TENDER DOCUMENT FOR COOLING WATER ... COMMERCIAL – SECTION NATIONAL FERTILIZERS LIMITED BATHINDA...
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1 TENDER DOCUMENT FOR COOLING WATER TREATMENT PACKAGE COMMERCIAL – SECTION NATIONAL FERTILIZERS LIMITED BATHINDA UNIT JULY 2011
Transcript of TENDER DOCUMENT FOR COOLING WATER ... COMMERCIAL – SECTION NATIONAL FERTILIZERS LIMITED BATHINDA...
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TENDER DOCUMENT
FOR
COOLING WATER TREATMENT
PACKAGE
COMMERCIAL – SECTION
NATIONAL FERTILIZERS LIMITED
BATHINDA UNIT
JULY 2011
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TENDER DOCUMENTS FOR COOLING WATER TREATMENT PACKAGE
(COMMERCIAL SECTION)
The Tender Particulars :-
1 I) Tender No. : NFB/PUR/SD/094007 dated 7.7.2011
ii) Requirement a) To formulate and specify Non-Chromate Stabilised
ortho-phosphate zinc (in single formulation )Cooling
Water Treatment programme for Cooling Towers
specified in Technical Section * Provide Services for
CW Treatment.
b) To supply chemicals so as to meet the Performance
Guarantees, as specified under Article 4.3 of Technical
Section.
c) To provide chemical dosing pumps and monitoring
equipments, free of charge on returnable basis.
iii) Quantity of offered
chemicals : to be specified by Vendor.
iv) Type of Tender : Two stage bidding as per details given in Clause No.15.
v) Earnest Money Deposit : Rs.1.00 Lacs (Rs.One Lac.only) as per clause No.13.
vi) Security Deposit cum
Performance Guarantee 20% of order value as per Clause No. 14
vii) Tender closing Date &
Time 2.30 P.M. on 28.7.2011
viii) Tender Opening Date &
Time 3.00 P.M. on 28.7.2011
ix) Tender validity Must be initially valid for 90 days from date of opening
of tender.
x) Delivery Please quote your earliest possible delivery schedule.
xi) Mode of dispatch By Road
xii) Tender shall be addressed to : Chief Manager (Materials) NFL , BATHINDA.
No telegraphic tenders shall be entertained.
xiii) In Technical Section (Section A, B, C), the scope of supply and responsibilities of the
supplier have been defined alongwith following:-
4.0 INSTRUCTIONS TO BIDDERS
4.1 Technical quote 4.2 Bid evaluation 4.3 Guaranteed overall Annual cost
4.4 Vendor’s Scope 4.5 Owner’s Scope
4.6 Trial Order 4.7 Contents of offer
xiv) Period of Contract
Contract shall be initially valid for a period of One year duration from the date of
issuance of LOI which on successful execution may be extended for a period of up to
another One year at the sole discretion of NFL. Vendors shall however quote for a period
of two years during which the quoted rate shall remain firm and valid.
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xv) Staggered supply of Chemicals
At the commencement of the contract, supply shall be made for three months requirement
along with one lot of pre-cleaning, Passivation and contingency chemicals for each tower
and payment shall be released within 30 days of receipt and acceptance of the chemicals
excepting during trial run for which payment will be released as per clause No. 4.6. Section
C of Technical Section.
Thereafter, payment shall be restricted to 1/12th of the Guaranteed overall annual cost on
consumption basis.
The running inventory of one month requirement shall be included in the aforesaid
inventory on three months. Deliveries shall be made in such a way that inventory at NFL
stores does not fall below 2 months requirement at any point of time.
xvi) Firm Prices
Prices offered shall remain firm during the currency of the contract except variation of
statutory levies. Vendor should confirm the same specifically in the offer.
xvii) Payment Terms
No advance payments are allowed. Payments are made within 30 days of receipt and
acceptance of material at site, as per following details. However, during trial period of 6
months (only for parties who have been pre-qualified on trial basis) , payment will be
released in two installments of 3 months each, provided vendor has performed
satisfactory as per clause 4.6 of Section 'C'.
After the successful trial run, payment will be released on monthly basis , however payment shall be restricted to 1/12
th of the Guaranteed overall annual cost.
Further, the pre-cleaning , Passivation and contingency chemicals left over at the end of the
contract shall be taken back by the vendor and NFL shall recover the corresponding
amount from the vendor.
You have the option to receive payment through Electronics Fund Transfer (EFT) / RTGS
Process. For this option, you may submit your bank particulars; i.e. Name of the Party /
Beneficiary, Party’s Banker Name and Address, Branch Name, City, Branch Code (IFSC
Code of Bank, Bank Account No. (All digits in case of CBS Branches), E-mail of
Beneficiary to enable us to release payment accordingly. All bank charges will be to your
account.
xviii) Transportation
The responsibility of transportation of cooling water chemicals along with accessories
from vendor's works to NFL site shall be entirely of the vendor.
Supplier has to ensure that all statutory requirements are fulfilled which are needed
for the transportation of cooling water chemicals as per rules.
xix) Cost of Chemicals Consumed
Monthly consumption of the chemicals shall be indicated by the bidder based on the
design water analysis and parameters to be maintained as defined in TECHNICAL
SECTION.
The annual cost of chemicals consumption on the above basis shall be guaranteed by the
bidder. Any excess cost due to excess consumption of chemicals over the guaranteed one
shall be borne by the supplier. In case, the actual consumption is below guaranteed one,
payment will be restricted to actual consumption of chemicals.
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xx) Maintenance of their own equipment supplied to NFL on loan basis required for cooling
water treatment shall be done by the vendor and at the end of the contract, same shall be
taken back by the vendor. The above will be at the risk and cost of the vendor.
2. Evaluation of bids shall be done with suitable loading, in case of any deviation to NFL terms &
conditions.
3. Any deviation in Technical and Commercial terms of NIT should be highlighted separately in
Part-I of offer, in envelope marked as "Technical and Commercial un-priced Offer."
4. Tender must reach on or before the tender closing time & date. Bids received after the closing
date and time will not be considered.
5. Request for extension of time for submission of tender shall not be entertained in any case.
6. NFL shall not accept delays in postal transit as ground for extension of tender submission
time or acceptance of tenders.
7. Tenders shall be submitted in duplicate in sealed covers.
8. Cover should bear following information:
a) Tender Number
b) Tender closing date & time
c) Tender opening date & time
d) Name and address of tenderer.
9. If the tenders’ covers are found / received opened not to comply with para 7 & 8 above,
the risk & responsibilities for losing tender confidentially shall rest with tenderer. NFL shall have
no obligation as a consequences thereof.
10. Any clarifications on procedure, tender specifications both technical & commercial can be
had from Chief Manager(Materials) any time before tender closing date and time either
personally or by post. Postal delays shall not cause postponement of tender processing dates
& tenderers in their own interest shall take all steps that are necessary for them to participate in
tender well in time.
11. All information sought by NFL during tender evaluation shall be provided within the time set
out in the communication on the subject. Failure of tenderer to comply with requirements of
NFL within stipulated time shall entitle NFL to proceed with the tenders on the basis of
information available. No responsibility for postal delays shall rest on NFL.
12. NFL shall reserve the right to postpone tender opening, withdraw the NIT or reject any or all
tenders or accept in whole or part any tender under intimation to the bidders without assigning any
reason thereof. No querry in this regard shall be entertained from tenderers.
13. Earnest Money Deposit (EMD)
a) Tender must be accompanied by requisite amount of Earnest Money as indicated at 1(v).
EMD shall be made in the form of Demand Draft in favour of National Fertilizers Ltd.,
payable at Bathinda unit. Cheque would not be accepted in any case.
b) Earnest money deposit shall be forfeited at the sole discretion of NFL in case the
tenderer, after intimation from NFL of the acceptance of his tender, either wholly or
in part fails to enter into a contract with NFL and/ or changes any of price and terms &
conditions of the tender within the validity period of the tender.
c) EMD shall be refunded to the unsuccessful tenderers after placement of order on
successful bidder.
d) No interest will be paid on the earnest money deposit of either the successful tenderer (s) or
unsuccessful tenderer (s).
e) EMD of successful tenderers shall be refunded on submission of SD-cum-PBG or can be
adjusted against SD-cum-PBG.
14. Security Deposit-cum- Performance Guarantee
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a) Security deposit -cum-Performance guarantee equivalent to 20% of the order value shall
be deposited/ submitted by successful tenderer as stated in para (1) vi for faithful
performance of the contract Terms & Conditions within 15 days from the date of issue of
Order. The order value shall be guaranteed overall annual cost as detailed in Section-C
clause 4.4(a).
b) The Security Deposit cum Performance Guarantee can be furnished by either of following
modes.
i) Crossed demand draft payable at STATE BANK OF INDIA, SIBIAN, BATHINDA.
ii) Bank Guarantees in prescribed form from Nationalized Banks valid till one month after
completion of the contract period with further claim period of 6 months.
iii) Pledging of FDRs / govt. securities or call deposits.
c) The Security-cum-Performance Guarantee shall be retained by NFL till successful
completion of the contract.
d) In the event of termination of contract as per clause 3.8 of Section-B and 4.6 of Section-C,
NFL shall have the right to forfeit Security-cum-Performance Guarantee without
assigning any reason thereof.
e) The Security Deposit -cum- Performance Guarantee shall not bear any interest.
