistant structure

Control room shall be blast resistant structure.


Sl. No.


Page 38 of 42


- Contour Drawings Kindly provide Contour drawings of the site.

Fairly graded land will be handed over to successful bidder. Refer attached Land development drawing.


3.4 Wind Load As per IS: 875, Part-3 2015, Value of K4 is being considered as 1 for this project. Please confirm. Also provide Wind Velocity of the project.

Basic Wind Speed, Wind Zone Number, Risk Factor, Terrain Category, Topography Factor, importance factor, the Gust Response Factor, etc. shall be as per IS 875 Part 3.


6.6 Limiting deflection 1. Please furnish the maximum transverse deflection of conveyor gallery, trestles and transfer points due to wind and seismic load to be adopted. 2. Please furnish the maximum permissible deflection limits for beams.

These shall be as per IS 800.


8.1.9 Seismic Load As per IS: 1893, Value of Importance Factor (I) is being considered as 1.5 for this project. Please confirm.

Seismic Design & seismic parameters shall be as per IS-1893. Same shall be finalised during detail design.


8.1.9 Seismic Load Kindly provide with site specific spectrum if any for the project.

Site specific spectrum is not available. However, contractor may carry out site specific seismic study for seismic design & same report shall be reviewed by PMC/client during detail engineering.


5.0 STEEL REINFORCEMENT

5.1 Steel reinforcement shall comprise: 1) CRS bars

Can normal TMT reinforcement (fe 500/550) steel be considered instead of CRS.

As per NIT.


5.10.6 All underground structures including top surface of foundations shall be painted with two coats of hot bitumen paint of grade 20/30 with quantity of bitumen at least 1.2 kg/m² per coat.

We request you to clarify requirement of bitumen coating (or) please provide the soil investigation recommendation for the same

As per NIT.

339. General - - Site grading Kindly furnish the topography survey showing contour level & FGL of proposed area.

Fairly graded land will be handed over to successful bidder. Refer attached Land Development drawing.

340. General - - Levels Please furnish the Finished ground level, Finished floor level and road levels to be followed in the project.

Fairly graded land will be handed over to successful bidder. Refer attached Land Development drawing.

341. CONSTRUCTION/ERECTION, PRECOMMISSIONING, COMMISSIONING AND START-UP PC150/E/4003/ SEC- VI - 7.0

75 of 134 3.1.2 For operating temperature 451-500 deg.C, For operating temperature 501-550 deg.C, For operating temperature 551-600 deg.C, 1st layer insulation shall be 25mm Ceramic Fibre Blanket of density 128 kg/m3 conforming to IS :15402

Ceramic fibre blanket are required for quite high temperature applications only (>7500C). For temperatures 400-7500C LRB mattress of density 150 Kg/m3 will be used for external insulation requirements of the boiler.

As per NIT


75 of 134 3.1.2 Rockwool Insulation shall be of water Repellent Grade and tested as per BS: 2972 for Water Absorption. Maximum water absorption is 0.5 kg/m2 in 48 hours duration.

Water absorption of Insulation wool will be adhering to IS 8183 and the absorption test shall be as per IS 3134.

OK, Noted


75 of 134 3.2 (a) Aluminium sheet as per IS-737 (designation 31000, condition H3 for flat sheet & 31500/51300, H4 for corrugated sheets)) shall be used for cladding.

As per BHEL’s standard practice Aluminium sheet material for cladding conforming with IS 737 Gr 19000 H2 (plain/flat) and IS 737 Gr 31000 H18 (corrugated) will be provided.

As per NIT


Sl. No.


Page 39 of 42

IS 737 Gr 19000 H2:

a. Excellent corrosion resistance.

b. Very ductile – easy to form. Hence the above material is used as cladding material for ducts and piping insulation.

IS 737 Gr 31000 H18: a. Strong and hard material b. Good corrosion resistance c. Full hard temper having

ultimate tensile strength Hence the above material is used as cladding material for combustor waterwall insulation.

344. VI-8.0 Performance & Guarantee tests

6 of 11 2.2 Works cost (Consumption of Raw material & Utilities) Guarantee: LSTK bidder shall guarantee the consumption of Raw material and utilities Like Coal,

Bidder will do PG test for Boiler efficiency only and Coal consumption will be back calculated from the calculated boiler efficiency.

Bidder to provide in the bid: 1.) Boiler Efficiency to be guaranteed. 2.) Coal consumption based on coal characteristics provided in Annexure-1_Section-VI-2.0. 3.). During PGTR, bidder to estimate coal consumption based on boiler efficiency as per PTC-4.1 1991 and applying correction factors in case of deviation of coal quality given in clause No. 1.0 of Section VI-2.0. Based on above bidder to guarantee the specific work cost as per Section-VI-8.0.

