TIDEL Wastewater Vendor Name - Part 1B - Technical Specification

8/11/2019 TIDEL Wastewater Vendor Name - Part 1B - Technical Specification

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TIDEL Park Coimbatore Ltd., Sewage Treatment PlantPart 1B - Technical Specification

TIDEL PARK COIMBATORE LTD(A JV of TIDCO, ELCOT, TIDEL & STPI)

INTERNATIONAL TECHNO COMMERCIAL TENDERPART 1 B TECHNICAL SPECIFICATION

PROVIDING SEWAGE TREATMENT PLANT WORKS IN CONSTRUCTION OFBUILDING COMPLEX OF INFORMATION TECHNOLOGY PARK AT

VILLANKURICHI (SEZ AREA), COIMBATORE

DUE DATE FOR SUBMISSION: ON OR BEFORE 19th June, 2009 at 15.00 Hours

TO BE SUBMITTED TO:The Chairman and Managing DirectorM/s. TIDEL Park Coimbatore Ltd

(First Floor TIDEL Park)4, Rajiv Gandhi Salai,Taramani, Chennai - 600 113.Telephone No.: +91 44 22540500/501Fax No.: +91 44 22541744.

ARCHITECTS & ENGINEERS:

M/s C.R.Narayana RaoArch itects & Engineers#5/10, Karpagambal Nagar,Luz, Chennai- 600 004 INDIATel No: 044-24991676 (4 lines)

Fax No: 044-24991318.OWNERS ENGINEERS:

M/s TCE CONSULTING ENGINEERS LTD# 73/1, Sheri ff Centre,St. Marks Road,Bangalore 560001. INDIATel No: 080-66226000Fax No: 080-22274873.

BID SUBMITTED BY:

M/s._________________________

Address_____________________

____________________________

MAY 2009

C.R.Narayana Rao Owner s Engineers - TCEArchitects & Engineers

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TIDEL PARK COIMBATORE LTD(A JV of TIDCO, ELCOT, TIDEL & STPI)

PROVIDING DOMESTIC SEWAGE TREATMENT PLANT FOR MEMBRANEBIO REACTOR TECHNOLOGY IN CONSTRUCTION OF BUILDING COMPLEXOF INFORMATION TECHNOLOGY PARK AT VILLANKURICHI (SEZ AREA),

COIMBATORE

TECHNICAL SPECIFICATIONFOR DOMESTIC SEWAGE TREATMENT PLANT FOR

MEMBRANE BIO REACTOR TECHNOLOGY 400 KLD

1.0 DOMESTIC SEWAGE TREATMENT PLANT

1.1 GENERAL

The main source of effluent is wastewater resulting from Toilets, pantries, andwashrooms. The scope of work includes detail design, drawings, gettingapprovals from statutory bodies, coordinating during construction, erection,commissioning and obtaining best results for completely below ground domesticsewage treatment plant with electrical, mechanical and piping. (Treatment ofKitchen waste is not included in this scope of work)

The treated effluent should be fit to reuse for gardening, HVAC andFlushing Disposal purpose.

The work should be carried out on a turnkey basis covering a performanceguarantee of plant as per the standards committed for minimum ofTen years.

TURNKEY TENDER

Vendor to submit detail design, hydraulics, plan and section w ith detailequipment specs along with TENDER justifying each parameters.

Also vendor to submit pay back calculation, operation and maintenancecost sheet.

1.2 BASIC DATA ON RAW WASTE WATER (SEWAGE)

Total Suspended Solids (TSS) : 300 mg/litBOD5days : 300 - 400 mg/litCOD : 500 mg/lt

pH : 7.5 8.5Peak Factor : 2.5Inflow Time : 18 Hrs


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1.3 TREATED WASTE WATER QUALITY

As stipulated by State Pollution Control Board (PCB), the treated effluent qualityshall be within the following values for various parameters, for both present andfuture.

pH - 7.0 - 8.0TSS - NILBOD5days < 10 mg/litCOD


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Fine Screen (Automatic) Coarse bubble diffuser. Equalisation tank Pump Room Anoxic tank/Aeration tank/MBR tank. Chemical cleaning of membranes

Chlorinator Final tank Filter Press with screw pump Sludge holding tank Piping and cabling Units designed and proposed for LT panel

1.5 DESIGN CRITERIAThe STP shall be designed on the basis of wastewater flow and quality

parameters as in Para 1.2 & 1.3. Vendor to submit an offer for STP with completedesign and detail drawing. These values shall form the design criteria for design

a) Equalisation Tank (Balancing Tank)Retention time : Min 5.0 - 6.0 hours based on peak

hourly flow of raw sewage.

b) Aeration / Membrane Bio Reactor Tank

Influent BOD5 : 300 mg/litMLSS : 8000 12000 mg/litOxygen requirement : 2.0 kgs per kg of BOD

c) Membranes

Type : Spindle / Sheet - Immersed typePore size : 0.4 micronCasing material : ABSOperating : Suction 2 wayHousing : SS

AUTOMATION OF SYSTEM

It is required to automate the system completely as specified below with scadabased support,

Level transmitter at equalization tank connecting to PLC and scada

controlling the equalization pump and permeate pump. (Link between inletand out let)

Ultrasonic based Flow meter to monitor the flow to fine screen.

Electrically actuated valve at fine screen entry to control flow to fine screenwith link between level transmitter at screen and valve.

Level transmitter at anoxic /aeration tank to control / monitor level andpermeate pumps.


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Vendor to submit detail cost sheet for operation and maintenance, inclusiveof all consumables, man power and ele power charges for one year withtender.

Vendor to submit the pay back calculation sheet for above technology withCivil, M&E costs including O&M charges.