15. Tender shall be submitted in following manners Ist Envelope shall contain the following
a) Entire information sought under clause 4.7 Section C pertaining to "Contents of Offer".
b) Scope & technical specifications of services and materials offered & detailed literature
and drawing etc.
c) One set of tender document duly signed on each page as token of acceptance of NFL's
terms and conditions.
d) Letter stating acceptance of terms and conditions of tender documents. Statement of
deviations from the stipulated terms & conditions, if any, shall be furnished separately.
e) Earnest Money deposit of Rs.1.00 lakh (Rupees One Lakh only ) by way of bank draft &
Undertaking as per Annexure V.
f) Tender validity.
g) This Envelope shall be marked "Technical & Commercial unpriced offer along with
earnest money."
h) Power of Attorney as per clause No. 36 shall accompany the bid.
IInd Envelope
Item wise price of chemicals in Annexure-A and B.
This envelope shall be marked as "Price Offer"
Both the above envelopes shall be sealed & placed in another envelop & marked as per clause
No.8 above.
16. Destination for Despatch of Chemicals
Road Door delivery at BATHINDA unit
17. Consignee Manager Materials (Stores), NFL, BATHINDA
18. Our Banker STATE BANK OF INDIA, SIBIAN.
19. Transit Insurance will be arranged by Vendor.
20.
Packing and Forwarding Charges: These shall be included in the price which is on FOR
destination basis.
21. Price
The tenderer shall state item wise and total prices as under
i) Ex-works price
ii) Packing & Forwarding charges, excise duty, CST, Entry Tax etc.
iii) FOR station of dispatch.
iv) Freight by (a) Road
v) FOR destination price.
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Tenderers should quote the rates both in figure and words. In case of any discrepancy, rates quoted
in words shall be applicable.
The supply shall be made on FOR destination basis.
22. Delivery Deliveries shall be made in such a way that
inventory at NFL stores does not fall below 2 months
requirement at any point of time.
23. Taxes and Duties
Shall be payable extra on actuals. Documentary evidence wherever applicable shall be
furnished. The rates as prevailing on the date of submitting tender shall be specified.
24. NFL shall have right to vary quantities wherever considered necessary without any liability of
any kind whatsoever.
25. Clear understanding The tenderers shall acquaint themselves fully with all the terms and conditions, limitations, local
conditions, scope, requirements and official / statutory regulations and rules, confirming and
subject to which services are to be performed. Failure to understand / comply with those
requirements will not absolve the tenderers of their obligations and duties under the contract in the
event of their tenders being accepted. No claim whatsoever on the plea of ignorance shall be
entertained.
26. Acceptance / Rejection of Tender
NFL reserves the right to accept or reject, at its sole discretion, any bid / all bids, in whole or in
part and / or accept other than the lowest bid without assigning any reasons thereof.
27. Award of contract
The terms & conditions as embodied in the purchase order shall be final and shall supersede any
other terms & condition that might have been indicated in the tender submitted by the tenderers.
28. Subletting of contract
The successful tender shall not sublet or assign the contract or any part of it without obtaining the
written permission of NFL in advance. In the event of successful tenderer's subletting or
assigning the contract or any part thereof without such permission, NFL shall be entitled to
cancel the contract and to purchase the goods/ award the contract elsewhere and successful tenderer
shall be liable to the National Fertilizers Ltd., for any loss or damage which NFL may sustain in
consequence or arising out of such purchases. Even in case subletting is permitted by NFL, NFL
shall not recognize any contractual obligation with the person or party to whom subletting is
permitted and shall hold the successful tenderer responsible for satisfactory and due & proper
fulfillment of the contract.
29. Force-Majeure
Neither party shall be liable for any claim on account of any loss, damage or compensation
whatsoever arising out of any failure to carry out the terms of this contract where such failure is
caused due to war, rebellion, mutiny, civil commotion, fire, riot , earthquake, draught, floods crop
failure, strike or act of God or due to any restraint or regulation of the State or Central Government
or a local authority/authorities. The party so affected shall give a notice of such occurrence to
the other party in writing within 10 days from the date of occurrence of the force-majeure
condition furnishing therewith a documentary evidence supporting the invoking of force-majeure
On cessation of the force-majeure the party invoking force-majeure shall inform the other
party of the period for which force condition continued and shall also give documentary evidence
thereof to this effect. Should one or both the parties be prevented from fulfilling their contractual
obligations by a state of force majeure lasting continuously for a period of 3 months, both the
parties shall meet and decide about the future course of action for implementation of the contract.
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30. Arbitration
“EXCEPT WHERE OTHERWISE PROVIDED IN THE
CONTRACT ALL MATTERS, QUESTIONS, DISPUTES OR
DIFFERENCES WHATSOEVER, WHICH SHALL AT ANY
TIME ARISE BETWEEN THE PARTIES HERETO,
TOUCHING THE CONSTRUCTION, MEANING, OPERATION
OR EFFECT OF THE CONTRACT, OR OUT OF THE
MATTERS RELATING TO THE CONTRACT OR BREACH
THEREOF, OR RESPECTIVE RIGHTS OR LIABILITIES
OF THE PARTIES, WHETHER DURING OR AFTER
COMPLETION OF WORKS OR WHETHER BEFORE OF AFTER
TERMINATION SHALL AFTER WRITTEN NOTICE BY
EITHER PARTY TO THE CONTRACT BE REFERRED TO
THE ARBITRATION OF DESIGNATED CHAIRMAN &
MANAGING DIRECTOR, NATIONAL FERTILIZERS
LIMITED OR HIS/HER NOMINEE.
THE ARBITRATION & CONCILIATION ACT, 1996 OR
ANY STATUTORY MODIFICATION OF RE-ENACTMENT
THEREOF AND THE RULES MADE THERE UNDER SHALL
GOVERN THE ARBITRATION PROCEEDINGS.
THE CONTRACTOR HEREBY AGREES THAT HE SHALL
HAVE NO OBJECTION IF THE ARBITRATOR SO
APPOINTED IS AN EMPLOYEE OF NFL AND HE HAD TO
DEAL WITH THE MATTER TO WHICH THE CONTRACT
RELATES AND THAT IN THE COURSE OF HIS DUTIES
AS SUCH HE HAS EXPRESSED HIS VIEWS ON ALL OR
ANY OF THE MATTER IN DISPUTE OR DIFFERENCE.
IF THE ARBITRATOR TO WHOM MATTER IS REFERED,
VACATES HIS/HER OFFICE BY ANY REASON
WHATSOEVER THEN THE NEXT ARBITRATOR SO
APPOINTED BY THE AUTHORITY REFERRED ABOVE MAY
START THE PROCEEDINGS FROM WHERE HIS
PRODECESSOR LEFT OR AT ANY SUCH STAGE HE MAY
DEEM FIT”
“ IT IS AGREED BY AND BETWEEN THE PARTIES THAT
IN CASE A REFERENCE IS MADE TO THE ARBITRATOR
OR THE ARBITRAL TRIBUNAL FOR THE PURPOSE OF
RESOLVING THE DISPUTES/ DIFFERENCES ARISING
OUT OF THE CONTRACT BY AND BETWEEN THE PARTIES
HERETO, THE ARBITRATOR OR ARBITRAL TRIBUNAL
SHALL NOT AWARD INTEREST ON THE AWARDED AMOUNT
MORE THAN THE RATE SBI PLR/BASE RATE AS
APPLICABLE TO NFL ON THE DATE OF AWARD OF
CONTACT”.
31. JURISDICTION
All actions at law or suits arising out of or in connection with the contract or the subject matter
thereof shall be instituted in a court of competent jurisdiction at Bathinda.
32. PENALTY FOR LATE DELIVERY Time shall be deemed to be essence of the contract. In case of delay in supplies, unless extension of
delivery has been granted, in writing by NFL on application by the supplier. NFL may at their
option:-
i) recover from the supplier as liquidated damages a sum of equal to half percent per
week or part thereof the value of stores not delivered subject to a maximum of 5% of
value of the order OR
ii) purchase elsewhere on account of and at the risk and cost of the supplier the stores not
delivered OR
iii) cancel the order without prejudice to the rights of NFL under (i) and (ii) above.
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33. SECRECY
Any information delivered or otherwise communicated by NFL to supplier in connection
with the contract shall be regarded as secret and confidential and shall not without the written
consent of NFL be published or disclosed to any third party or made use of by the supplier
except for the purpose of implementing the contract.
34. The tenderer shall indemnify NFL with all Statutory requirements and laws in performing the
contract. The responsibility for action / safety of his employees during the contract period
shall be solely his.
