· Format No. EIL-1641-1924 Rev.1 ... guarantee of the Tower on Turnkey basis as per scope of ... Design, engineering & supply of piping of all chemical dosing

SCOPE OF WORKS COOLING TOWER & CWTP PACKAGE

(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

Page 1 of 6

2 21.12.17 UPADDTED & ISSUED FOR BIDS SJ JKU SKN

1 12.09.17 UPADDTED & ISSUED FOR BIDS SJ JKU SKN

0 26.12.15 UPADDTED & ISSUED FOR BIDS PS JKU DDB

A 20.08.15 ISSUED FOR BIDS PS JKU DDB

Rev. No

Date Purpose Prepared

by Checked

by Approved

by

Format No. EIL-1641-1924 Rev.1 Copyright EIL – All rights reserved

SCOPE OF WORKS

COOLING TOWER & CWTP PACKAGE

(PLOT PLAN & WATER)

CLIENT: ASSAM PETROCHEMICALS LIMITED

PROJECT: 500 TPD METHANOL AND 200 TPD FORMALIN PLAT


(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

Page 2 of 6


1.0 SCOPE OF WORK

The scope of work of Cooling Tower & CWTP Package Tender shall cover design, detailed engineering, procurement, supply of all materials, equipments, installation, construction, fabrication, erection, manufacture, receipt, storage, conservation and preservation of all materials at site, handling at site, assembly, painting, testing, Commissioning of the entire system within package battery limit including testing and trial runs for 30 days and removal of unserviceable material, performance guarantee test run for 72 hours and guaranteeing of Cooling Water system comprising of one no. Cooling tower (CT-1) and associated facilities, each cooling tower system consisting of cooling Tower and Chemical dosing systems for Cooling Water treatment, including all mechanical, electrical and instrumentation works including training of Owner’s operating staff for a period of 30 days during trial runs and commissioning, including monitoring, running and maintenance of Chemical dosing system for six months of operation after commissioning, Supply of chemicals and consumables including first fill required for equipment & lubricants required during commissioning, trial runs for 30 days, performance guarantee test run and six months consumption of plant operation after completion of 30 days of trial run post commissioning and fulfilment of performance guarantee of the Tower on Turnkey basis as per scope of work, P&IDs, drawings, data sheets, standards, specifications etc.

1.1 DETAILED SCOPE OF WORKS & SYSTEMS

- Each Cooling Tower shall comprise of nos. of cells as per process data and P&ID.

- Following one (1) Cooling water systems are covered under this package contract.

Cooling Tower -1 (CT-1) (2 nos. of cell working + 1 Stand by)

Each of the above cooling tower system shall consist of following but not limited to:

a. Cooling tower, basin and cold water channel

b. Cooling water treatment and dosing system consisting of Formulation dosing,

Polymeric dispersant dosing, Biocide dosing, chemical dosing system such as

H2SO4 dosing, Chlorine di-Oxide dosing system & side stream filters

c. Cooling Water Treatment Plant (CWTP)

d. Contractor shall engage sub vendor for “design of chemical dosing system for

cooling water treatment plant.”

e. 3D modelling of cooling tower and other facilities within Package B/L including all

piping, equipments, structures etc.

f. All mechanical, instrumentation, electrical and other civil works.

Refer matrix for detailed division of scope of works and supply given elsewhere in bid

document.

1.2 BATTERY LIMIT CONDITIONS

The battery limits of contractor's scope of work are given in P&IDs No. A672-79-41-012-

1111/1112 & A672-012-17-44-1001 and scope limit drawing for Cooling Tower Package

drawing no. A672-012-17-44-08701.

1.3 COOLING TOWER

The scope of work shall cover:-


(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

Page 3 of 6


a. Design, detail engineering, supply of all materials, erection, construction of

mechanical induced draft, counter flow FRP cooling tower with PVC film type

fill having no. of cells as per Process data sheet/ P&IDs for meeting Project

requirements.

b. The cooling tower cells shall be so designed so that each of them can be

repaired, maintained and cleaned while the other cells are in operations. Oil

skimming arrangement in the channel at entry for sump shall be provided to

remove floating oil to OWS.

c. The basin shall be provided with an overflow and desludging arrangement from

each cell, which shall be suitably connected, to the nearest storm water drain.