1.7 DETAILS OF CIVIL WORKS

Civil works (By civil contractor) carried out in the treatment plant are as belowwhich should be coordinated by STP vendor and vendor should furnish requiredlevels and details.

a. Coarse Bar Screen Chamberb. Fine screenc. Equalization Tankd. Anoxic/Aeration / MBR Tanke. Final tank

f. Working platform, staircase etc., as per drawingg. Works such as pipe / cable trenches, chambers, equipment foundations,

staircase headroom at entry of STP etc.,h. Plant room.

i. Sludge holding tank.

1.8 DETAILS OF PIPING WORK

Piping works including excavation, back filling, masonry / structural pipesupports, puddle flanges, concrete bedding, pipe specials and GM B/F Valves(Approved or Recommended make only) are all included in the scope of contract.

The quantity and sizes of the pipes shall be vendor design and piping drawingshall be submitted for consultant approval before execution or procurement.

All pipes laid in the plant shall be treated with two coat of anti corrosive paint andone coat of approved IS recommended color based on feeding scope of pipe.

1.9 GENERAL

The scope of STP vendor regarding Civil Works is coordinating necessaryhydraulic testing for water tightness/seepage as per relevant IS CODES FOR

ALL WATER RETAINING STRUCTURES and hydraulic levels of the units doneby civil contractor.

Scope of contract for piping includes construction of necessary masonry valvechambers min 900 x 900 wherever necessary, removable type MS paintedcovers and extension spindles for valves.

Make of all piping/Equipments/Motors/Cables and Pumps shall be clearly statedin the offer and shall be approved by Consultant before Supply & Installation.The decision of Consultant in this regard shall be final and binding on thesuccessful Contractor.


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All equipment GA drawings shall be submitted to Consultant for approval prior tofabrication/ ordering. The fabricated and brought-out equipments shall beinspected at Contractor Works by Consultant and shall be dispatched to site onlyafter obtaining clear dispatch instructions in writing from Consultant.

It is obligatory on the part of the intending bidder to visit the site of work prior tosubmitting the offer and familiarize himself with local/site /soil conditions,availability of men, Materials and Machinery for successful and timely executionof the works. No extra shall be paid in case Contractor fails to ascertain correctsite conditions before submitting the offer.

All MS hand railing/ladders shall be given two coats of corrosive resistant paintover a coat of red-oxide primer or approved make and shade, which shall bescope of civil contractor.

Any other item not specifically mentioned in this tender but is essential for properand successful completion, commissioning and running of the DSTP for its

commercial utilization is also to be included in the scope of contract.

Fresh water line shall be provided to STP area but should be coordinated withplumbing vendor.

STP vendor has to coord inate with Main cont ractor, Plumbing vendor,Electrical contractor, Project management/Builder/Client, Architect andConsultant to establish the plant and to run the plant successfully .

Battery Limits:

1. Sewage Inlet up to STP screen chamber

2. Treated water up to final sump in the STP3. Exhaust fan capacity and ducting up to terrace4. Electrical feeder up to LT panel.5. Fresh water line up to STP.

1.10 EQUIPMENT SPECIFICATION

a) Bar Screen

Type -1 : Manually cleaned withHandrake

Construction : In MS flats of size 20 x 6not more than 20mm c/cwith necessary MSflat 25 x 6 stiffeners.The whole unit shall be given 2coats of epoxy based paintover a coat of epoxy

based primer.


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1 no. MS hand rake shallalso be provided with GIpipe rod.

Type - 2 : Mechanically cleaned automatic

system

Construction : In SS flats with opening not morethan 3 mm with automatic cleaningsystem based on head loss.

b) Raw Effluent Pumps

Quantity : Refer: BOQ

Duty : To transfer Raw Effluentfrom Equalisation Tank to

Aeration tank./MBR tank

Type : Vertical submersible type pumps

Motor : Built in vortex pump

Material of Construction : Body and impeller in CI

c) Diffusers


Fine pore diffusers : Long Membranes of EPDM supportedon PVC pipe secured at the ends bySS clams and construction withnecessary accessories etc complete.

Coarse bubble diffusers : Pressed PVC pipe with holes on thesurface for air ejection withnecessary accessories etc complete(for equalisation tank and Finaltank)

d) Air blowers


Type : Twin lobe compressor


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e) Sludge Pumps


Duty : To transfer secondary sludgefrom clarifier to Aeration

Tanks & sludge thickener.

Type : Horizontal centrifugal non-clogSelf-priming, open impeller, pumps

Motor : TEFC Motor, with IP-55protection and suitable for400/440 V, 50 HZ A/c

Material of Construction : Body and impeller in CI

Accessories : Air cock with priming

funnel, Flexible Coupling withguard, Base frame, foundationbolts etc.,

f) Chlorinator

g) Chemical Cleaning pumps

h) Back wash pumpsPumps are applied to clean the membrane surface from organic and inorganicloading. Preferred chemicals are NaOCl and citric acid.

i) Suction pumpsSuction shall be applied to the header on top of MBR modules and it shall bebank type. Pressure shall be as per design calculation.

Details justifying the duty condition of pumps shall be submitted.

j) Filter press

Type : Automatic hydraulic closingMechanism and as per BOQ.