35. The tenderer shall indemnify NFL against any infringement of trademark or title to goods by him
and shall be solely responsible for the goods offered for sale.
Should a tenderer or contractor have a relations or in firm case of company or contractors, one or
more of its shareholders or relations of shareholders employed in the NFL. The tenderer must
disclose the names of such relation(s) while submitting his offer, failing which NFL may in its own
discretion reject the tender or rescind the contract.
36. Laws Governing Purchase Order
The purchase order shall be governed by the Laws of Union of India for the time being in force.
36 The bid shall be signed by the authorized / Principal offer(s) of the bidder. Power of Attorney
granted in favour of any other person for such purpose shall accompany the bid.
37 NFL reserves the right to demand from the tenderers any information / clarifications related to and
incidental to the tender.
38. Bidder will be responsible for any compensation/insurance as per Compensation Act-
1923 of the persons engaged for carrying out the job. Bidder will be solely responsible
for any liability of any person engaged for carrying out the job at NFL Site. Bidder will
ensure compliance of Indian Labour Laws and NFL shall be under no obligation to
accept/admit any claim on this behalf.
39. YOU CAN ACCESS THIS NIT ON OUR WEBSITE www.nationalfertilizers.com
40. YOUR VENDOR USER ID IS BT AND YOUR PASSWORD IS BT =======================================================================
Authorized Signatory
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Annexure-III
UNDERTAKING BY THE BIDDER
Chief Manager (Mtls.)
National Fertilizers Limited,
Bathinda.
Sub: Your Tender No. NFB/PUR/SD/094007 dated 7.7.2011 for Cooling Water
Treatment Programme.
Dear Sir,
With reference to above we hereby confirm that-
1. Tender documents have been read, understood with all clarifications pertaining to various
provided therein.
2. Terms & Conditions laid out in the tender documents are fully acceptable to us and we have
signed each page of the tender document as a token of acceptance of the same.
3. No deviation to any of the terms & conditions of NIT has been quoted by us.
4. Our offer is valid for acceptance for a period of 90 days from the date of opening of the tender.
5. Earnest Money Deposit is enclosed with the following details (In case, the EMD has been
deposited through more than one DD the details may be furnished separately).
DDNo._____________________ Dated ____________ Amount__________ Drawn on
(Bank)____________________ Payable at __________________.
6. Rates quoted are on FOR, NFL Stores basis and the rates including transportation charges shall
remain firm till the complete execution of the order.
7. This is to certify that none of the NFL employee is related to owners/directors. (In case any
relative is working in NFL, furnish details separately).
8. This is to certify that none of NFL’s ex-employee is employed with us. (In case any ex-
employee of NFL is employed, furnish details separately).
9. None of blood relation of the owners/directors is participating in this tender in the name of other
firm.
10. We have not been de-listed/ blacklisted by any institutional Agency/Govt. department for
participation in the tender & no other Firm/Sister Concern/Associate belongs to the same group in
participating /submitting the tender for job.
Dated : Signature of Tenderer or
their Authorised Representative : _________________
Place: Name & Address of Tenderer : _________________
_________________
_________________
Phone No. :_________________
Fax No. :_________________
E.mail :_________________
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Draft
TECHNICAL SECTION
OF
TENDER DOCUMENTS
FOR
COOLING WATER TREATMENT PACKAGE
AT
NATIONAL FERTILIZERS LIMITED
BATHINDA
July -2011
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INDEX
(Technical Section)
Sr. No. Description Page
SECTION – A
1.0 INTRODUCTION
2.0 DETAILS OF EXISTING COOLING WATER SYSTEM
2.1 Cooling Towers
2.2 Filtration System
2.3 Blow down
2.4 Chlorination and Acid dozing system
2.5 CW Heat Exchangers and Operating Temperature
2.6 Make up water characteristics
2.7 Present cooling water treatment programme
SECTION - B
3.0 TECHNICAL REQUIREMENTS OF PROPOSED COOLING
WATER TREATMENT PROGRAMME
3.1 General requirements of cooling water treatment package
3.2 Cooling Water Treatment Scheme
3.3 Contingency treatment
3.4 Alternative chemicals for water treatment
3.5 Mobilization and stabilization
3.6 Monitoring
3.7 Essentials / Performance Guarantees
3.8 Penalties and termination
SECTION - C
4.0 INSTRUCTIONS TO BIDDERS 4.1 Technical quote
4.2 Bid evaluation
4.3 Guaranteed overall annual cost
4.4 Vendor’s Scope
4.5 Owner’s Scope
4.6 Trial order
4.7 Contents of offer
4.8 Splitting of the Contract
4.9 Availability of chemicals without interruption
ANNEXURES
I Make up water analysis for last one year
II a, b, c Heat Exchangers - data
TECHNICAL SECTION
SECTION – A
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TECHNICAL SPECIFICATIONS OF EXISTING COOLING WATER SYSTEM AND
TREATMENT PROGRAMME
TENDER DOCUMENT FOR COOLING WATER TREATMENT PROGRAMME
1.0 Introduction
NFL BATHINDA Fertilizer complex consists of Fuel Oil based Ammonia Plant (900 MTPD) &
Urea plant (1550 MTPD), Captive Power Plant integrated with Steam Generation Plant,
Ammonia Storage facilities, Water Treatment Plants, Cooling Water system, Effluent Treatment
plant, Bagging Plant etc.
Plants have been commissioned in November/ December '78 and are operating with capacity
utilization exceeding 100 %.
The revamping of Ammonia Plant i.e. change over from fuel oil based to gas based is expected
to be completed by December-2012, Cooling water Circulation rate for Ammonia
Cooling Tower (CT-1) after revamping will be 15000 M3/Hr (Approx).
2.0 DETAILS OF THE COOLING WATER SYSTEM
2.1 Cooling Towers: -
Ammonia Urea CPP
MAKE
TYPE
FRAMEWORK
FILLING
BASIN
Paharpur Cooling Towers
Model 664-3-08 bolts SS/CS
Himalaya Pine / fir
Treated Pine / fir
Concrete
NO. OF CELLS 10 4 3
TEMP. IN / OUT ºC. (Max) 46/36 44/36 42/35 COOLING WATER CIRCULATION (NORMAL) M³/Hr 18000 8000 to 10000 8000 DRIFT LOSS M³/Hr 18 10 8 EVAPORATION LOSS M³/Hr 324 129.60 100.8 BLOW DOWN RATE APPROX. M³/Hr 45.0 30.0 15.0 SYSTEM VOLUME (APPROXIMATE) M
3 6000 3000 1800
2.2 Filtration: -
Ammonia Urea CPP
NO. OF FILTERS 3 2 3
TYPE OF FILTER PRESSURE SAND
FILTERS
(HORIZONTAL)
PRESSURE SAND
FILTERS
(HORIZONTAL)
PRESSURE SAND
FILTERS
(VERTICAL)
EXTENT OF FILTRATION (M³/Hr.) 400 200 240
2.3 Blow down:
Blow down for Ammonia, Urea and CPP Cooling Towers combined is within 100 M3/Hr, including
intermittent blow down from cooling tower cells and sand filters.
2.4 Chlorination And Acid dozing System:
Following dosing systems are available for all the cooling water systems:
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(a) Sulphuric acid dosing is done for maintaining pH of the circulation water system of
CT-1, CT-2 & CPP cooling towers.
(b) Chlorine is being dozed through vacuum type chlorinator for maintaining free chlorine level in
return water.
(c) Chemicals are at present being dozed through electronic metering pumps supplied by the party.
2.5 Cooling Water Heat Exchangers and Operating Temperatures: -
2.5.1 Ammonia Plant
Shell and tube heat exchangers with cooling water, mainly, on tube side are in operation. The
material of construction is generally stainless steel type 304. The Synth. Gas Compressor inter
coolers (3 nos.), Synth. Gas water cooler AEA-603, Oxygen Gas Compressor inter-coolers and
after-coolers (6 nos.) are having cooling water on shell side. It may be noted that maximum
temperature on process side is about 175 Deg.C and Cooling water outlet is 45 Deg.C
2.5.2 Urea Plant:
The material of construction is generally stainless steel in heat exchangers. In CO2 compressor
intercoolers, the cooling water is on shell side for 1st stage intercooler & in others, it is on the tube
side. It may be noted that the maximum temperature on process side of the coolers is as high as
200o C.
The operating data of various important heat exchangers in Ammonia, Urea Plants and CPP on the
process and waterside is listed in Annexure-II a,b & c respectively.
2.6 Make-up Water Characteristics:
2.6.1 The make up water to all the three Cooling Towers is filtered water coming from Raw Water
filtration Plant after clari-flocculation and filtration through gravity sand filters.