345. PC150/E/4003/ VI-8.0 7 of 11 Note-vii Maximum power available at the B.L of steam generation plant from Client shall be 8 MW during normal operation, accordingly LSTK Contractor shall select the drives of machine keeping in view relevant codes/ guidelines (IBR) requirement.

Limiting the power consumption within 8 MW for 2 Boiler units in operation with DeSox and DeNox system would be challenging and would like to discuss the same in the forthcoming meeting.

Total available power for the Steam Generation Plant is 8 MW. Bidder to design their system accordingly.

346. VI.-8.0 5 of 11 -- Stack gas Emission Limits: ……..the total NOx (from thermal as well as from fuel) at the outlet of SCR shall not exceed 100 mg/nm3 at 3-4% oxygen content in the flue gas on dry gas basis.

Owner may please note that as per latest notification Dt.28th June 2018 by MINISTRY OF ENVIRONMENT, FOREST AND CLIMATE CHANGE – All monitored values for SO2, NOx and Particulate Matter shall be corrected to 6% Oxygen, on dry basis. Hence Bidder proposes to use the same and guarantee Nox emission of 100mg/Nm3 at 6%O2 on dry basis at stack inlet.

Agreed. Amendment shall be issued.

347. VI.-8.0 5 of 11 --- Stack gas Emission Limits: Hg(mg/Nm3) – 0.03

Owner to kindly note That mercury content is not indicated in the coal analysis. In the absence of this value,it is clarified that no mercury control measures have been envisaged by the bidder.

Mercury (HG) content is 0.167 mg/kg of ROM Coal (feed-stoke). Amendment shall be issued.

348. --

--

--

Lime stone composition Works cost (Consumption of Raw material & Utilities) Guarantee: (2) Fluxant, MT (If required)

Owner may provide with lime stone composition for Boiler design/Guarantee. As fluxant consumption is part of guarantee Owner may kindly furnish

Purity range of fluxant will be 65% and above. However, performance guarantee will be based on 65% purity. Amendment will be issued.


Sl. No.


Page 40 of 42

VI-8.0 6 of 11 2.2 composition of limestone. 349. -- -- -- Saturated steam parameters at B.L. For design clarity, bidder would like

to know the process by which saturated steam is generated.

Saturated H.P. steam shall be from Ammonia Plant as already mentioned in NIT.

350. Section-VI - 10.0 Spare Parts Spares for VFD is not included in spare part list of tender document, hence not considered in bidder scope. Please confirm.

Spares for VFD already indicted in Section VI-10.0 (refer Sheet 19 of 34).

351. PC150/E/4003/SecVI-10.0

23 of 34 2.15 Flame scanners and optical pyrometer a) Electronics b) Detectors / sensors or spares with limited life a)10% subject to minimum 1 No. ofeach type. b)As required for 1 year operation or Min 2 Nos Complete flame scanner

Optical pyrometer was not called for in the scope of work for bidder and design basis for instrumentation. However, spares for optical pyrometer is indicated. Customer to clarify applicability of optical pyrometer as it is mentioned only in spares requirement.

Applicability shall be proposed by Bidder. The same shall be reviewed/commented by PDIL/TFL.

352. SPARES LIST PC150/E/4003/ SEC- VI - 10.0

12 of 34 2.13 (sl. 19) Insulation materials – 10% of as built as spares As per Industry practice, spares for insulation are not provided. Kindly review and confirm non-applicability.

As per NIT(Spare is required)

353. PC150/E/4003/SecVI-15.0 24 of 88 Vendor list HV Switchboard (11 kV & 3.3 kV) We have considered below additional make for 11KV & 3.3KV switchgear. - Larsen & Toubro Ltd

As per NIT.

354. PC150/E/4003/SecVI-15.0 25 of 88 Vendor list 415 V SWITCH BOARD(PCC/MCC/PMCC) We have considered all LV PMCC / PCC / MCC shall be OEM design and type tested report with their channel partner fabrication. Kindly confirm.

All 415 V Switchboard shall be of OEM only and not from Channel Partner.


5.0 CIVIL: 17.0 TMT BAR / REBAR a) SAIL b) TATA STEEL c) RINL d) SHYAM STEEL INDUSTRIES LIMITED

If possible, can other TMT make i.e. JSW steel, Vedanta Electrosteel be added in approved list.

As per NIT.


SECTION : VI - 15.0 VENDOR LIST 5.0 CIVIL:

9.1 FLASE CEILING / WALL CLADDING (ALUMINIUM STRIP/ TRAY TYPE) - a) INTERARCH BUILDING PRODUCTS(P) LTD. b) HUNTER DOUGLAS c) MASCOT OVERSEAS

Can we consider "Armstrong" make for false ceiling.