Construction of basin is in the scope of others. Cooling tower Package

contractor’s scope includes sizing, hydraulic design and preparation of General

arrangement drawing of basin.

d. Partition wall shall be provided from the basin bottom to the top of basin and also

partition shall be provided from top of basin to bottom of fan deck. End of cooling

tower shall be kept closed.

e. A chain pulley block of suitable capacity with all necessary lifting arrangement

shall be provided for maintenance work on cooling tower fan, gearbox and motor

as per specifications given elsewhere in bid document.

f. The cold water from the basin shall be conveyed through a sluice gate to the

sump through cold-water channel covered with pre-cast RCC slabs. The sluice

gate (as per IS: 3042) shall be provided at a level such that full flow occurs

through the gate at minimum water level. Construction of cold water channel is in

the scope of others. Cooling tower Package contractor’s scope exclude sizing,

hydraulic design and preparation of General arrangement drawing of cold water

channel considering the water requirement at cooling tower cells. The erection of

sluice gate and construction of Cold water channel is by others.

g. Return hot water from various units etc. is combined into a common line and shall

be laid under ground from battery limit up to cooling tower and individual return

water riser pipes shall be provided for each cooling tower cell and further taken

into the cooling tower as per vendor's design requirements for each cell. Main

Cooling water return header and riser pipe to each cell upto Battery limit shall be

provided by others. Contractor shall provide expansion bellow in the riser pipe

before entering to Cooling Tower cell. Corrosion probe and corrosion coupon

shall be provided by others in the return header near the cooling tower. Vendor to

finalize Cooling Tower height and fan deck height according to the pressure

available at grade level near cooling tower (as given in process data sheet) &

design the hot water riser to suit the battery limit pressure conditions. Vendor to

confirm the return header pressure in the offer. The procurement & erection of

cooling water return header and the hot water riser up to the flange at the top is

by others. However, the modelling of the same to be carried out by Cooling tower

contractor.

h. Contractor to note that area available for proposed cooling tower, cold water

channel, and CWTP is marked on scope drawing and no extra space shall be

2


(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

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made available to put up same. Contractor is required to visit site and make

himself aware of actual site conditions.

i. Package vendor to note that FPR columns for supporting cooling tower

shall be provided at 2m x 2m grid (fixed). Pedestal for supporting FPR

column is under construction at site at 2mx2m grid. Elevation of pedestal is

also fixed in attached structural drawing A672-099-81-41-06991. SS anchor

Bolts for fixing of FRP column with RCC pedestal is in Package vendor

scope. Grouting after fixing and alignment of cooling tower is in Package

vendor scope.

j. Package vendor to note that location of riser pipe connected to cooling

tower cell is fixed at the center of each cell.

k. Package vendor to design the superstructure of cooling tower based on

following General arrangement and structural detailed drawing enclosed

with bid.

• A747-099-81-41-06991

l. Any other work required as per scope drawing and P&ID and required for the

completion of the job in all respects.

1.4 PIPING WORKS

a. Supply and erection of piping within the battery limits of cooling tower as per the

scope drawing and P&ID shall be in the scope of the CT contractor including,

design, engineering & 3D modelling of the same.

b. Design, engineering & supply of piping of all chemical dosing system as per

process requirement.

c. All other works not exclusively mentioned in the tender document, but are

necessary to complete the system in all respects with respect to process

requirements, P&ID, Scope drawings and data sheet etc. shall form a part of total

scope of work.

1.5 COOLING WATER TREATMENT SYSTEM

a. The bidder scope of work covers supply, design, detail engineering, procurement,

fabrication, supply, transport, handling, erection, mechanical, electrical and

instrument works including testing, commissioning & guaranteeing of cooling

water treatment and dosing system consisting of Formulation dosing, Polymeric

dispersant dosing and Biocide dosing, chemical dosing system such as H2SO4

dosing, Chlorine di-oxide dosing system & side stream filters, all interconnecting

piping works & piping from treatment plant up to dosing points. Contractor’s

scope shall include supply of all material and erection required for above

chemical dosing systems for cooling water treatment.

b. All dosing packages shall be of modular skid type.

c. Contractor’s scope shall also include monitoring, running and maintenance of

Chemical dosing system for six months of operation after commissioning.