1.11 DETAILS OF ELECTRICAL WORKS

GENERAL SPECIFICATION OF EQUIPMENT:

a) 1 NO. LT Panel, cubicle type suitable for floor mounting and comprising incomingpower control switch, Ammeters, Voltmeter, Phase Indicating Lamps, MCBs andStarters for the feeders all complete. Also to be provided are two nos. Automatic


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Level Controller for actuating the Raw Effluent /Treated effluent. Necessary Automanual Selector Switches shall also be provided.

b) Local push button starters shall also be provided near the Aerator equipmentsand mounted in weatherproof enclosures.

c) Necessary power wiring by armoured PVC Cables or by PVC insulated wire inconduit from LT Panel to equipment motors shall be provided with necessary

tray/ support etc complete and internal lighting of entire DSTP Plant as shown inthe drawing.

d) Necessary earthing as per I.E. rules.e) Lighting shall be as per IS requirements and fixtures shall be PHILIPS make and

the make and size of cables used should be approved from consultant.f) Energy meter (approved make) should be provided in the panelg) 3 no spare feeder with MCB suitable for 5 HP shall also be provided in the LT

Panel.h) The switchboard shall be metal clad, totally enclosed, rigid, compartmentalized

design, floor mounting, air insulated, extensible cubicle type for use on mediumvoltage power, 3 phases 4 wire 50 cycles system.

i) The equipment shall be designed for operation in high ambient temperature and

high humidity tropical atmospheric conditions. Means shall be provided tofacilitate ease of inspection, cleaning, and repairs for use in installations wherecontinuity of operation is of prime importance.

STANDARDS:

Following equipments shall conform to the requirements of:

a) Air Circuit Breaker (ACB) - IS 13947 - 1,2 / IEC 60947 - 1,2b) Moulded Case Circuit Breaker (MCCB) - IS 13947 - 1,2/ IEC 60 947 - 1&2c) Contactors - IS 13947 - 1,4d) Miniature Circuit Breaker (MCB) - IS 8828 - 1996/ IEC 898 - 1995

e) Residual Current Circuit Breaker (RCCB) - IS 12640 - 1988 / IEC 1008f) HRC fuse link - IS 9224 and BS 8 :8g) Current Transformer - IS 2705 and IEC 185h) Potential Transformer - IS 3156i) Relay - IS 3231 & IS 8686 (For Static Relays)j) Indicating Instrument - IS 1248

CONSTRUCTION:

1. The switchboard shall be:a) Sheet steel enclosed, indoor floor mounted freestanding cubicle type.

b) Made up of the requisite vertical sections modular type which when coupledtogether shall form continuous switchboards.

c) Dust, vermin and damp proof and enclosure protection not less than IP 52.d) Each feeder/instrument compartment shall be provided with a hinged door

interlocked with MCCB/SFU inside the compartment such that door can only beopened when MCCB/SFU in off position.

e) Readily extendable as required by the addition of vertical sections after removalof the end covers.


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f) Switchboards shall have access to the feeders, bus bars, cable termination,cable alley, etc. as required.

2. Each vertical section shall comprise:a) A front-framed structure of rolled/folded CRCA sheet steel angle section of

minimum 3 mm thickness rigidly bolted together. This structure shall house the

components contributing to the major weight of the equipment such as circuitbreaker cassettes, fuse switch units, main horizontal bus bars, vertical risers andother front mounted accessories.

b) The structure shall be mounted on a rigid base frame of folded CRCA sheet steelof minimum 6 mm thickness and 75 mm height. The design shall ensure that theweight of the components is adequately supported without deformation or loss ofalignment during transit or during operation.

c) A cable chamber housing the cable end connections and power/control cableterminations. The design shall ensure generous availability of space for ease ofinstallation and maintenance of cabling and adequate safety for working in one

vertical / horizontal section without coming into accidental contact with live partsof the adjacent section.

d) A cover plate at the top of the vertical section, provided with a ventilating hoodwhere necessary. Any aperture for ventilation shall be covered with a perforatedsheet having less than 1mm diameter perforations to prevent entry of vermin.

e) Front and rear doors fitted with dust excluding neoprene gaskets with fastenersdesigned to ensure proper compression of the gaskets. When covers areprovided in place of doors generous overlap shall be ensured between sheetsteel surfaces with closely spaced fasteners to preclude the entry of dust.

3. The total height of the panel shall not be more than 2300 mm unless otherwisespecified and maximum height of switch operating handle shall not be more than1800mm from FFL. The total depth of the panel shall be adequate to cater for propercabling space.

4. Doors shall be of minimum 14-gauge sheet steel and covers/partitions of 16G sheetsteel. All sheet steel work forming the exterior of switchboards shall be smoothlyfinished, leveled and free from flaws. The corners should be rounded.

5. The Components in the switchboards shall be so arranged as to facilitate ease ofoperation and maintenance and at the same time to ensure necessary degree ofsafety.

6. Components forming part of the switchboards shall have the following minimumclearances:

Between phases - 25mmBetween phases and neutral - 25mmBetween phases and earth - 25mmBetween neutral and earth - 19mm


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When, for any reason, the above clearances are not available, suitable insulationbarrier / shielding shall be provided. Clearances shall be maintained duringnormal service conditions.

Creepage distances shall comply to those specified in relevant standards.

7. All insulating material used in the construction of the equipment shall be of non-hygroscopic material treated to withstand the effects of high humidity, hightemperature and tropical ambient service conditions.

8. Functional units such as circuit breakers, fuse switches, MCCBs, etc. shall bearranged in multi-tier formation except that not more than two air circuit breakersshall be housed in a single vertical section.

9. Metallic/insulated shrouding shall be provided within vertical sections and betweenadjacent sections to ensure prevention of accidental contact with:

10. Main bus bars and vertical risers during operation, inspection or maintenance of

functional units and front mounted accessories.

11. Cable terminations of one functional unit, when working on those of adjacentunit/units.

12.All covers providing access to live power equipment/circuits shall be provided withtool operated fasteners to prevent unauthorized access.

13. Provision shall be made for permanently earthing the frames and other metal parts ofthe switchgear by two independent distinct connections.

14. Only CRCA steel sheets shall be used for fabricating the cubicle.

15. Thickness tolerance for sheets shall be as applicable in relevant IS.

METAL TREATMENT AND FINISH:

1. After fabrication the panel shall undergo 7-tank treatment/sand blasting for removingGrease, Rust etc..

2. The panel shall be coated with zinc chromate primer (Applicable for outdoor panels).3. After coating of primer, the panel shall be coated with Epoxy powder with shade

RAL7032 prior to the approval of shade from Consultants.