As per NIT.

357. PC150/E/4003/ SecVI 49 of 88 vendor list Description We Request following additional make


358. Conveyor system / feeder including Transfer Chutes, Bunkers /Hoppers Isgec 359. Conveyor Belting Hindustan / Somi / Northland /

Sempetrans / Dunlop 360. Belt Conveyor Components (Idlers & Pulleys) Rollwell / Avishkar / Kali 361. Gear Reducer & Gear Boxes Premium / Shanthi 362. Continuous Belt Weigher IPA / PreciaMolen 363. Electric Hoists Century / Grip / Rewa / Mangla /

Indeef 364. Metal Separator (Magnetic Separator) MCI / EMI / Electromag 365. Chain Pulley Blocks / Chain Hoists entury / Grip / Rewa / Indeef 366. Approval of Major SUB-

CONTRACTOR/ SUB-VENDOR

154/2464 195/2464

12.3.2

List of Vendors BHEL has a very well-established system of assessment, approval and enlistment of vendors in the Company's directory.

Bidder to note that Vendor List enclosed with the NIT shall only be followed. Bidder to also note that any other item for which vendors are not mentioned in NIT, successful LSTK bidder may furnish list of proven suppliers


Sl. No.


Page 41 of 42

MAKE OF MATERIALS VENDORS LIST SECTION : VI - VENDOR LIST

1277 / 2464 2377 / 2464

55.4.6 7.0 15.0

BHEL’s product directory vendors have supplied all types of material specifications to all thermal boilers including super critical upto 800MW rating which are still in operation without any complaints. Hence, BHEL’s directory vendors along with Customer approved vendor list furnished in Tender shall be considered during procurement.

with PTR subject to Owner’s/Consultant’s approval during detailed engineering.

367. VI-15.0 2 of 88 Vendor List All procurements shall be from BHEL approved vendors only. Our standard vendor list for major bought out items shall be submitted along with the bid. Vendor list can be finalized after award of contract

Procurement of Instrument items shall be as per vendor list provided with the tender

368. GENERAL - - - Apart from the vendor-list furnished alongwith the tender document, successful bidder will propose vendors during detailed engineering for supply and erection & commissioning.


369. Doc No. PC150/E/4003/SecVI-15.0 VENDOR LIST

Sheet 62 of 88 Page 2438 of 2464

Safety Valves & Thermal Relief Valves Upto 2500#

BHEL is not appearing in the approved vendor list for Safety Valves & Thermal Relief Valves Upto 2500#

BHEL to be included in the vendor list for Safety Valves & Thermal Relief Valves Upto 2500#

Please follow vendor list attached with tender.

370. PC150/E/4003/Section-VI-15.0 Rev-0

Sheet 17 of 88

Cl.3.0 Pumps for HP BFW Service Kindly include BHEL, Hyderabad in vendor list for supply of HP BFW pumps.

Vendor list shall be as per NIT


Sheet 17 of 88

Cl.3.0 Cooling Water Pumps (Vertical) Kindly include BHEL, Hyderabad in vendor list for supply of CWP pumps.



Sheet 17 of 88

Cl.3.0 Pumps for chemicals/acid/alkali/bfw/condensate use Kindly include BHEL, Hyderabad in vendor list for supply of condensate pumps.



88 pages General Vendor List Equipment for which vendor list are not provided in specification, we understand that such equipment if BHEL in-house manufactured then same shall be acceptable to customer. Further, in case not in-house manufactured by BHEL, then BHEL’s standard approved vendor list shall be applicable. Kindly confirm.

Bidder to note that Vendor List enclosed with the NIT shall only be followed. Bidder to also note that any other item for which vendors are not mentioned in NIT, successful LSTK bidder may furnish list of proven suppliers with PTR subject to Owner’s/Consultant’s approval during detailed engineering

374. GENERAL - - - Please furnish plant Climatic Condition i.e., site elevation, ambient temp, humidity etc. for design of various equipment e.g., compressor.

Refer Clause No. 4.0 of Section VI - 4.0 for site conditions. Average ambient temperature is 31.9 deg C is to be considered for PGTR. Any variation can be compensated by correction factor mutually agreed.

375. General -- -- Process Flow Diagrams Process Flow diagrams as required inside Steam generation Plant to be

Query is not clear. However, PFD development is in Bidder’s scope. Bidder shall furnish along


Sl. No.