d. Contractor shall engage a specialist sub vendor for “design of chemical dosing

system for cooling water treatment plant and for monitoring, running and

2


(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

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maintenance of Chemical dosing system for six months of operation after

commissioning.”

e. Cooling water treatment system shall be designed & engineered by the specialist

vendor who has similar type of experience, the same shall be got approved from

EIL/Owner prior to his engagement.

f. Contractor’s scope shall include supplying all chemicals for cooling water

treatment for initial fill, pre-commissioning, commissioning, 30 days trial run and

six months consumption of Complex operation after commissioning.

g. The detailed scope of work shall be as per P&ID, Data sheets and specifications

enclosed with the tender.

h. Cooling water treatment Plant building and cooling tower chemical storage shed

shall be provided by others, however, cooling tower contractor shall provide

general arrangement drawing indicating all the functional requirements.

i. Painting of all the modular skids, equipment, etc. shall be as per attached

painting specifications

j. Contractor scope include GA drawing for cable trench excluding supply of all

material, construction, construction supervision and commissioning as scope

matrix. However, providing cable trays/duct as per vendor’s layout including

supply and installation of metal inserts for running power, lifting and control

cables for treatment Plant in the scope of CT vendor as per scope matrix.

k. All other works not exclusively mentioned in the tender document, but are

necessary to complete the system in all respects with respect to process

requirements, P&ID, scope drawings & data sheets etc. shall form a part of total

scope of work.

1.6 MISCELLANEOUS

The graded area & approach road shall be handed over to contractor. Average Finished

Grade Level (FGL) of the area is 124.40 m above Mean Sea Level (MSL).

1.7 COMMISSIONING OF THE SYSTEM

a. Commissioning of the entire system within scope of work including all equipments,

etc. complete, including testing and trial runs for 30 days at no extra cost to owner

shall be provided by the contractor.

b. On completion of the work, the contractor shall remove and dispose off, all

unserviceable materials and other unsightly materials leaving the premises and the

cooling tower in good, safe and operable condition.

c. Owner or his authorised representative will have the right to inspect at any stage of

manufacture and construction, all materials, components and workmanship and

testing of materials. The contractor shall provide all facilities of inspection and

testing without any extra cost to the owner.

d. It shall be clearly understood that the contractor shall be responsible to complete

and commission the entire work in all respects including the work not specifically


(PLOT PLAN & WATER)

DOCUMENT NO.

A672-012-17-44-SOW-8701 Rev. 2

Page 6 of 6


mentioned in the scope of work or specifications or in drawings, but are necessary

to achieve completion.

1.8 PERFORMANCE GUARANTEE & TESTS

a. The cooling tower and other associated facilities shall be tested and guaranteed to

meet the performance requirement when tested in accordance with the procedure

set forth in the latest revisions of the test procedure ATC-105 of CTI. The

performance guarantee test run shall be conducted for 72 hours running.

b. If the performance test shows a deficiency, the contractor shall rectify the defects

without any additional cost to the owner.

While optimising the cooling tower design, bidder shall restrict the guaranteed power consumption as low as possible. However in no case the guaranteed power for each cooling tower cell shall exceed 70KW as the electrical system is designed for this power.

2.0 TECHNICAL EVALUATION CRITERIA FOR COOLING TOWER

COUNTER FLOW TOWERS

The offer of counter flow tower will be evaluated by Fulkerson's method using

Fulkerson's demand curve and fill characteristic curves applicable to the case.

The inlet air velocity shall be 1.5m/sec to 4m/sec. No tolerances are acceptable.

Bidder shall submit calculations in the enclosed Tower sizing format.

3.0 SPARES 3.1 MANDATORY SPARES

List of Mandatory Spares Format

Refer section A-3 3.2 TWO YEARS OPERATIONAL SPARES

Contractor shall recommend spares required for two year normal operation along with

unit price.

4.0 CHEMICALS

Supply of all chemicals and consumables including including first fill required for

equipment & lubricants required during commissioning, trail runs for 30 days,

performance guarantee test run & six months consumption of complex operation after

post commissioning.

5.0 ANNUAL MAINTENANCE CONTRACT FOR CHEMICAL DOSING SYSTEM

Contractor shall provide rates for running and maintenance of complete chemical dosing

system for cooling water system including supply of all materials and consumables

including tools & tackles, supply of necessary manpower for the smooth and trouble free

running of various chemical dosing systems for Cooling water systems. Rates shall be

provided on annual basis.