1.12 TEST/TRIAL RUNNING AND COMMISSIONING

The Vendor shall have to test the each equipment used for the plant for at least72 hours continuous running with designed load and to the full satisfaction ofConsultants. Any defects found, has to be rectified by the contractor at his owncost immediately and within reasonable time to be decided by client.

Necessary Instruments, Gauges, Labour/Supervisory Staff, Laboratory analysisetc., are to be furnished/provided by the vendor at free of cost to client. .


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Vendor has to specify the value added services in his offer letter.

It is necessary for vendor to specify the minimum wastewater required forcommissioning of STP with TENDER.

1.13 COMMISSIONING/HANDING OVER

During trial runs as described above, the vendor shall satisfy Consultant in allrespects regarding the satisfactory quality of effluent, quality of materials,equipments and workmanship used in the plant.

Only after satisfying itself/ himself regarding the above points, client will take overthe plant and such date of taking over shall be deemed as date of completion forall purposes, guarantees, and payment terms mentioned else where in thistender.

The guarantee period described elsewhere in the tender should start from thedate of completion.

1.14 TRAINING OF OPERATOR

Vendor shall provide necessary training for operator during commissioningperiod. Vendor to certify the operator performance to carry over the plantmaintenance and operation efficiently after handing over the plant. Client / AMContractor to provide 3 operators during commissioning stage for trainingpurpose.

1.15 GUARANTEE

The under mentioned clauses shall govern in case of any contrary provisionsgiven elsewhere in the document.

Manufacturer's Guarantees

The manufacturers guarantee for design, workmanship, and performance for allbought out items shall be made available to the owner and shall be valid at leastfor the entire defects liability period.

In the event of failure of any particular equipment, which fails more than threeitems during the guarantee period as mentioned in clause below, the contractorshall replace at his own cost that equipment. Manufacturer's/Contractor'sguarantee, as mentioned in clause above, for such replaced equipment shall alsobe made available to the Owner and should be kept at least for one year from the

date of last replacement.

Performance Guarantee

The Contractor shall give guarantee for a period of Seven yearsfrom the date ofsuccessful commissioning of the treatment plant against design, defectivematerials, workmanship, performance and guaranteed effluent quality. In theevent the commissioning of the plant is not possible due to non-availability ofeffluent, contractor shall be issued mechanical completion certificate by


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client/consultant provided each equipment is tested satisfactorily as directed byConsultant. However, the contractor shall have to maintain the plant at his owncost, in such a case for a period for three months beyond which period, if he isrequired to maintain further, he will be paid extra at mutually agreeable rate.However, the Contractor shall carry out testing and commissioning of the plantduring the Defects Liability Period. Any defects found in the workmanship, the

Contractor at his own expense shall make materials or performance of the plantgood within the time specified by client/consultant.

For this purpose, the retention amount will be as follows:

10% of each RA bill until it reaches 5% of the total value of Contract shall beretained and also treated as performance guarantee. The Successful Tendereras per general conditions of contract shall be retained till the completion ofsatisfactory commissioning as stated above. The contractor at his own expenseshall start and commission, the plant and prove that it is giving satisfactoryservice and desired characteristic of the treated effluent, for two months beforehanding over the plant to the Owner. During this, the contractor shall train the

Owners operational stall without any extra cost to the Owner. The Contractorshall also have to guarantee the quality of the treated final effluent to meet thespecification mentioned already. In case the quality of treated effluent variesfrom what is required, the contractor shall rectify the plant at no extra cost so asto achieve the requisite performance guarantee and satisfactory commissioningof the plant to the client/Consultant. Despite the first opportunity given to thecontractor to effect rectification so as to achieve compliance, and In case thequality of treated effluent varies again from what is required, the contractor will begiven one more opportunity to rectify the plant and bring the treated effluent tothe required quality.

If the contractor fails in both opportunities to achieve the required result as

aforesaid, then the Architect/ Owners Engineers/ Owner will have the liberty toengage another agency to carry out whatever rectification necessary at thecontractors risk, cost and all expenses which will be recovered from any moneysdue to the Contractor and in addition, the retention money and Performancebond being forfeited by the Owner.

The contractor shall furnish the figures for average daily consumption of nutrients/ Chemicals, if any. All the above guarantees will be based on collection andanalysis of samples as mentioned in clause below.

Oxygenation Capacity of Diffusers.The contractor, if directed by Consultant, shall at his own cost prove the

Oxygenation capacity guaranteed by him for the diffusers provided by conductingOxygenation capacity tests on the unit by any standard and internationallyrecognised method to be approved by the Consultants.

1.16 MECHANICAL GUARANTEESThe Contractor shall guarantee for a period of one year for the failure of anyparticular part of the equipment. In the event of failure of any particular part ofthe equipment more than three times during the guarantee period, the Contractorshall replace it. In case it is found that the above mentioned failure is due to


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some other connected part of the equipment, that part shall also be rectified orreplaced by the contractor to avoid such failures in the future. The guarantee forsuch replaced parts shall be extended by one year from the date of lastreplacement.

1.17 COLLECTION AND ANALYSIS OF SAMPLES

The guaranteed effluent shall be based on complete analysis of samplescollected after stabilization of the plant.Min. 2 nos. Raw Effluent and 2 nos. Treated Effluent samples per month shall becollected and got analyzed at the Pollution control Board approved Laboratoryand should be submitted to consultant for approvalEfficiency of plant and process after secondary clarifier should be presented toconsultant by collecting sample at outlet of clarifier and analyzing the sample forBOD5 daysand TSS.

1.18 ANNUAL MAINTENANCE

The contractor shall include in the offer for maintaining the treatment plant

including all the consumables etc., qualified personnel shall be posted on the siteon shift basis, to take the sampling and carry out the tests. A complete recordhas to be maintained for all the tests carried out at regular intervals.