Design basis: -The make up filtered water analysis is generally in following range
Parameters Unit Range
Total Hardness as CaCO3 ppm 82~ 115
Calcium Hardness as CaCO3 ppm ppm 60 ~ 85
Magnesium Hardness as CaCO3ppm ppm 22 ~ 35
Silica as SiO2 (ppm) ppm 1.8 ~ 4.5
Chloride as CaCO3 (ppm) ppm 3.5 ~5.5
M-alkalinity as CaCO3 (ppm) ppm 50 ~75
Sulphates as CaCO3 (ppm) ppm 35 ~55
TDS ppm 150 ~225
PH 7.2 – 8.0
Iron ppm 0.07~ 0.10
2.6.2 Treated water is not being used as make-up water.
2.7 Present Cooling Water Treatment Programme (Circulating Water Parameters):
Parameters Unit Ammonia Urea CPP
Total hardness As Ca CO3 ppm 620 ~ 880 450 ~ 650 620 ~ 880
Calcium Hardness As Ca CO3 ppm 450– 600 325 ~ 450 400 ~ 600
Magnesium Hardness As Ca CO3 ppm 170– 280 125 - 200 170 ~ 280
Chloride ppm 100 – 250 100-250 100-250
PH 6.8 – 7.8 6.8 – 7.8 6.8 – 7.8
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Turbidity NTU Less than 20 Less than 20 Less than 20
Total Inorganic Phosphate ppm 9~11 9~11 9~11
Zinc ppm Min. 1.0 Min. 1.0 Min. 1.0 Iron as Fe ppm <1.0 <1.0 <1.0 Total Ammonia ppm 25 – 60 100 – 250 0 - 20
2.7.1 The following chemicals are being used in the present Cooling Water Treatment
Programme, in all the three cooling towers
Name/Trade No. Function
Maxtreat 7702,7710H Corrosion inhibitor
Maxtreat –2021,7080 Dispersant
Maxtreat-7002 Anti-foulant / Bio-dispersant
Maxtreat -40 Non-oxidizing biocide
Maxtreat -652 Non-oxidizing biocide
Maxtreat –608C Non-oxidizing biocide
Maxtreat -7961 Chlorine dioxide precursor.
Maxtreat –7960S Chlorine based Bromine activator.
Maxtreat-801 Acid inhibitor
Maxtreat -DOSS Oil Contingency Chemical
SECTION – B
3.0 Technical Requirements for Proposed Cooling Water Treatment Programme
3.1 General Requirements for Cooling Water Treatment package
a) NFL requires vendors to provide Non-Chromate, ortho-phosphate- Zinc, based cooling
water treatment package for the cooling towers of Fuel oil at Bathinda plant. The cooling
water treatment shall comprise of Zinc as the cathodic inhibitor and stabilized ortho-
phosphate as the anodic inhibitor combined as a single formulation. Individual chemicals
as cathodic and anodic inhibitors in basic chemical form are not acceptable. The products
offered should be field tested and proven.
b) A dedicated scale inhibitor- cum-dispersant shall also be included in the programme for
dispersion of iron, general scale, and sludge and to take care of chances of scaling due to
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operation at high pH. Treatment should ensure no scaling in the heat exchangers. There
should not be reduction in heat transfer capacity of heat exchangers, due to fouling or
formation of deposits.
c) Effective control of biological growth shall be provided by using suitable biocide, bio-
dispersant together with chlorine dioxide. Vendor should quote for 3 or more non-
oxidizing biocides. Doses should correspond to MIC of the particular biocide.
d) It is desirable to have continuous dozing of chemicals preferably by metering pumps for
good control.
e) Blow down should be suitable for discharge into the inland surface water drains which
should be within the IS: 2490 (1981) and MINAS specifications. Chemicals and
treatment programme should meet this requirement without exception. The total quantity
of blow down from all cooling towers needs to be maintained below the present level as
given at 2.3 with the indicative make up water analysis specified at 2.6.1. The SRB limits
in make-up water shall be 5 Nos. per 100 ml (normal) and 20 Nos. Per 100 ml (max.).
Vendors should mention the water blow-down after each non-oxidizing biocide dosage at
percent (%) of system volume and quantity. Excess blow down or make up if resorted to
without valid reasons, NFL reserves the right to recover the cost of excess water
consumed along with cost of chemicals from the party.
f) Treatment programme should be capable of sustained operation under the prevailing
conditions and should be able to tolerate, ingress of ammonia, urea dust and oil, etc. In
case of Fuel oil based Plants, occasional ingress of Coal dust fly ash, H2S vapours, etc., in
the cooling towers may also take place. Details of contingency limits are indicated at 3.3
below.
g) Changeover of cooling water treatment shall be on line i.e without plant interruption. On
line changeover chemicals, if required, shall be indicated separately but form a part of the
contract.
h) Chemicals shall be supplied in new HDPE containers. The containers must be properly
sealed and also shall be labeled properly with name, brand name, batch no, expiry date
etc. Each batch of chemicals should have test certificate that all the chemicals are bio-
degradable (preferably within 24 hrs), environment friendly and do not fall under banned
category
i) Total quantity of chemicals, to be supplied by the Vendor, should be adequate for 365
days operation of the plant in a year.
j) The offer should be realistic. Under quoting or offering lower doses of chemicals than
required will call for rejection. NFL reserves the right of increasing doses of the
chemicals offered by the parties based on the past experience, in case the programme is
falling short to meet the requirements.
k) Vendors are advised to visit plant site and submit proposal only after extensive plant
survey, ascertaining quality of make up, circulating water, blow down, equipment
metallurgy etc. Vendor is free to quote chemicals over and above the ones specified in
this document to meet the guarantees. No complaints of the vendor will be entertained
after issue of work order.
l) Vendor shall provide analytical method of analysis along with active content, details of
instruments/reagents required for analysis of various Chemicals active content in bulk
chemicals & their value. If these methods are not submitted by the vendors, price bid
will not be opened. NFL has the right to check the analysis.
Corrosion Inhibitor % of Total phosphate as PO4
% of Zinc as Zn
Dispersant % of Organo-phosphonate
Sequestration value mg/ml (minimum)
Bio dispersant % Active ingredient & physical property
NaClO2 % active content
Non- Oxidizing Biocide as described
16
m) Vendor shall carry out daily water analysis to monitor the necessary treatment
parameters. NFL has the right to check the analysis. Lab facilities shall be provided to
the vendor for the above analysis. However, for analysis of chlorine dioxide and Zinc,
spectrophotometer shall be provided by the vendor. All reagents for testing/analysis are
in the scope of vendor.
n) Corrosion coupon will be assessed jointly by NFL and vendor.
o) Microbiological analysis will be carried out by NFL in the presence of Vendors'
representative.
3.2 CW Treatment Scheme
3.2.1 pH Control
Treatment program should be designed in such a way that the pH of circulating water in
return header is kept within 6.8-8.0. pH in circulating water shall not be allowed to go
below 6.5 at any time.
Vendor shall maintain the same with his treatment and by dosing concentrated sulphuric acid.
Based on site conditions, pH may also be controlled by dosing Soda Ash, if so required,
under exceptional circumstances after discussion and information to NFL citing reasons
for use of the same.
a) pH reduction due to microbiological activity should be avoided. In case of such
occurrence, reasons for such an occurrence shall be established to the satisfaction of NFL
and corrective action must be taken immediately for which vendor shall use biocide. If
pH reduction is due to other reasons, the contractor may be allowed by NFL to use Soda
Ash. Bidder shall intimate the quantities of Soda Ash to be consumed for each cooling
tower separately in techno-commercial bid, which shall be to bidder’s account and
arranged by bidder. The maximum quantity of soda ash permitted per year for all towers
taken together will be limited to 24 tons/year.
Any extra quantity of soda ash consumed other than that mentioned above will also be to
the bidders account.
b) In case of pH reduction due to ingress of acidic gases, soda ash dosing shall be permitted
for pH correction, which will be in NFL’s account. Such dosing shall be decided by
mutual consent in writing prior to start of dosing.
3.2.2 Corrosion Inhibitor and Anti-scaling Dispersant: The treatment programme should be
capable of maintaining corrosion rate less than 3.0 mpy on MS un- passivated sand
blasted corrosion coupons manufactured as per ASTM, to be supplied by NFL and shall
be installed in return header every month in each cooling tower. Corrosion racks and
necessary fittings to be provided by vendor.
One additional rack shall be available as common spare (standby) for all towers. The corrosion
coupons shall be sealed by NFL and party’s representative will be associated with such
sealing. All keys shall be kept with plant authorities.
a) Party should give percent (%) composition of total phosphate & Zinc in their corrosion
inhibitor. Normal of 9 -11 ppm of total inorganic phosphate is to be maintained by regular
chemical dosing at all times. Quantity of phosphate should be worked out at 10 ppm total
inorganic phosphate dosing for the purpose of evaluation. Minimum 1 ppm of Zinc is to
be maintained in circulating water.
b) The scale inhibitor-cum-dispersant shall take care of chances of scaling due to operation at
high pH and high temperature. Procedure for analysis of dispersant in circulating cooling
water is essential along with the technical bid. To take care of the adverse effects of higher
pH during monsoon season, doses of dispersant are to be maintained on sufficiently higher
side to avoid scale formation in critical exchangers where cooling water is on shell side
with low velocity. The dispersant offered should be proven and supporting documents for
the same to be provided
c) In case of some critical exchangers, a need may arise for localized (satellite) dosing of
17
dispersant. The Vendor should be ready with necessary arrangements for the same. Doses
of dispersant should be selected accordingly.
d) Dispersant Test: Recommended dispersant should give min. 95 % of Ca3 (PO4) 2
inhibition test at 50 % of the recommended dose level under test condition which are
pH: 8, Ortho-PO4: 8 ppm, temperature - 70OC and Ca hardness 500 ppm as CaCO3 in
presence of total iron of 1mg / lit in cooling water system. NFL reserves the right to test
the dispersant.