SCOPE OF SUPPLY/ WORKS COOLING TOWER & CWTP

PACKAGE

Doc No.

A672-012-81-41-SOW-8700Rev. B

Page 1 of 5


STRUCTURAL SCOPE OF SUPPLY/ WORKS

COOLING TOWER & CWTP PACKAGE

PROJECT: INTEGRATED METHANOL & ACETIC ACID PROJECT OWNER : M/s ASSAM PETROCHEMICALS LTD. PMC : ENGINEERS INDIA LIMITED JOB NO. : A672

B 19-12-17 REVISED & ISSUED FOR BIDS MURALI RK VKG

A 17-12-15 ISSUED FOR BIDS MK AH VG

Rev. No

Date Purpose Prepared

by Checked

by Approved

by


PACKAGE

Doc No.

A672-012-81-41-SOW-8700Rev. B

Page 2 of 5


CONTENTS 1. SCOPE OF SUPPLY/ WORK .................................................................................................................. 3

2. SPECIFIC REQUIREMENTS: ................................................................................................................. 4

3. SCOPE OF SUPPLY OF MATERIALS ................................................................................................... 4

4. EXCLUSIONS……………………………………………………………………………………………5 5. LIST OF ATTACHEMENTS…………………………………………………………………………….5


PACKAGE

Doc No.

A672-012-81-41-SOW-8700Rev. B

Page 3 of 5


1. SCOPE OF SUPPLY/ WORK

The scope of Civil and Structural works under this contract shall include design, detailing, supply and construction of all relevant civil and structural works required for successful completion of works for COOLING TOWER & CWTP PACKAGE for Integrated Methanol & Acetic Acid project for Assam Petrochemicals Ltd. as per specifications enclosed with the bid document. The detailed scope of work shall be as per scope matrix defined in document no. A672-012-17-44-SOW-8700. Major Civil and Structural works involved shall include but not limited to the following:

A. Design, detailing, supply and construction & submission of document for review of

following (foundation of these facilities will be provided by others):

i. FRP structure above basin including submission of design for review. ii. H2SO4 storage and dosing system, ClO2 dosing system, various equipments etc. iii. Supporting structures for equipments, pipe supports, ducts, electrical &

instrumentation cable trays iv. All operating and maintenance platforms, walkways, stairs, ladders, access ways,

supporting structures for gratings, hand railing etc. v. Structures for Hoists/Monorails of required capacity for operation/maintenance of

equipment/pumps/walkways/stairs. vi. Staircase shall be in FRP and FRP staircase shall start from grade level.

B. Package vendor to design the superstructure of cooling tower based on following General

arrangement and structural detailed drawing enclosed with bid.

o A672-099-81-41-06991

Construction of cooling tower basin as per above drawing is already in progress at site.

C. Package vendor to note that FPR columns for supporting cooling tower shall be provided

at 2m x 2m grid (fixed). Pedestal for supporting FPR column is under construction at site

at 2mx2m grid. Elevation of pedestal is also fixed in attached structural drawing. For

details refer above mentioned structural drawing enclosed in the bid document. SS anchor

bolts for fixing of FRP column with RCC pedestal is in Package vendor scope. Grouting

after fixing and alignment of cooling tower is in Package vendor scope.

D. Bidder to Confirm general arrangement (attached with bid) and provide load data at base plate level for Cooling tower basin and cold water channel.

E. 3-D Modeling of all structures including foundations (designed by others)

F. Any barricading arrangement required in or around worksite due to safety reasons at any

stage prior to the commissioning of the Plant, shall be designed, constructed, dismantled and removed by the Package vendor from site of work after completion of the project.

G. Setting up of WORKSITE establishment and CONTRACTOR’S facilities

H. Supply of foundation bolts.


PACKAGE

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I. Preparation of fabrication drawings for all structural steel works.

J. Fabrication, supply & erection of Structural steel.

K. Grouting of all equipments, FRP structure & structural steel including supply of grouting material.

L. Painting of structural steel including supply of paints.

M. Providing interface details at the scope boundary limit.

N. Furnishing activity wise work programme and taking necessary approvals from the related

department in the plant before carrying out any activity in existing structure. Any statutory approval, if required, shall also be taken.