Page 42 of 42

furnished. with Technical Bid. 376. General Measurement of Utilities and Steam All the feed materials input to Boiler (Coal,

fluxant, DM water, power utilities including HP Saturated steam coming from Ammonia-Urea plant for Super heating in Boiler etc), coming as input to the Boiler shall be measured and indicated on DCS. Similarly total export quantity of Steam and internal steam consumption shall be measured and indicated on DCS as output from Boiler.

dharmdeo

Rectangle

dharmdeo

Text Box

Tentative Battery limit A

dharmdeo

Rectangle

dharmdeo

Text Box

Tentative Battery limit B

LOADING PLATFORM (660m x 30m)

LINE No-1 LINE No-2 LINE No-3

LINE No-4

LINE No-5

LINE No-1

LINE No-2

LINE No-3

LINE No-4

LINE No-5

LOADING PLATFORM (660m x 30m)

PROPOSED TRACK HOPPER 250m LONG

AutoCAD SHX Text

FIRE STATION

AutoCAD SHX Text

ELECTRICAL

AutoCAD SHX Text

SHANKAR BHAGAVAN

AutoCAD SHX Text

STORE

AutoCAD SHX Text

GATE

AutoCAD SHX Text

MAHANADI COALFIELDS Ltd. AREA

AutoCAD SHX Text

BOUNDARY WALL (EXIST.)

AutoCAD SHX Text

VILLAGE KARADAPALLI

AutoCAD SHX Text

VILLAGE DEOJHARNA

AutoCAD SHX Text

EXISTING BOUNDARY WALL

AutoCAD SHX Text

TO FACTORY

AutoCAD SHX Text

HEAVY WATER PLANT

AutoCAD SHX Text

BUILDING

AutoCAD SHX Text

TECHANICAL

AutoCAD SHX Text

SWITCH YARD

AutoCAD SHX Text

132-KV

AutoCAD SHX Text

MATERIAL GATE (EXIST.)

AutoCAD SHX Text

EXIST.

AutoCAD SHX Text

BOUNDARY WALL (EXIST.)

AutoCAD SHX Text

(EXIST.UREA SILO)

AutoCAD SHX Text

FLARE STACK

AutoCAD SHX Text

[238 M x 42 M]

AutoCAD SHX Text

[330 M x 200 M]

AutoCAD SHX Text

RAW WATER STORAGE

AutoCAD SHX Text

GAS CLEANING &

AutoCAD SHX Text

PURIFICATION PLANT

AutoCAD SHX Text

[300 M x 200 M]

AutoCAD SHX Text

ASH /SLAG POND

AutoCAD SHX Text

CMD & COAL GASIFICATION PLANT

AutoCAD SHX Text

AIR SEPARATION UNIT

AutoCAD SHX Text

BRIDGE

AutoCAD SHX Text

WEIGH

AutoCAD SHX Text

AMMONIA PLANT

AutoCAD SHX Text

[ 100 M x 120 M ]

AutoCAD SHX Text

[ 200 M x 160 M ]

AutoCAD SHX Text

16

AutoCAD SHX Text

20

AutoCAD SHX Text

22

AutoCAD SHX Text

26

AutoCAD SHX Text

23

AutoCAD SHX Text

28

AutoCAD SHX Text

21

AutoCAD SHX Text

UREA PLANT

AutoCAD SHX Text

EXIST.

AutoCAD SHX Text

EXIST

AutoCAD SHX Text

EXIST

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

UREA PLANT

AutoCAD SHX Text

2

AutoCAD SHX Text

1

AutoCAD SHX Text

[66975 M2]

AutoCAD SHX Text

[215 M x 120 M]

AutoCAD SHX Text

STEAM GENERATION PLANT

AutoCAD SHX Text

14

AutoCAD SHX Text

[320 M x 255 M]

AutoCAD SHX Text

BAGGING PLANT

AutoCAD SHX Text

MECHANICAL

AutoCAD SHX Text

WORKSHOP

AutoCAD SHX Text

5

AutoCAD SHX Text

19

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

8

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

INST. AIR

AutoCAD SHX Text

12

AutoCAD SHX Text

GENERATION

AutoCAD SHX Text

EXIST

AutoCAD SHX Text

TRAINING WORK SHOP

AutoCAD SHX Text

TRAINING INSTIUTE

AutoCAD SHX Text

WORK

AutoCAD SHX Text

SHOPS

AutoCAD SHX Text

TEMPLE

AutoCAD SHX Text

CENTRAL

AutoCAD SHX Text

EXIST.

AutoCAD SHX Text

UNIT

AutoCAD SHX Text

7

AutoCAD SHX Text

TIME OFFICE

AutoCAD SHX Text

MAIN GATE

AutoCAD SHX Text

[170 M x 100 M]

AutoCAD SHX Text

AMMONIA STORAGE TANK

AutoCAD SHX Text

WITH FLARE STACK

AutoCAD SHX Text

(2 TANK )

AutoCAD SHX Text

11

AutoCAD SHX Text

MATERIAL GATE-1 (NEW)

AutoCAD SHX Text

29

AutoCAD SHX Text

EXT.