3.2.3 Micro Biological Control:
i) Chlorination shall be done continuously to maintain a free residual chlorine level of
0.2 ppm in return header of each cooling tower.
ii) Any excess of chlorine should be avoided due to its harmful effects.
iii) Chlorine dioxide shall be dozed for which vendor shall provide a chlorine dioxide
generator for in-situ generation.
iv) At least three non-oxidising biocides out of the following suggestive biocides are to
be recommended by the vendor so as to achieve the guaranteed figure as per clause
No. 3.7. Minimum active contents of biocide and ppm dose based on hold up volume
for effective bio control shall be as follows
S.
No
Biocide type Minimum
(%) Active
content
Minimum (ppm)
dose based on
Hold up
1 Quaternary Ammonium
compounds (QUAT)
40 25
2 Carbamate based 45 30
3 Isothiozoline based 1.4 30
4 Methylene bis thiocynate
(MBT) based
9 25
5 Diclorophene based 40 30
Minimum dosing frequency of non-oxidising biocide will be once in two weeks per
tower and a minimum of 26 doses per year per tower, preferably, with sequential
dosing. Changes in the biocides, if any, will be reviewed after actual application and
monitoring of the system.
v) Party shall submit procedure for analysing active ingredients of all the offered
biocides. If offered biocide active contents and/or dose are less than the above, NFL
reserves the right to reject the bid technically or modify the dose to arrive at aforesaid
minimum requirement and load the additional quantity. If offered concentration/dose
is more than specified above, then offered quantity shall be considered for evaluation.
Vendors can also quote biocides other than listed above. However vendor shall
submit adequate proof that the offered non-oxidising biocide with indicated
active ingredient and dosage has been used successfully for at least 2 years in
other ammonia/urea cooling towers, backed up by user certificate.
Effectiveness of biocide at quoted levels can be independently verified by NFL
through certified laboratories. If dosage level is found inadequate, then quantity can
be enhanced by NFL, cost of which will be borne by vendor. Result of test will be
binding on the party.
vi) A dedicated bio-dispersant shall be dosed on continuous basis to keep the system free
from bio-film formation. Minimum dosage of 3.0 ppm of bio dispersant in
circulating water is to be maintained.
3.2.4 Operating Parameters: In addition to details specified above, the vendor should also
consider the following, while designing the treatment.
a) Holding time index / large system volume and limitation in blow down rate. COC should
be in the range of 6-8 b) Water quality as specified at 2.6.1.
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c) High temperatures in the CW heat exchangers (both on process and CW sides). Material
of construction of heat exchangers as given at annexure-II.
Vendor will provide following circulating water parameters to be measured on daily
basis:
Parameter Unit Normal Maximum*
pH
Free residual chlorine ppm as
Cl2
-
Chlorine Dioxide (ClO2)
Oxygen reduction potential
(ORP)
Turbidity
Total hardness as CaCO3
Calcium hardness as CaCO3
Zinc ppm
Ortho phosphate as PO4 (ppm)
Total Phosphate ppm PO4
Scale Dispersant ppm
Silica as SiO2
Bio dispersant
Chloride as Cl
Cycle of Concentration
M alkalinity as CaCO3
Iron content
Nitrifying bacteria should be maintained preferably less than 25 counts/ml. On a
monthly basis.
Maximum value shall be applicable based on the quality of make up water as mutually
agreed before starting the treatment. It is desired that normal control limits should not be
crossed. In case of exceeding the normal limits, necessary information shall be conveyed
to Production Incharge and corrective action taken immediately.
3.3 Contingency Treatment:
3.3.1 The vendor shall have a contingency treatment programme to take care of the effect of
various contaminants.
The limits of contaminants in CW circulating water shall be as follows:
Contaminants Ammonia CT
PPM (Max)
Urea CT
PPM (Max)
CPP CT
PPM (Max)
Ammonia 60 250 20
Urea 10 10 10
Oil 10 10 10
3.3.2 Contingency shall be decided at the time of its occurrence by mutual consent, in writing,
by NFL. Same shall be approved by Unit In-charge prior to the start of contingency
treatment. A contingency shall be declared, if disturbed condition persists for 48 hrs
(forty eight hours) for ammonia and Urea and immediately on detection of oil. The bidder
should indicate the details of chemicals to be used along with quantity for meeting each
contingency for each tower separately. This treatment shall remain effective for 72 hours.
Loading of quotations against contingencies shall be made based on the number of
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contingencies as stipulated below:
Ammonia CT Urea CT CPP CT
Oil 1 1 1
Ammonia 1 3 0
Urea 0 0 0
In case, the contingency like leakage of cooling water from underground header etc, is
not controlled within a reasonable time and NFL decides to continue with it in order to
avoid plant interruption, then the modalities of using additional chemicals shall be
discussed and agreed mutually. The continuation of contingency as well as additional
expenditure on this account shall require prior approval of the Unit In-charge.
3.4 Alternative chemicals for water treatment
The contractor may sometimes find it necessary to change one or two chemicals during
the treatment based on his experience regarding efficacy of the chemical in use. Since the
contractor shall be in a better position to know regarding nature of make up water,
circulating water and effectiveness of the treatment, after carrying out the treatment for
some time, allowing use of alternative chemicals is considered in the interest of achieving
better results.
For this purpose vendor shall specify all such alternative chemicals along with their unit
rates in the quotation itself. Main chemical shall be taken for the purpose of bid
evaluation and calculating guaranteed cost. Any chemical not in bidding list, if needed
can be agreed after mutual discussion and prior approval of Unit In-charge.
However, the overall guaranteed cost shall remain the same.
3.5 Mobilization Period & stabilization period: Mobilization period for starting the
treatment shall be one-month maximum from the award of contract or as mutually
agreed. However, Contract period for the purpose of calculation of the number of days
shall be with effect from the actual date of start of treatment programme. Stabilization
period shall be one month (max. ) from the start-up of the Cooling Water Treatment as
mutually agreed. The trial period of six months where ever applicable shall include one
month of stabilization period. No penalty shall be levied during stabilization period. If
existing vendor continues for the next contract, there shall be no stabilization period.
3.6 Monitoring:
3.6.1 Monitoring Tools: Vendor should be equipped with gadgets for monitoring the health of
the cooling water system, including simulation capabilities for trouble-shooting. Gadgets
for studying fouling factor, heat flux etc. on line shall be required. Vendors should clearly
mention the details of the monitoring instruments which will be supplied free of cost with
the package for use at site on returnable basis.
Following online / other monitoring instruments are to be provided for each tower from
the Vendors:
a) Bio-fouling monitors (with differential pressure gauge)
b) Online Deposit monitors.
c) Corrosion racks with necessary fittings and screws compatible with corrosion coupon.
d) Analytical kit for field testing (with reagents replenishment).
e) Corrator facility for instantaneous corrosion rate (Minimum twice in month during
normal operation)
f) ORP monitor
g) Dosing system including metering pumps and replacement of spares as and when
required. Vendor shall keep necessary spare dosing and monitoring system and spares
20
parts at site so that chemical dosing system and monitoring system can be kept in
service uninterrupted. If the vendor fails to maintain the system in healthy condition
the same will be attended by NFL at the cost and risk of the vendor. To ensure precise
addition of chemicals on continuous basis, the dosing system shall comprise all the
parts/pumps /equipments/pipelines/valves to ensure the dosing of different chemicals
from dosing tank right up to the basin and any other equipment required to achieve the
dosing on continuous and uniform basis.
h) PC based Software and hardware for trend check.
i) Any other instrument for simulation and diagnostic study
3.6.2 Vendor should have access to a full-fledged R & D facility of his own. The party should have
properly trained team for trouble-shooting of the problems associated with this cooling water
treatment.
3.6.3 Monitoring Services: Vendor should carry out:
a) Continuous monitoring and supervision by his specialist(s) during pre-cleaning &
passivatrion initially and also on day-to-day basis, during normal operation.
b) Reporting to plant personnel & submission of daily analysis report to Plant In-charge by
4.00 pm every day. Involve NFL personnel in the operation and control of the treatment.
c) Submission of monthly report on water quality and monthly consumption of chemicals.
d) Reports with detailed analysis and corrective actions for excess consumption of normal
and / or contingency chemicals, if any.
e) Trouble shooting as and when required through vendor's resident expert.
f) Training of NFL personnel periodically w.r.t cooling water treatment developments.