O. Documentation of “AS BUILT” drawings/ details for all works as specified elsewhere in this

Bid package.

P. Any other work required/ directed by Client/ Client’s representative/ Resident Construction Manager for the satisfactory and successful completion of the Project.

2. SPECIFIC REQUIREMENTS: Apart from the conditions mentioned in the Engineering Design Basis A672-999-16-48-EDB-1001 and applicable clauses of 6-68-0021 & 6-68-0022; the following shall be strictly adhered to:

a. All designs, detailing & construction shall strictly conform to enclosed specifications.

b. Package vendor shall furnish the GA drawings for cooling tower basin, cold water

channel (based on enclosed structural drawing) along with complete load data at the time of kick off meeting.

c. Package vendor shall furnish the BULK MTO within 45 days from the date of receipt of LOI/TOI. It shall also be updated at 50% & 90% stages of engineering progress and shall be submitted to Client/ Client’s representative for information.

d. Sequence of construction is to be shown on the AFC drawings.

e. Package vendor shall depute his concerned Civil-Structural design engineer to Client/ Client’s representative’s review office as and when required for review of his documents. During such reviews involving computer aided analysis/ design/ drafting of structures, the Package vendor shall make his own arrangement of Personal Computer (PC) in the form of Lap-top in the premises of Client/ Client’s representative’s review office. This is required to expeditiously resolve all the comments including those involving the use of PC by Package vendor in his submission. The Package vendor shall ensure that these PC's are fully operational along with necessary software already loaded including the input/ output/ drawing files of the structures being reviewed. The Package vendor shall revise and re-submit the analysis/ design and drawings as required during review.

3. SCOPE OF SUPPLY OF MATERIALS

All materials (consumables/ non-consumables) required for execution of civil - structural works under this contract shall be in the scope of Package vendor.


PACKAGE

Doc No.

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4. EXCLUSIONS

Construction of Cooling tower basin and cold water channel (RCC) Sump and pump house CWTP building CT Chemical storage shed Drains, Pavement, Flooring

5. LIST OF ATTACHMENTS:

S. NO.

Document No. Title Revision

1 A672-999-16-48-EDB-1001 Engineering design basis 02 6-68-0021 Standard specification : civil & structural

lumpsum turnkey works (LSTK works) - general requirements

0

3 6-68-0022 Standard specification : civil & structural lumpsum turnkey works (LSTK works) - material & construction

0

4 A672-099-81-41-06991 Cooling Tower-GA & Detail Of Basin, Outlet & Covered Channel

A

5 A672-012-81-41-VDR-8700 Vendor Data Requirement for Cooling tower Package

A

Annexure-A

Rev B

Sheet 1 of 1

TECHNICAL COMPLIANCE STATEMENT (TO BE SIGNED BY VENDOR'S PRINCIPAL CORPORATE LEVEL SIGNATORY ON COMPANY LETTERHEAD)

I, ON BEHALF OF M/s CONFIRM THAT THE PROPOSAL OF ------------

----------------------------------------QUOTED BY M/s____________________________________

FOR 500 TPD METHANOL AND 200 TPD FORMALIN PLAT AGAINST MATERIAL

REQUISITION/TENDER/PACKAGE No. --------------------------------------------------------------

IS IN TOTAL COMPLIANCE TO THE SCOPE AS WELL AS ALL THE TECHNICAL

SPECIFICATION AND NO DEVIATION, VARIATION OR RESERVATION

WHATSOEVER HAS BEEN MENTIONED IN THE TECHNICAL OFFER. IT IS FURTHER

AGREED THAT THE TECHNICAL DETAILS FURNISHED IN OUR OFFER WILL BE

REVIEWED BY EIL/CLIENT DURING DETAILED ENGINEERING STAGE AFTER

ORDER AND ANY CHANGE REQUIRED TO MEET THE REQUIREMENTS OF ENQUIRY

SCOPE AND SPECIFICATION INCLUDING AMENDMENT(S) (IF ANY) WILL BE

INCORPORATED BY US WITHOUT ANY PRICE AND TIME IMPLICATION.

(SIGNATURE WITH SEAL)

Documents

· Format No. EIL-1641-1924 Rev.1 ... guarantee of the Tower on Turnkey basis as per scope of ... Design, engineering & supply of piping of all chemical dosing