AutoCAD SHX Text

31

AutoCAD SHX Text

PLANT

AutoCAD SHX Text

30

AutoCAD SHX Text

MAINT.

AutoCAD SHX Text

OFFICE

AutoCAD SHX Text

SUBSTATION

AutoCAD SHX Text

33

AutoCAD SHX Text

W-100.0M

AutoCAD SHX Text

N-100.0M

AutoCAD SHX Text

N-200.0M

AutoCAD SHX Text

N-300.0M

AutoCAD SHX Text

N-400.0M

AutoCAD SHX Text

N-500.0M

AutoCAD SHX Text

N-600.0M

AutoCAD SHX Text

N-700.0M

AutoCAD SHX Text

N-800.0M

AutoCAD SHX Text

N-900.0M

AutoCAD SHX Text

N-1000.0M

AutoCAD SHX Text

N-1100.0M

AutoCAD SHX Text

N-1200.0M

AutoCAD SHX Text

N-1300.0M

AutoCAD SHX Text

N-1400.0M

AutoCAD SHX Text

N-1500.0M

AutoCAD SHX Text

N-1600.0M

AutoCAD SHX Text

N-1700.0M

AutoCAD SHX Text

N-1800.0M

AutoCAD SHX Text

N-1900.0M

AutoCAD SHX Text

E-000.0M

AutoCAD SHX Text

W-000.0M

AutoCAD SHX Text

E-100.0M

AutoCAD SHX Text

E-200.0M

AutoCAD SHX Text

E-300.0M

AutoCAD SHX Text

E-400.0M

AutoCAD SHX Text

E-500.0M

AutoCAD SHX Text

E-600.0M

AutoCAD SHX Text

E-700.0M

AutoCAD SHX Text

E-800.0M

AutoCAD SHX Text

E-900.0M

AutoCAD SHX Text

E-1000.0M

AutoCAD SHX Text

E-1100.0M

AutoCAD SHX Text

E-1200.0M

AutoCAD SHX Text

N-000.0M

AutoCAD SHX Text

N-100.0M

AutoCAD SHX Text

N-200.0M

AutoCAD SHX Text

N-300.0M

AutoCAD SHX Text

N-400.0M

AutoCAD SHX Text

N-500.0M

AutoCAD SHX Text

N-600.0M

AutoCAD SHX Text

N-700.0M

AutoCAD SHX Text

N-800.0M

AutoCAD SHX Text

N-900.0M

AutoCAD SHX Text

N-1000.0M

AutoCAD SHX Text

N-1100.0M

AutoCAD SHX Text

N-1200.0M

AutoCAD SHX Text

N-1300.0M

AutoCAD SHX Text

N-1400.0M

AutoCAD SHX Text

N-1500.0M

AutoCAD SHX Text

N-1600.0M

AutoCAD SHX Text

N-1700.0M

AutoCAD SHX Text

S-000.0M

AutoCAD SHX Text

E-000.0M

AutoCAD SHX Text

W-000.0M

AutoCAD SHX Text

E-100.0M

AutoCAD SHX Text

E-200.0M

AutoCAD SHX Text

E-300.0M

AutoCAD SHX Text

E-400.0M

AutoCAD SHX Text

E-500.0M

AutoCAD SHX Text

E-600.0M

AutoCAD SHX Text

E-700.0M

AutoCAD SHX Text

E-800.0M

AutoCAD SHX Text

E-900.0M

AutoCAD SHX Text

E-1000.0M

AutoCAD SHX Text

E-1100.0M

AutoCAD SHX Text

W-100.0M

AutoCAD SHX Text

CANTEEN

AutoCAD SHX Text

35

AutoCAD SHX Text

[50 M x 30 M]

AutoCAD SHX Text

SULPHUR

AutoCAD SHX Text

34

AutoCAD SHX Text

STORAGE

AutoCAD SHX Text

[170 M x 80 M]

AutoCAD SHX Text

DM WATER PLANT

AutoCAD SHX Text

9

AutoCAD SHX Text

WATER TREATMENT PLANT

AutoCAD SHX Text

10

AutoCAD SHX Text

[190 M x 100 M]

AutoCAD SHX Text

POLICE STATION

AutoCAD SHX Text

N-2000.0M

AutoCAD SHX Text

N-1800.0M

AutoCAD SHX Text

TO COAL GASIFICATION PLANT

AutoCAD SHX Text

TO STEAM GENERATION PLANT

AutoCAD SHX Text

AMMONIA TRUCK

AutoCAD SHX Text

LOADING SYSTEM

AutoCAD SHX Text

AMMONIA WAGON

AutoCAD SHX Text

LOADING SYSTEM

AutoCAD SHX Text

GATE

AutoCAD SHX Text

BOUNDARY WALL

AutoCAD SHX Text

[280 M x 270 M]