3.6.4 Vendor should depute a supervisor cum Chemist at their cost for trouble-shooting and
analysis to take care of the on-going cooling water treatment. The qualification &
experience in fertilizers industry cooling water treatment of the supervisors should be
submitted along with the technical bid.
3.6.5 Dosing of all chemicals (regular as well as contingency) shall be the total responsibility
of the Vendor. In case the plant is being operated under disturbed conditions of leakage
etc leading to deviation in cooling water parameters, pH of cooling water will be checked
every 2 hours for 2-3 days to find optimum dosage of chemicals to take care of the
situation.
3.7 Essentials/Performance Guarantees Vendor will furnish the following guarantees for the performance of their C.W. treatment
programme. Written procedure shall be submitted for analysis and ascertaining the
guarantees, which shall be approved by NFL.
3.7.1 Corrosion Rate: The corrosion rate as measured on sand blasted MS Unpassivated Test
Coupons (ASTM: 179 Steel) as per ASTM procedure separately for each tower should not
exceed 3.0 mpy (measured in return header).
a) Analysis shall be reported as a rational number up to one decimal place after rounding off
as per procedure laid down in IS: 2-1960.
b) The test coupon shall be removed normally after duration of 30 days. However, in case of
any exigencies, the time limit may vary by plus minus 5 days after approval of Unit in-
charge.
21
c) In case of completion of 6 months of trial period, if the test coupon has not completed 30
days, another 15 days (max.) shall be allowed to ascertain the performance for 30 days,
which shall be allowed after approval of Unit head.
d) In case cooling water circulation is stopped for more than 8 hours, the test coupons shall
be rejected.
3.7.2 Micro Biological Count: Bidder shall guarantee cooling water system free of
undesirable biological growth (to be measured every week) throughout the period of
operation.
Total bacterial count (TBC) should not exceed 1.0 lac/ml on fortnightly basis
Sulphate Reducing Bacteria (SRB) should not exceed 100/100 ml on fortnightly basis.
3.7.3 Iron in circulating water < 1.0 ppm on fortnightly average of iron analyzed on
daily basis.
3.7.4 There should not be any tube leakage or fouling of heat exchangers due to inadequacy in
the C.W. treatment, which may result in stoppage of plant. Inspections during planned
shutdowns should reveal that heat exchangers and cooling water system is in good
condition without serious corrosion, pitting, scaling or fouling.
3.8 Penalties and termination
In case, the conditions, mentioned under the ‘Guarantees’, are not met, the following penalties
shall be levied on a yearly basis (including trial order period, if any)
3.8.1 Corrosion rate:
a) If the guaranteed corrosion rate for any one of the Cooling Towers exceeds 3.0 mpy,
Rs.25, 000/- per tower, shall be deducted for each of such failure.
b) In addition to above deduction, if the failure occurs consecutively in the
following month for same tower 20% of the SD-cum-PBG on pro-rata
basis (Total PBG Amount * number of towers where failure occurred /
total number of towers being treated) will be forfeited and vendor shall
be given 30 days from occurrence to rectify the same, failing which the
balance SD-cum-PBG shall be forfeited and contract is liable to be
terminated.
c) If corrosion rate exceeds 3.0 mpy on three occasions in same tower, the entire SD-
cum-PBG amount shall be forfeited and contract is liable to be terminated.
3.8.2 If any of the three parameters, (TBC, SRB and Fe), individually exceeds the limits in
any one tower mentioned above during the term of the contract, vendor
shall be allowed to modify treatment at his cost. If any one or more of the
parameters remain out in consecutive reading, 5% of the SD-cum-PBG
on pro rata basis (Total PBG amount * number of towers where failure
occurred / total number of towers being treated) will be forfeited. It is
further clarified that the maximum liability per fortnight per tower is 5%
of the SD-cum-PBG (on pro rata basis) against three parameters stated
herewith.
22
3.8.3 a) If any two out of the three parameters (i.e. TBC, SRB, and Fe) are more
than guaranteed values for consecutive 3 readings, in same tower, 10% of
the SD-cum-PBG on prorata basis (Total PBG amount * number of towers
where failure occurred / total number of towers being treated) will be
forfeited. It is further clarified that the maximum liability per fortnight
per tower for third consecutive failure on this account is 10% of the SD-
cum-PBG (on pro rata basis) against three parameters stated herewith.
b) If any two out of the three parameters i.e. (TBC, SRB and Fe) are more
than guaranteed values for consecutive 4 readings in same tower, 10% of
the SD-cum-PBG on prorata basis (Total PBG amount * number of
towers where failure occurred / total number of towers being treated) will
be forfeited and vendor will be given 30 days from occurrence to rectify the
same failing which the contract is liable to be terminated. During the
period of 30 days given to contractor from occurrence, no penalties will be
levied. It is further clarified that maximum liability per fortnight per
tower for fourth consecutive failure on this account is 10% of the SD-cum-
PBG (on pro rata basis) against three parameters stated herewith 3.8.4 NFL shall have the right to terminate the contract, in case of any eventual unsatisfactory
performance including heavy fouling of heat exchangers due to which plant has to be
stopped, notwithstanding various provisions of the contract.
3.8.5 In case due to unsatisfactory performance of the contract, termination
clause becomes operative, a termination notice of 15 days (minimum) to 3
months shall be given to the vendor. The contract shall be terminated after
expiry of the notice period. During the notice period, all terms and
conditions, as applicable in the contract, shall apply. Penalties applicable
during the period when termination clause becomes operative and party is
informed regarding the same, till termination, shall be as per clause 3.8.1
(a). No penalties w.r.t. Other guaranteed parameters of TBC, SRB, Fe
shall be applicable.
3.8.6 The total liability of the vendor during one year term of contract on
account of failure to meet guarantees of corrosion rate, SRB, TBC, Fe will
be limited to SD-cum-PBG amount plus penalty amount deducted under
clause 3.8.1(a)
.
23
SECTION - C
4.0 Instruction to Bidders for bidding documents
4.1 Technical Quote
1. Bidder shall quote separately for Ammonia, Urea and CPP (wherever applicable) Cooling
Water treatment in respect of control parameters of circulating water, chemical dosing
rate, chemical consumption, Unit rates etc.
2. Bidder shall indicate the maximum consumption of each regular chemical to be supplied
by him, for each cooling tower per month. Maximum payable/guaranteed contract
amount shall be calculated for all towers taken together, on yearly consumption based on
365 days of regular operation of cooling towers.
3. Bidder shall also mention tower wise maximum consumption of sulphuric acid and
chlorine to be supplied by NFL as free issue materials.
4. Any extra chemicals, required for change over from existing treatment to new treatment
shall be mentioned separately.
5. After annual shutdown and draining of Cooling Tower, the requirement of Pre-cleaning/
bio- cleaning and passivation chemicals as well as one extra charge required due to
refilling of cooling tower, should be indicated separately.
6. Contingency chemicals and their quantities for contingency, as foreseen by Bidder (Ref
Clause 3.3) for each cooling tower, shall be indicated separately. Same shall be included
in evaluation of bid.
7. In case of any additional shutdown during the year which has resulted in draining of the
water from the cooling tower (s), the additional initial fill, pre-cleaning/ bio-cleaning and
passivatrion chemicals including biocide and bio dispersant whichever required, shall be
allowed after approval of competent authority
8. Bidder should specify the time period for stabilization before start of normal treatment
programme. Maximum stabilization period shall be 30 days from start up of cooling
water treatment. In case of any interruption in this duration, due to shut down resulting in
draining of cooling towers, stabilization period shall be extended suitably after mutual
discussions with NFL. However, contract period shall remain the same and payment shall
be released for chemical consumption on actual but limited to overall cost of all the
towers taken together on yearly basis.
9. Chemical consumption shall be calculated on the basis of C.O.C., blow down quantity as
mentioned in ‘details of existing cooling water system’ in Section-A. Bidder shall furnish
calculations for the same.
10. Contract shall initially be for one-year duration, which on successful execution may be
extended for another year. Vendor shall, however, quote for a period of two years during
which the quoted rates shall remain firm.
4.2 Bid Evaluation: Following shall be considered for the purpose of bid evaluation
only:
• For the purpose of evaluation, cost of all towers shall be clubbed together on an annual
basis.
• Cost of chemicals for regular treatment based on bidders quotation in terms of quantity
and unit rates shall be considered for 365 days of operation in a year
• Cost of chemicals required for change over from existing treatment to new treatment.
24
• Cost of Pre-cleaning/ bio- cleaning and passivation chemicals as well as one charge
required due to refilling of cooling tower, after annual shutdown and draining of Cooling
Tower.
• Cost of Contingency chemicals based on quantities indicated by bidder for each
contingency and for number of contingencies as listed at 3.3 for each cooling tower.
• Equivalent cost of sulphuric acid and chlorine to be supplied by NFL, based on
maximum quantities indicated by bidder for 365 days.