The Contractor shall employ a minimum of one operator per shift and onesupervisor during general shift based on 3 shifts/day. The senior chemist of thecontracting firm shall visit at least once a week for monitoring plant operation.

Also one Senior Mechanical Technician shall visit the plant for inspection andsupervision of maintenance of all equipments.

NOTE:

Data sheet to be duly filled before submission

Provide detailed specification with guarantee details of the equipments, for whichdata sheet is not filled.

Provide efficiency curves and catalogues for the equipments used.

Provide as built drawing after completion of project.

Vendor to furnish the manual for operation and maintenance with troubleshooting by his experience.

Vendor to furnish the list of spare parts, which are frequently required for troublefree operation.

Vendor to submit separate drawing and details for cleaning and backwashing ofmembranes.

Vendor to provide warranty of membranes with manufacturer certificate.


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DATA SHEET

Vendor to submit the following in addition with following sheets

1. Plant Capacity :2. Membrane type :3. Make :4. Pore size :5. Plan area :6. Depth :7. MLSS :8. Flux rate :9. Power requirement :

Equipment Unit Power Total connected power

Total Connected HP

10. Operational Cost (Approximately):

11. Air requirement for membrane :

12. Air requirement for biological unit :13. Cleaning system :14. Chemicals used :15. Suction pressure :16. Existing Plant Data17. Sludge generated in % :18. BOD committed at exit of MBR :19. Automation if any :20. Replacement Guarantee :21. Country manufacturer :22. Type of membrane connection to

support frame :23. Membrane material :24. Value added treatment :25. Guarantee, process :26. Sludge management :27. MBR comprises of :28. Similar experience :


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Chemicals quantity used for cleaning per day and frequency ofcleaning

Chemical dosing unit details as below

Membrane technical specs

CHEMICAL DOSING UNIT WITH METERING PUMP TANK:

Capacity in Litre :

Diameter :

Height :

Design flow :

Chemicals required at :

Design flow rate :

Holding period :

Dia of Inlet :

Dia of Outlet :

Dia of Drain :

MATERIAL OF CONSTRUCTION

Tank :

Valves :Piping :

METERING PUMP

Make :Model No :Construction detail :Duty Conditions :

Accessories IncludedWith the pump

:

Note:1) All information to be filled by Supplier2) This Data Sheet to be filled for each unit separately


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RAW PUMP

Make :

Type :

Flow rate lts/Sec : As per BOQ

Discharge pressure : As per BOQ

Material :

Casing :

Impeller :

Seal :

Motor :

Type :

Make :

Rating :

RPM :

Enclosure :

Class of Insulation :


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SLUDGE PUMP

Make :

Type :

Flow rate lts/Sec : As per BOQ

Discharge pressure : As per BOQ

Material :

Casing :

Impeller :

Seal :

Motor :

Type :

Make :

Rating :

RPM :

Enclosure :

Class of Insulation :


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LIST OF RECOMMENDED MAKES;


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1 Raw effluent pump Grundfos / KSB / Modi (sewage application)/equivalent make as approved by consultant

2 Sludge pumps Johnson / kirloskar / equivalent make asapproved by consultant

3 Membrane Zenon/Kubota/Hydranautics / equivalentmake as approved by consultant

4 Screw pumps Alfa / hydro prakav / equivalent make as

approved by consultant5 Filter press Dinshaw / hydro press / equivalent make as

approved by consultant6 Chlorinator ASIA LMI / equivalent make as approved by

consultant7 UV sterilizer TEFLON / equivalent make as approved by

consultant8 Automatic Screen Jash / equivalent make as approved by

consultant

9 Motors Kirloskar / siemens / ABB / equivalent makeas approved by consultant

10 i. Galvanised Pipes Tata / Jindal / equivalent make as approved

by consultant

11 ii GI fittings R Brand (ISI) /Unik /equivalent make asapproved by consultant

12 Gate valves/Non-return valves Leader / Zoloto/equivalent make as approvedby consultant

13 Foot valves Leader / Zoloto /equivalent make as approvedby consultant

14 Butterfly valve Inter valve / Slim Line /equivalent make asapproved by consultant

15 ACB / MCCB / SFU / LBS MERLIN GERIN / ABB / SIEMENS/equivalent make as approved by consultant

16 CONTACTORS / OLRS TELE MECHANIQUE / ABB / SIEMENS/equivalent make as approved by consultant

17 MCB / ELCB MERLIN GERIN / MDS / INDO ASIA/equivalent make as approved by consultant

18 MCB DB MERLIN GERIN / MDS / INDO ASIA/equivalent make as approved by consultant

19 DIGITAL METERS AE / MECO / ENERCON / equivalent makeas approved by consultant

20 Kwh / MDM / MDC METERS AE / ENERCON / L&T/ equivalent make asapproved by consultant

21 LED INDICATING LAMPS / PBS TEKNIC / VAISHNO / SIEMENS /equivalent

make as approved by consultant22 SELECTOR SWITCHES KAYCEE / SALZER/ equivalent make as

approved by consultant23 LIGHT FIXTURES & MOTION DETECTORS PHILIPS / WIPRO/ equivalent make as

approved by consultant24 SWITCHES / SOCKETS (MODULAR)

OUTLETS IN METAL BOXESANCHOR ROMA / MDS MOSAIC / ABB/equivalent make as approved by consultant