AutoCAD SHX Text

N

AutoCAD SHX Text

PLANT

AutoCAD SHX Text

NORTH

AutoCAD SHX Text

MAGNETIC

AutoCAD SHX Text

NORTH

AutoCAD SHX Text

WIND

AutoCAD SHX Text

DIRECTION

AutoCAD SHX Text

[27000 M2]

AutoCAD SHX Text

HOLDING POND FOR ETP

AutoCAD SHX Text

24

AutoCAD SHX Text

[110 M x 70 M]

AutoCAD SHX Text

ETP

AutoCAD SHX Text

25

AutoCAD SHX Text

STACKER CUM RECLAIMER

AutoCAD SHX Text

FLUXANT STORAGE

AutoCAD SHX Text

PETCOKE STORAGE

AutoCAD SHX Text

3

AutoCAD SHX Text

ROM COAL STORAGE

AutoCAD SHX Text

13

AutoCAD SHX Text

UNLOADING

AutoCAD SHX Text

T.T-2

AutoCAD SHX Text

T.T-3

AutoCAD SHX Text

ROM COAL STORAGE

AutoCAD SHX Text

STACKER CUM RECLAIMER

AutoCAD SHX Text

T.T-1

AutoCAD SHX Text

GROUND

AutoCAD SHX Text

HOPPER

AutoCAD SHX Text

FULLY COVERED

AutoCAD SHX Text

STORAGE

AutoCAD SHX Text

SEMI-CLOSED

AutoCAD SHX Text

STORAGE

AutoCAD SHX Text

ERH

AutoCAD SHX Text

CRUSHER

AutoCAD SHX Text

HOUSE

AutoCAD SHX Text

POND AREA

AutoCAD SHX Text

EXISTING

AutoCAD SHX Text

PUMP HOUSE

AutoCAD SHX Text

OPEN COAL STORAGE

AutoCAD SHX Text

THIS DRAWING IS THE PROPERTY OF PROJECTS & DEVELOPMENT INDIA LIMITED [PDIL] AND NOT TO BE COPIED OR REPRODUCED OR SHOWN TO THIRD PARTIES WITHOUT THE WRITTEN PERMISSION OF PDIL.

AutoCAD SHX Text

B

AutoCAD SHX Text

A

AutoCAD SHX Text

C

AutoCAD SHX Text

D

AutoCAD SHX Text

E

AutoCAD SHX Text

F

AutoCAD SHX Text

G

AutoCAD SHX Text

H

AutoCAD SHX Text

2

AutoCAD SHX Text

1

AutoCAD SHX Text

3

AutoCAD SHX Text

4

AutoCAD SHX Text

5

AutoCAD SHX Text

6

AutoCAD SHX Text

7

AutoCAD SHX Text

8

AutoCAD SHX Text

9

AutoCAD SHX Text

10

AutoCAD SHX Text

11

AutoCAD SHX Text

1

AutoCAD SHX Text

2

AutoCAD SHX Text

3

AutoCAD SHX Text

4

AutoCAD SHX Text

5

AutoCAD SHX Text

6

AutoCAD SHX Text

7

AutoCAD SHX Text

8

AutoCAD SHX Text

9

AutoCAD SHX Text

10

AutoCAD SHX Text

11

AutoCAD SHX Text

H

AutoCAD SHX Text

G

AutoCAD SHX Text

F

AutoCAD SHX Text

E

AutoCAD SHX Text

D

AutoCAD SHX Text

C

AutoCAD SHX Text

B

AutoCAD SHX Text

A

AutoCAD SHX Text

PROJECTS & DEVELOPMENT INDIA LTD.

AutoCAD SHX Text

NUMBERS

AutoCAD SHX Text

NOIDA

AutoCAD SHX Text

D E S C R I P T I O N

AutoCAD SHX Text

PC150-0000-0205

AutoCAD SHX Text

FILE :~

AutoCAD SHX Text

1 : 2200

AutoCAD SHX Text

SCALE :~

AutoCAD SHX Text

DRG. No.:~

AutoCAD SHX Text

SHEET 1 OF 1

AutoCAD SHX Text

CKD.

AutoCAD SHX Text

PPD.

AutoCAD SHX Text

REV.

AutoCAD SHX Text

APPD.

AutoCAD SHX Text

REFERENCE DRAWINGS

AutoCAD SHX Text

M/s. TALCHER FERTILIZER LIMITED

AutoCAD SHX Text

TALCHER, ANGUL DISTRICT, ODISHA(INDIA)

AutoCAD SHX Text

01.

AutoCAD SHX Text

GENERAL LAND DEVELOPMENT PLAN

AutoCAD SHX Text

DATE

AutoCAD SHX Text

REV.