It is however, clarified that guaranteed overall annual cost shall be calculated as detailed
at 4.3 below.
4.3 Guaranteed overall annual cost
a) Vendor shall guarantee the overall annual cost of treatment chemicals, which shall be
worked out as follows. However payment shall be released based on actual consumption
of chemicals limited to overall guaranteed cost.
b) Guaranteed overall annual cost shall be worked out as follows:
• The cost shall be clubbed for all the towers on yearly basis
• Landed Cost of chemicals for regular treatment based on bidders quotation in
terms of quantity and unit rates shall be considered for 365 days of operation in a
year. In case there is a variation in actual operating days, adjustment shall be
made on pro-rata basis for either side. Any excess consumption above the
adjusted quoted value shall be, to the vendor’s account.
• The quantity of sulphuric acid, which is supplied to the vendor as free issue
materials by NFL, shall be clubbed for all the towers. Any additional quantity
consumed over and above the quoted quantity shall be to the bidders account.
• The quantity of chlorine, which is supplied to the vendors as free issue materials
by NFL, shall be clubbed for all the towers. Any additional quantity consumed
over and above the quoted quantity shall be to the bidders account.
• Quantity of sulphuric acid and chlorine as quoted by the bidders shall be
considered separately. These shall not be adjusted against each other nor these
shall be included in the Guaranteed overall annual cost.
• Any extra chemicals, required for change over from existing treatment to new
treatment shall be mentioned separately. These shall not be included in
Guaranteed annual cost. Payment against these chemicals shall be made on the
basis of actual consumption, limited to quoted value, over and above the
Guaranteed overall annual cost
• Pre-cleaning/ bio- cleaning and passivation chemicals as well as one charge for
refilling of cooling tower after annual shutdown, should be indicated separately
and shall be paid additionally, on actual consumptions. These shall not be
included in Guaranteed annual cost.
• The contingency chemicals as quoted by the bidders shall not be included in
Guaranteed overall annual cost. Payment against these chemicals shall be made
on the basis of actual consumption, limited to quoted value, over and above the
Guaranteed overall annual cost.
c) Any excess consumption of sulphuric acid or chlorine shall be charged at current
price. Current price shall mean landed price for the period after vendor has
consumed the total quantity of these chemicals as specified in contract. No
departmental charges shall be charged for over consumption.
d) Any chemical, other than sulphuric acid and chlorine shall not be supplied by
NFL. The chemicals like Soda Ash etc. (if required) shall be in the scope of the
Contractor.
25
4.4 Vendor’s Scope
Vendor’s scope of work, supply and services shall be as described below:
1. Design of suitable cooling water treatment programme to meet the system
requirements and technical specifications.
2. Supply of chemicals for initial change over, normal operations, contingencies and
extra charge for refilling of cooling tower after annual shutdown.
3. To provide and maintain dosing system inclusive of metering pumps for chemical
dozing, including the pumps for chemicals for pH control; special instruments for
monitoring the treatment programme; Corrosion rack, bio-fouling monitors and scale
monitors etc. free of cost to NFL, on returnable basis.
4. Supervision by Vendor’s specialist(s) during initial commissioning, change over and
stabilization of treatment package followed by round the clock regular supervision
during normal operations. Vendor specialist shall be well qualified and experienced.
Vendor shall obtain approval of bio data of his specialists from NFL prior to his
appointment at site.
5. Training of NFL personnel in the operation and monitoring of cooling water
treatment.
6. Chlorine dioxide generator and Spectrophotometer for analyzing Chlorine dioxide
along with reagent to be provided by vendor, which shall be taken back after
completion of contract.
4.5 Owners Scope
NFL’s scope of supply and responsibilities shall include the following: -
1. Sulphuric Acid (98% concentration) shall be made available in the storage tanks
near the Cooling Tower.
2. Chlorine in One Tonne cylinders shall be placed at the specified locations.
3. In general, NFL shall not supply any additional chemical other than chlorine and
sulphuric acid. However, in case NFL agrees on emergency basis as a special
case, same shall be supplied by NFL on chargeable basis with additional 25%
departmental charges.
4. Power connections shall be provided to all the equipments/ instruments for dozing
operations and monitoring.
5. Laboratory assistance, to the extent available, shall be provided.
6. NFL shall make available test coupons manufactured as per ASTM specifications.
7. NFL shall operate the system under guidance of Vendor’s specialist.
8. Accommodation to site engineers of vendor shall be furnished subject to the
availability and on chargeable basis at commercial rates.
9. RAX telephone facility will be provided at the residence of the vendor in township
for better communication.
4.6 Trial order
4.6.1 If vendor has been pre-qualified for placement of order on trial basis then order shall be
placed on trial basis for a period of six months (Including stabilization period). Once
trial is successfully executed, the order shall be extended by another six
months to make one full year term which will be further extendable for
another one year provided the Unit feels that the contractor has executed
the contract in its true spirit. 4.6.2 In case of orders placed on trial basis, vendor shall submit SD-cum-PBG equivalent to
20% of the value of the annual contract. Even if the order is placed on trial
basis and then extended for the balance six months, penalties/guarantees
26
and other terms and conditions will be applied for one year.
4.6.3 Payment to vendor during trial period (six months) shall be made in two installments i.e.
after successful completion of a period of 3 months each.
4.6.4 In case of failure of trial order, no payment shall be released to vendor and amount
equivalent to 20% of the guaranteed order value for 6 months shall be forfeited from the
SD-cum-PBG. If party performs satisfactorily in first three months of trial period, but
fails in succeeding three months, payment for first three months shall be released while
the SD-cum-PBG equivalent to 20% of order value for six months shall be forfeited.
4.7 Contents of Offer
4.7.1 Bidder shall furnish details of the treatment programme including the following: -
a) Descriptions of programme.
b) Chemicals used, giving name, code number and function i.e. passivating agent, anti-
Scaling, dispersant, bio-dispersant, biocide and any other specific chemicals along with
active matter, concentration and percentage kill of biocides.
c) Dozing rates, monthly consumption as well as yearly consumption of chemicals for each
Cooling Tower. This shall include the quantity of sulphuric acid, chlorine as well as soda
ash (if required). These shall be supported by design calculations.
4.7.2 The treatment program for each cooling tower should be separately indicated for (a) Pre-
cleaning and passivation, (b) Normal Treatment, (c) Contingency treatment for each
contingency tower wise.
Vendor shall submit complete procedure and time required for the change-over of the new
treatment.
4.7.3 Detailed description of the philosophy and working of the automatic feed monitoring and
dosing system (wherever applicable). 4.7.4 Source of supply of the chemicals, including quality control system.
4.7.5 Details regarding similar experience in implementing cooling water treatment programs.
These shall include name, location and details of the plant, specification of treatment system,
period of operation, analysis / inspection report.
4.7.6 Data sheets containing product specifications, special precautions for handling the
chemicals, disposal of empty containers, remedial measures to be taken in case of
spillage and ingress into human body etc. shall be furnished.
4.7.7 The chemicals shall be supplied in good quality containers. Vendor shall take back all the
used containers.
4.7.8 The chemicals that shall be left over after the contract is closed shall normally be taken
back by the vendor. However in case, it is desired by NFL, then full/part of the left over
chemicals shall be retained by NFL and the payment against the same shall be made separately.
4.8 Splitting of Contract
All cooling towers in the Unit shall be clubbed in a single package for the purpose of bid
evaluation and subsequently placement of order.
4.9 Availability of chemicals without interruption
27
Bidder shall guarantee supply of chemicals as per agreed schedule without interruption. Normal
schedule of supplies shall be every three months, so that the site inventory level does not
fall below 2 month’s requirement. Additional one-month’s chemicals are considered
during transit. However, during last month of the contract period, the spare inventory of
regular chemicals as mentioned above shall not fall below one month’s requirement.
Further the pre-cleaning, passivation and contingency chemicals leftover at the end of the
contract shall be taken back by the vendor and NFL shall recover the corresponding
amount from the vendor, if already paid for.
---------------------------
Annexure-I
N.F.L. BATHINDA UNIT
Normal Make up water analysis.
Months
Characteristics July
Aug Sep Oct Nov Dec Jan Feb Mar April May June
TH 92 91 88 88 97 102 101 106 104 105 110 104
28
Ca – H 69 66 64 62 70 73 71 75 73 73 77 71
Mg – H 23 25 24 26 27 29 30 31 31 32 33 33
Chloride 5 5 5 5 5 5 5 5 5 5 5 5
M-alk 63 65 63 65 71 74 74 74 74 73 75 74
Silica as Sio2 3.08 2.92 3.12 3.25 3.3 3.33 3.20 2.98 2.87 2.98 3.03 3.12
pH 7.8 7.8 7.8 7.8 8.0 8.0 8.0 8.0 7.9 7.8 7.8 7.8
Annexure-II (a)
AMMONIA PLANT EXCHANGERS’ DATA Exchanger Name/Code Cooling Water in
Tube side/Shell side
Material of
Construction of tubes Heat Duty
(MKcal/Hr.)