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BILL OF MATERIALS


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MECHANICAL VENTILATION


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TABLE OF CONTENTS

A. SECTION A - CENTRIFUGAL FANS FOR VENTILATION & EXHAUST SYSTEM

1.1 Scope

1.2 Codes & Standards

1.3 Construction Features

1.4 Drive Motor

1.5 Cabinet Centrifugal Fans

1.6 Noise & Vibration

1.7 Performance Guarantees

1.8 Data to be provided by the Vendor after award of work

1.9 Technical requirements for Toilet Exhaust Fans

SECTION B - SHEET METAL DUCTING

2.0 GENERAL

2.1 MATERIAL

2.2 THICKNESS OF SHEETS

2.3 LAYOUT OF DUCT

2.4 JOINTS

2.5 ELBOWS & BENDS

2.6 SUPPORTS

SECTION C - DAMPERS & AIR TERMINAL DEVICES

3.1 VOLUME CONTROL DAMPERS

3.2 AIR TERMINAL DEVICES


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SECTION 15731

EQUIPMENT SPECIFICATIONS FOR CENTRIFUGAL FANS FOR VENTILATION &

EXHAUST SYSTEM

1.1 SCOPE

This specification covers the general design, materials, construction features,

manufacture, shop inspection and testing at manufacturers works, delivery at

site, handling at site, erection testing, commissioning, performance testing and

handing over of Centrifugal Fans of Ventilation and process plants.

1.2 CODES AND STANDARDS

The design, materials, construction, manufacture, inspection, testing and

performance of centrifugal fans shall comply with all currently applicable statues,

regulations and safety codes in the locality where the equipment is to be

installed. The equipment shall also conform to the latest applicable Indian or

equivalent standards. Other international standards are also acceptable, if these

are established to be equal or superior to the listed standards. Nothing in this

specification shall be construed to relieve the VENDOR / CONTRACTOR of this

responsibility.

1.3 CONSTRUCTION FEATURES

1.3.1 CASING

The casing shall be of welded construction, fabricated from heavy gauge

material. It shall be rigidly reinforced and supported by structural members. The

seams shall be permanently sealed air tight. Split casing shall be provided on

larger sizes of fans as per manufacturing standard or if specified in technical data

sheets.


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1.3.2 IMPELLER

The impeller shall have die formed blades welded to the rim and back plate. Rim

shall be spun to have a smooth contour. Shaft sleeves shall be provided, if

necessary. If required, intermediate stiffening rings shall be provided. The

impeller shall be statically and dynamically balanced.

1.3.3 GENERAL

1.3.3.1 Belt driven fans shall be provided with V belts, V-belt pulleys and belt

guards.

1.3.3.2 Pulleys shall have minimum two (2) grooves to prevent start-up failure

and premature belt failure. Pulleys shall be statically and dynamically

balanced. Belts shall have a minimum service factor of 1.5.

1.3.3.3 Common base frame for belt driven fans shall be with adjustable rails

for motors.

1.3.3.4 Bolts, nuts and washers used shall be of non-corrosive material and of

superior quality.

1.3.3.5 Bearings shall have minimum life of 50,000 hours.

1.4 DRIVE MOTOR

The motor shall be as per IS: 325 and with class "F" insulation, totally enclosed

fan cooled, horizontal induction foot mounted type and rated not to draw starting

current more than 6 times normal running current. Fan motors shall be suitable

for 415 volts, 50 cycles, 3-phase, squirrel - cage, totally enclosed fan cooled with

IP-55 protection. Motor shall be selected for quite operation and the speed of the

motor shall not exceed 1400 RPM. Drive to fan shall be provided through belt-

drive arrangement. Belts shall of the oil-resistant type. Fan motor shall be

suitable for variable speed by variable frequency drive application. . The motor


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shall be capable of handling the required starting torque of the pumps. Speed of

motor shall be compatible with the speed of the pump. The cooling fans shall be

directly driven from motor shaft. Motor situated outdoors or exposed to the

weather shall be weather protected. Motors shall be enclosed type and shall

have dust tight construction with suitable means of breathing and of drainage to

prevent accumulation of water from condensation. Drain holes shall exclude

bodies greater than 6mm diameter.

All components shall be of adequate mechanical strength and robustness and

shall be constructed of metal unless otherwise approved. All motors shall be

dynamically balanced.

The enclosure shall be designed to provide an effective sealing between the

primary and secondary air circuits. Motor winding shall be vacuum impregnated

with heat and moisture resistant varnish glass fiber insulated. Two independent

earthing points shall be provided in accordance with IS:3043 on opposite sides of

the motor for bolted connection. The cable boxes and termination shall be

designed to enable easy disconnection and replacement of cables.

(Motor should be part of scope with manufacturer & should not be supplied

separately by ACMV Contractor)

1.5 CABINET CENTRIFUGAL FAN

Fan contained within the cabinet shall be licensed to ear the AMCA Air

and Sound Certified rating seal. Fan shall be DIDW forward or

backward curved with fan scroll, belt drive or direct drive assembled

within a cabinet. Cabinet shall be constructed of Galvanized Steel

material. Cabinet shall be Panel Construction assembled together by

means of fasteners for ese of dismantling for service and maintenance.

Welded cabinets are not acceptable. Cabinet shall be capable of taking

on added acoustic insulation, if required to meet the acoustic noise

levels specified.


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1.6 NOISE AND VIBRATION

Noise level produced by any rotating equipment individually or

collectively shall not exceed 65 dB (A) measured at a distance of 1.5

meters from the source in any direction. The overall vibration level shall

be as per zones A and B of ISO 10816-1. Balance quality requirement

shall be G 6.3 conforming to ISO 1940/1.

1.7 PERFORMANCE GUARANTEES

Performance parameters to be guarantee by the VENDOR /

CONTRACTOR and tolerances permitted shall be as indicated in

specifications. Bidder shall confirm acceptance of these by indicating

values in data sheet attached along with the document. Fan or any

portion thereof is liable for rejection, if it fails to give any of the

guaranteed performance parameters.

Bidder to note that all fan performance curves shall be AMCA certified.

Contractor shall also submit corrected performance curves for the fan

considering the as installed condition of the fan at site.