AutoCAD SHX Text

PC150-0000-0205-R3

AutoCAD SHX Text

LOCATION :

AutoCAD SHX Text

TITLE :

AutoCAD SHX Text

CLIENT :

AutoCAD SHX Text

0

AutoCAD SHX Text

S.NO.

AutoCAD SHX Text

1

AutoCAD SHX Text

04.01.20

AutoCAD SHX Text

3

AutoCAD SHX Text

JPR

AutoCAD SHX Text

SS

AutoCAD SHX Text

UPT

AutoCAD SHX Text

REVISED AS MARKED

AutoCAD SHX Text

2

AutoCAD SHX Text

3

AutoCAD SHX Text

EXIST. HT LINE

AutoCAD SHX Text

EXIST. HT LINE

AutoCAD SHX Text

TO TALCHER RAILWAY STATION

AutoCAD SHX Text

EXIST. RAIL TRACK

AutoCAD SHX Text

T.T-4

AutoCAD SHX Text

MATERIAL GATE-2 (NEW)

AutoCAD SHX Text

EXISTING RAIL TRACKS

AutoCAD SHX Text

4

AutoCAD SHX Text

NEW BOUNDARY WALL

AutoCAD SHX Text

NEW BOUNDARY WALL

AutoCAD SHX Text

TEMPORARY MARKET CENTER

AutoCAD SHX Text

FERTILZER HIGHER SECONDARY SCHOOL

AutoCAD SHX Text

TRAINING HOSTEL

AutoCAD SHX Text

VINOD KENDRA

AutoCAD SHX Text

15

AutoCAD SHX Text

& PUMP HOUSE

AutoCAD SHX Text

(100M X 50M)

AutoCAD SHX Text

FIRE WATER STORAGE

AutoCAD SHX Text

ELECTRICAL DISTRIBUTION SYSTEM & EDG

AutoCAD SHX Text

17

AutoCAD SHX Text

[70 M x 255 M]

AutoCAD SHX Text

CONST. WATER STORAGE

AutoCAD SHX Text

FUEL OIL UNLOADING, STORAGE & FORWARDING FORWARDING AREA

AutoCAD SHX Text

COAL GASIFICATION PLANT

AutoCAD SHX Text

27

AutoCAD SHX Text

COOLING TOWER FOR

AutoCAD SHX Text

COOLING TOWER FOR

AutoCAD SHX Text

AMMONIA & AMMONIA STORAGE

AutoCAD SHX Text

6

AutoCAD SHX Text

COOLING TOWER FOR UREA

AutoCAD SHX Text

6

AutoCAD SHX Text

SPACE FOR FURUTE

AutoCAD SHX Text

[HOLD] NOTE-7

AutoCAD SHX Text

N-2312910.151

AutoCAD SHX Text

E-308680.833

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

GREEN BELT

AutoCAD SHX Text

BOUNDARY WALL

AutoCAD SHX Text

BOUNDARY WALL

AutoCAD SHX Text

EXISTING FACILITIES

AutoCAD SHX Text

%%ULEGEND%%U :~

AutoCAD SHX Text

ROAD FACILITIES [TO BE USED]

AutoCAD SHX Text

PROPOSED FACILITIES

AutoCAD SHX Text

NEW RAILWAY TRACKS

AutoCAD SHX Text

GREEN BELT AREA

AutoCAD SHX Text

SK

AutoCAD SHX Text

15.12.17

AutoCAD SHX Text

0

AutoCAD SHX Text

SS

AutoCAD SHX Text

UPT

AutoCAD SHX Text

SK

AutoCAD SHX Text

GENERAL REVESION

AutoCAD SHX Text

19.12.17

AutoCAD SHX Text

1

AutoCAD SHX Text

SS

AutoCAD SHX Text

UPT

AutoCAD SHX Text

SK

AutoCAD SHX Text

ISSUED FOR CONSTRUCTION

AutoCAD SHX Text

29.08.18

AutoCAD SHX Text

2

AutoCAD SHX Text

SS

AutoCAD SHX Text

UPT

AutoCAD SHX Text

1. ALL DIMENSION ARE IN MM AND LEVELS ARE IN M. UNLESS NOTED OTHERWISE.

AutoCAD SHX Text

NOTE:-

AutoCAD SHX Text

2. THE DRAWING SHOULD NOT BE SCALED,ONLY FIGURE DIMENSION ARE TO BE FOLLOWED.

AutoCAD SHX Text

3. THE RESPECTIVE RLS. SHALL BE RECKONED FROM THE PERMANENT BENCH MARK.

AutoCAD SHX Text

4. FELLING OF TREES/CLEARING OF JUNGLES/SHRUBS SHALL NOT BE TAKEN UP IN THE AREA EARMARKED FOR THE GREEN BELT, EXCEPT ROADS WHERE LAND SHALL BE GRADED PROPERLY.

AutoCAD SHX Text

EL.97.0OOM LVL.

AutoCAD SHX Text

LEGEND:-

AutoCAD SHX Text

EL.91.0OOM LVL.

AutoCAD SHX Text

EL.95.0OOM LVL.

AutoCAD SHX Text

EL.92.0OOM LVL.

AutoCAD SHX Text

EL.88.0OOM LVL.

AutoCAD SHX Text

EL.100.5OOM LVL.

AutoCAD SHX Text

EL.100.0OOM LVL.

AutoCAD SHX Text

EL.100.50M LVL.

AutoCAD SHX Text

EL.97.O0M LVL.

AutoCAD SHX Text

EL.95.O0M LVL.

AutoCAD SHX Text

SECTION A-A

AutoCAD SHX Text

A

AutoCAD SHX Text

A

AutoCAD SHX Text

EL.93.0OOM LVL.

AutoCAD SHX Text

PC009-0000-0001_R6

AutoCAD SHX Text

PLOT PLAN OF PROPOSED INTEGRETED COAL BASED FERTILIZER AND CHAMICAL COMPLEX

AutoCAD SHX Text

02.

AutoCAD SHX Text

TOPOGRAPHICAL & CONTOUR SURVEY DRAWING

AutoCAD SHX Text

SA/RCF/TALCHER/2017/TOPO-DWG_R2

AutoCAD SHX Text

3

AutoCAD SHX Text

N-1962.200

AutoCAD SHX Text

E-918.000

AutoCAD SHX Text

N-1962.200

AutoCAD SHX Text

E-743.600

AutoCAD SHX Text

N-1577.200

AutoCAD SHX Text

E-247.000

AutoCAD SHX Text

N-1577.200

AutoCAD SHX Text

E-0.790

AutoCAD SHX Text

N-1562.100

AutoCAD SHX Text

E-918.000

AutoCAD SHX Text

N-1122.100

AutoCAD SHX Text

E-1086.000

AutoCAD SHX Text

N-1255.170

AutoCAD SHX Text

E-918.000

AutoCAD SHX Text

N-54.200

AutoCAD SHX Text

E-1086.000

AutoCAD SHX Text

N-1365.600

AutoCAD SHX Text

E-228.085

AutoCAD SHX Text

N-1026.800

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-1289.800

AutoCAD SHX Text

E-0.790

AutoCAD SHX Text

N-1026.800

AutoCAD SHX Text

E-0.790

AutoCAD SHX Text

N-1562.100

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-712.800

AutoCAD SHX Text

E-0.790

AutoCAD SHX Text

N-611.900

AutoCAD SHX Text

E-0.790

AutoCAD SHX Text

N-455.865

AutoCAD SHX Text

E-20.800

AutoCAD SHX Text

N-79.200

AutoCAD SHX Text

E-144.800

AutoCAD SHX Text

N-395.300

AutoCAD SHX Text

E-144.800

AutoCAD SHX Text

N-961.200

AutoCAD SHX Text

E-927.800

AutoCAD SHX Text

N-318.800

AutoCAD SHX Text

N-1275.000

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-455.865

AutoCAD SHX Text

E-86.300

AutoCAD SHX Text

N-574.600

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-1275.000

AutoCAD SHX Text

E-712.500

AutoCAD SHX Text

N-612.500

AutoCAD SHX Text

E-712.500

AutoCAD SHX Text

N-318.800

AutoCAD SHX Text

N-79.200

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-395.300

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

E-712.500

AutoCAD SHX Text

N-435.100

AutoCAD SHX Text

N-180.000

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

N-574.600

AutoCAD SHX Text

E-86.300

AutoCAD SHX Text

E-927.800

AutoCAD SHX Text

E-927.800

AutoCAD SHX Text

N-54.200

AutoCAD SHX Text

E-712.500

AutoCAD SHX Text

N-1365.600

AutoCAD SHX Text

E-470.500

AutoCAD SHX Text

3

AutoCAD SHX Text

5. NO EARTH FILLING BUT ONLY CUTTING AND GRADING

AutoCAD SHX Text

BUND WALLS SHALL ALSO BE RETAINED.

AutoCAD SHX Text

SHALL BE DONE IN THE ASH POND AREA.

AutoCAD SHX Text

HOLD

AutoCAD SHX Text

HOLD

AutoCAD SHX Text

ISSUED FOR CONSTRUCTION

Documents

Sl. Reference of Tender Document Bidder’s Query PDIL/TFL’s ... · Sl. Reference of Tender Document Bidder’s Query PDIL/TFL’s ... ... plant