1.8 DATA TO BE FURNISHED BY THE VENDOR / CONTRACTOR AFTER

THE ISSUE OF PURCHASE ORDER / AWARD OF CONTRACT

1. Schedule of drawings and documents to be submitted for

review, approval and information with submission dates.

2. Quality Assurance Plan (QAP).

3. General arrangement and section drawing with all dimensions

and complete part list with codes and materials of construction.

This drawings shall include all data indicated in technical data

sheets.


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4. Foundation drawing with static and dynamic loads, unbalanced

forces and moments, if any, pocket details . etc.,

5. Drawing showing fabrication and constructional details of the

fan.

6. Fan rating chars or tables with selection marked.

7. Performance curves for fans with duty point marked (AMCA

Certified, as well as installed condition at site).

8. Torque-speed curve for fans.

9. Erection, operation and maintenance manual with lubrication

schedule.

1.9 TECHNICAL REQUIREMENTS (Exhaust & Fresh air Units)

Sl.

No

Description EXHAUST UNIT FRESH UNIT

01 Area Serving STP STP

02 Type of Unit Necessary test

certificates should be attached for

AMCA Certification.

Double Skin Cabinet

Type- DIDW Forward

Curved Fan with

AMCA Certification

Double Skin

Cabinet Type-

DIDW Backward

curved Fan with

AMCA Certification

03 Total air flow rate cfm 12000 Cfm 12000 Cfm

04 Exhaust air qty / Fresh air qty 10000 Cfm 10000 Cfm

05 Fan external static pressure mm

wg. Total static should be

calculated at filters in dirty condition

& not at moderate condition.

30 mm 30 mm


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06 Suggested Fan motor KW 7.5 KW 5.5 KW

07 Type of fan motor TEFC Squirrel Cage TEFC SquirrelCage

08 Rough Filter Required Required

09 Noise level

10 a) At the outlet of the fan 70 dB A 70 dB A

11 b) Any where around the unit at 1.5

M distance

65 dB A 65 dB A

12 Quantity ( Nos ) 1 1

13 Fan Outlet Velocity - m / sec 8 to 8.5 m/sec 8 to 8.5 m/sec


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SECTION-2 15800 SHEET METAL DUCTING WORKS

TECHNICAL SPECIFICATIONS FOR SHEET METAL DUCTING WORKS(FABRICATION AS PER IS STANDARDS)

FABRICATION OF DUCT AS PER IS STANDARDS WITH A PRESSURE OF 500 PA

2.0 GENERAL

This section involves the supply, fabrication and installation of Site fabricatedsheet metal works, installation procedures, leak testing of ducts, air distributionsystem like grilles & diffusers, flexible connection, volume control dampers, freshair louvers etc.

Sheet metal ducting required for the project is shown in drawings forming part ofthese specifications. These drawings indicate the duct sizes and configurationrequired to meet design flow requirements and also to provide the Contractorwith necessary data for bidding; they are not meant to serve as working drawings

which will have to be prepared by the successful contractor, giving due attentionto the structural features of the building and to other site requirements. Drawingsso prepared shall be subject to the approval of theconsultants/Architect. No extra charges shall be payable to the Contractor forchanges from tender drawings necessitated by above factors or for any otherreasons whatever.

Dimensions of duct sections are inside dimensions of bare ducts, where ductsrequired to be lined or insulated on the inside surface, these dimensions will haveto be enlarged so that the cross sectional area is not reduced as compared tothose indicated in the drawings.

All civil works involved including the drilling of holes for fixing the grip bolts andany chipping and finishing of the ceiling/roof slab, if found unavoidable, shall becarried out by the successful contractor at no extra cost.

2.1 MATERIAL

Sheet metal used for ducting shall be plain galvanized sheets conforming tograde ISS 655. Only new, fresh, clean and bright GI sheets shall be used. Thegalvanization on the sheets shall not be below 150 grams per sqm. TheOwners/Architect reserve the right to reject-summarily-sheets not meeting theserequirements.

2.2 THICKNESS OF SHEETS

The thickness of the sheets to be used for rectangular ducting shall be as follows

Maximum size of the duct mm Thickness - mmUpto to 750 MM 0.63 MM751 to 1500 MM 0.80 MM1501 to 2250 MM 1.00 MM


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2251 & above 1.20 MM

2.3 LAYOUT OF DUCTS

General layout of ducts may be taken from the drawings but this section isresponsible for avoiding interfacing with other sections not specifically shown on

the drawings. Actual measurements shall be taken at site before ductwork isfabricated.

Any necessary changes or additions to layout of the duct work to accommodatestructural, duct, piping, electrical or equipment conditions etc., where opening inthe wall / roof for duct work have been provided by others, make full use of suchopenings by fabricating duct work to fit them or if necessary provide offsets andtransitions to suite location of ducts and may be altered if changes is madebefore installation.

Where building conditions require duct shape to modify, ducts must have samecross sectional area indicated in the drawing and width of the duct shall not

exceed 6 times depth except with special approval.

2.4 JOINTS

The fabrication of the ducting including details of transverse joint connections,bracing, seams, etc., for longitudinal joints, etc., will be generally as per ISS-655-1963; the intent being to obtain duct pieces that are robust and rigid enough topreclude flutter, buckling, etc., and to avoid air leakages.

For duct - to - duct joints MS angle iron flanges with neoprene gasket shall beused. Irrespective of the size the ducts, angle iron flanges shall be only used forduct-to-duct joints & no sheet metal joints shall be acceptable.

All duct joints shall be made tight and the interior surfaces shall be smooth.Necessary gaskets of rubber or similar material shall be used to secure tightnessof joints.

2.5 ELBOWS & BENDS

Elbows, bends, offsets, etc. should be fabricated with a width to radius ratio ofnot less than 1.0 to 1.5. Alternately, turning vanes should be provided at intervalsso chosen that the aspect ratio of the various sections so formed by the vaneswill be at least five.

Turning vanes shall be provided at branch take-offs and collars whereverpossible. Similarly, straightening vanes shall be provided in all the collars unlessand except in cases where conditions at site do not permit their installation.

2.6 SUPPORTS

All supports for ducting shall be provided by the contractor. MS angles, rods andother sections shall be used as required for the purpose. The supports shall be


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taken independently to the building structure support. All bolts, nuts, rivets,washers, etc., used for duct joints shall be of GI and not MS. All MS angles, flats,etc., used for flanges, stiffening, etc., shall be finished with two coats of

Aluminium paint. These requirements shall apply to supporting arrangements /members also.

Minimum thickness of structural members employed for supports shall be as perIS 800. Where ducting is supported from ceiling/roof slab, Anchor grip bolts shallbe used to fasten the suspension rods to the ceiling/roof slab.

The distance between the two supports shall not be more than 1.5 meter.

All civil works involved including the drilling of holes for fixing the grip bolts andany chipping and finishing of the ceiling/roof slab, if found unavoidable, shall becarried out by the successful contractor at no extra cost

Duct SilencersMaterial

The outer casing shall be out of min. 22G galvanized steel in accordance withASHRAE recommendations for high-pressure rectangular ductwork. Seamsshall be lock formed on Pittsburgh lock machine.

Interior elements of silencers shall be out of min. 22 G galvanized perforatedsteel. The inner side of the perforated sheet shall be backed by R P Tissue toprevent fibre fly over.

Acoustic fill shall be fibre glass (not mineral wool) of density not less than 40Kg/m2 sufficient to obtain specified acoustic performance and shall be packedunder 10% compression to eliminate voids due to vibration and settling.

Material shall be inert, vermin and moisture proof.

All material of construction and acoustic fill shall be incombustible as per IS3144.

Airtight construction shall be provided by use of non-hardening duct sealingcompound at site by the air-conditioning contractor.

Acoustic Performance

Silencer acoustic ratings shall include insertion loss and self-noise powerlevels and shall meet or exceed minimum performance specified by the

Acoustical Consultant. Contractor shall provide computer selection for thesilencer supplied at site, which indicates db reduction at different octave Bband frequency.

A. Aerodynamic Performance

Static pressure drop through silencers shall not exceed those listedin the silencer schedule at the indicated airflows.


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B.Transitions

Testing

After completion all duct systems shall be tested for air leakage.

The entire air distribution system shall be balanced to supply the air quantities asrequired in the various regions and rooms to maintain the specified room conditions.The final balance of air quantities and its temperatures through each grille, register ordiffuser shall be tested and recorded as specified in Section Test Readings andsubmitted to the project manager for approval.


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SECTION 3

3.0 VOLUME CONTROL FIRE DAMPERS & AIR TERMINAL DEVICES

3.1 VOLUME CONTROL DAMPERS

Provide splitter damper in each supply take-off. Make turning vanes,dampers, deflectors, and splitters of same material of ducts. Splitters shallbe full depth of branch duct and 1 1/2 times branch width.

Dampers shall be placed in ducts and at every branch of supply or returnair duct connection whether or not indicated on the drawings, but shall beprovided for the proper volume control and balancing the system.

All duct dampers shall be made out of MS channels with robustconstruction and tightly fitted. They shall be provided with suitable links,levers and quadrant as required for their proper operation, control orsetting to any desired position. Dampers and their operating devices shallbe made robust, easily operate and accessible through suitable accessdoors in the ducts. Every damper shall have clear indication showing thedamper position at all the times. Dampers shall be placed in ducts and atevery branch (whether or not indicated on the drawings) for the propervolume control and for balancing the system.

3.2 AIR TERMINAL DEVICES

3.2.1 GENERAL

Provide Air Terminal Devices of sizes & type as shown in the drawings.All the accessories like adapter box with an extended round collar toconnect the flexible duct as shown in the drawings shall be within in thescope of contractor.

All supply and return air grilles and diffusers shall be as per the approvedlist furnished in the document. Consultants / Project Managers reservesright to choose the best. The grille shall be provided with powder coatedpaint of approved color. Further, the contractor shall submit a sample ofgrilles & diffusers for the approval.


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3.2.2 MATERIAL

All air terminal devices mentioned in the tender documents / drawingsshall be made out of extruded aluminum sections with very high qualityfinish. Grilles & diffusers shall be of extruded aluminium from hard stock

free from pits and spots joints shall be hairline. The color of powder-coated finish shall be as per Unisys/Project Managers approval.

3.2.3 SIZING

Grilles / Diffusers shall be sized within limits of sound pressure level NC-32 curve as a typical room having average room attenuation of 8 dB.

3.2.4 CONSTRUCTION

Supply air grilles shall be 15/30-degree deflection & of Powder coatedextruded aluminium construction. They shall be complete with Volumecontrol dampers of aluminium mounted directly on grilles. The vanes atthe front shall be horizontal while those at the rear shall be vertical. Thewidth of the perimeter flanges shall be 32 mm. The vanes shall be 3 mmthick and 25 mm deep.

Return air grilles shall also be Powder coated extruded aluminiumconstruction. They shall incorporate horizontal vanes, which shall befixed. The perimeter flanges shall be 32-mm width. The vanes shall be 3mm thick and 25 mm deep. The pitch of vanes shall be 20 mm.


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APPROVED MAKES OF THE FAN1. NADI

2. KRUGER

3. NICOTRA

APPROVED MAKES OF THE MOTOR1. ABB

2. SIEMENS

3. GEC

APPROVED MAKES OF GI SHEET

1. TATA

2. SAIL

3. JINDAL

APPROVED MAKES OF AIR TERMINAL DEVICES

1. RAVISTAR

2. AIRMASTER

3. CARYAIRE

Documents

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