A-BE-001-GB-5 Condenser Tube side SS 2.5
A-EA-102-A/B Carbon Scrubber Water
Cooler
T.S. SS 4.476
A-EA-103-A/B Return Water Cooler T.S. SS 4.476
A-EA-104-A/B Gasifier C.W. Cooler T.S. SS 0.30
A-EA-106 Slurry Tank Condenser T.S. SS 1.70
A-EA-108 Condensate Cooler T.S. SS 1.80
A-EA-203 Recycle Gas Cooler Shell side MS 0.053
A-EA-208-A/B Claus Gas Condenser T.S. M.S. 1.90
A-EA-603 Synthesis Water Cooler Shell side S.S. 8.20
A-GB-001 Surface condenser Tube side SS 30.214
AGB-001-E1 Inter-cooler T.S. SS 6.93
AGB-001-E2 After cooler T.S. SS 6.765
AGB-002-E1 Inter cooler Shell side SS 0.531
AGB-002-E2 -do- SS 0.778
29
AGB-002-E3 Shell side SS 0.873
AGB-002-E4 -do- SS 0.758
AGB-002-E5 -do- SS 0.8522
AGB-002-E6 -do- SS 0.9995
AGB-002 S.C. Tube side SS 14.5
AGB-004 S.C. -do- SS 11.874
GB-004-E1 -do- SS 0.993
GB-004-E2 -do- SS 1.462
GB-004-E3 -do- SS 1.156
AGB-004-E4 -do- SS 1.33
AGB-601 S.C. -do- SS 22.2
AGB-601-E1 Shell side SS 3.485
AGB-601-E2 -do- SS 3.663
AGB-601-E3 -do- MS 2.358
AGC-601 S.C. Tube side SS 7.35
AGC-601-E1-A/B Ammonia Condenser -do- SS 10.1
AGB-001-T Ejector Condenser -do- SS 0.0773/0.1505
AGB-004-T -do- SS 0.607/0.105
AGB-601-T -do- SS --
AGC-601-T -do- SS --
AGB-001-E4-A/B -do- SS --
AGB-002-E A/B Tube side SS 0.317
AGB-004-E6-A/B -do- SS 0.162
AGB-601-E4-A/B -do- SS --
AGC-601-E2 -do- SS --
AGA-402-A-T L.O. Cooler -do- M.S. 0.0122
AGA-404-A-T L.O. Cooler -do- M.S. 0.0122
AGA-701 S.C. -do- SS 8.320
AGA-701-T E.C. -do- SS --
AGA-701-E1-A/B -do- SS 0.066
AGC-001-EA-1 (KPC) -do- SS --
A-BE-001 GB-5 L.O.Cooler -do- SS
ABE-401 EA-4 (ARU) -do- SS 7.2
ABE-401-EA-5-A/B (ARU) -do- SS 9.8
Annexure-II (b)
UREA PLANT HEAT EXCHANGER DATA SHEET -
Sl.No. Name of Exchanger Heat Duty Material of Construction CW Flow
IN
MMKCal/hr
Shell Tube
1 Condensate cooler U-EA-103 0.727 SA 516G x 60 SS-304 Tube
2. Turbine. Surface Cond.U-EA-104 10.800 IS-2062 SS-305 Tube
3. High Pr.Ab. Cooler U-EA-401 - SA 516 GH 70 Tube
3 -
4 Low Pr. Absorber UEA-402 7.252 SA-249 GH 304 SA-213 TP304 Tube
5 Purge NH3 Cond. UEA-403 3.83 SA 516 Gr 60 SS-304 Tube
6 NH3 Condenser UEA-404 A-E 3.028 x 5 SA 516 Gr 61 SS-304 Tube
7 NH3 Recovery Ab. UEA-405 (1/4,2/4, 3/4, 4/4) 0.586
SA 516 Gr 62 SA-304 Tube
0.244
30
0.16
8 Off gas condenser UEA-406 2.088 SA-240 Gr. 304
SA-213 TP 304 Tube
9 Off gas abs. Final cooler 0.0909 SA-240 Gr. 305 SA-213 TP 305 Tube
10 Cooler for UDA-402 UEA-408 1.011 SA-240 Gr. 306 SA-213 TP 306 Tube
11 UGB-101 E1 1.10 A-515 Gr. 60 SS-304 Shell
E2 1.86 A-515 Gr. 61 SS-304 Tube
E3 1.40 A-515 Gr. 62 SS-304 Tube
12 CO2 booster oil cooler SA-106 Gr.B SS-304 Tube
13 CO2 booster turbine ejector condenser UGB-101-E5 - IS-2026 A-249 TD 304 Tube
14 Inter cooler for GB-102 U-EA-107 1.800 SS-41 A-213 TP-304 Shell
15 UGB-102 LO Cooler 0.0227 STPG-38 A 53
Gr.A SS-304 Tube
Annexure II (C)
HEAT EXCHANGER DATA SHEET – CPP (BATHINDA)
Name of
Exchanger
Heat Duty Material of
Construction
CW Flow in
Surface Condenser of
TG-1 & 2
22 x 106
Joules/sec S.S. 304 TUBE
31
32
Annexure-B
FORMAT FOR PRICE BID
(COOLING TOWERS)
(FOR CALCULATING LANDED PRICE SEE NOTES BELOW)
2. Online Change Over (at the start of treatment prior to commencement of stabilization period) Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Description of
material
Basic Rate
Rs. Per Kg.
Quantity
( Kg.)
Amount Quantity
( Kg.)
Amount Quantity
( Kg.)
Amount
Total quantity (Kg) ) Total Value (Rs.)
3. Initial Fill (if required refilling) after Shutdown Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Description of
material
Basic Rate
Rs. Per Kg.
Quantity for
one charge (Kg)
Amount
Quantity for
one charge (Kg)
Amount
Quantity for
one charge(Kg)
Amount
Total quantity (Kg) Total Value (Rs.)
4. Pre-cleaning/Biocleaning after Shutdown Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Description of
material
Basic Rate
Rs. Per Kg.
Quantity for
one
charge(Kg)
Amount
Quantity for
one
charge (Kg)
Amount
Quantity for one
charge(Kg)
Amount
Total quantity (Kg) Total Value (Rs.)
33
5. Passivation after Shutdown Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Description of
material
Basic Rate
Rs. Per Kg.
Quantity for
one
charge(Kg)
Amount
Quantity for
one
charge (Kg)
Amount
Quantity for one
charge(Kg)
Amount
Total quantity (Kg) Total Value (Rs.)
6. Contingency Chemicals for Oil Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Description of
material
Basic Rate
Rs. Per Kg.
Quantity (Kg)
for
one charge
Amount
Quantity (Kg) for
one charge
Amount
Quantity (Kg) for
one charge
Amount
Total quantity (Kg) Total Value (Rs.)
7. Contingency Chemicals for Ammonia Ammonia Cooling Tower Urea Cooling Tower Description of
material
Basic Rate Rs. Per Kg.
Quantity (Kg) for
one charge
Amount
Quantity (Kg) for
Three charge
Amount
Total quantity (Kg) Total Value (Rs.)
8. Contingency Chemicals for Urea ( If ingress of Urea is more than 10ppm) Ammonia Cooling Tower Urea Cooling Tower Description of
material
Basic Rate Rs. Per Kg.
Quantity (Kg) for
one charge
Amount
Quantity (Kg) for
one charge
Amount
Total quantity (Kg) Total Value (Rs.)
34
9. Free issue chemicals to be supplied by NFL. Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower Total quantity (Kg) Description of material
Quantity for one year (Kg.) based on 365
days
Quantity for one year (Kg.) based on 365
days
Quantity for one year (Kg.) based on 365
days
a) Chlorine a) Sulphuric Acid
10. Soda Ash (As per Para 3.2.1(b) Of Section B of Technical Section) CHEMICAL BASIC PRICE RS./Kg. Landed price in Rs./Kg.
Soda Ash
NOTE :
1. No other cost shall be admissible other than stated above.
2. Transit Insurance shall be arranged by the supplier at their cost.
3. Vendor should intimate following considered for arriving ‘LANDED PRICE’
A) Excise duty rate (if any) payable extra ………………………………………………… = ______ %
B) Education Cess on Excise duty (if any) payable extra………………………………… = ______ %
C) Central /Sales Tax rate (if any) payable extra
or Local VAT rate (if any) against VAT D-1 Form ……………………………. = ______ %
D) Freight upto NFL Stores Bathinda (if any) payable extra in Rs. Per Kg against vendor bill for supply = ______ Rs. Per Kg.
35
E) Entry Tax as applicable ……………………….…………………………………………… = ______ %
4. The ‘LANDED PRICE’ for above price bid format must be calculated as per following on NFL Stores basis:
LANDED PRICE (RS./KG) = (BASIC RATE (RS./KG) X TOTAL QUANTITY) + (EXCISE DUTY) + (EDUCATION CESS ON EXCISE DUTY) + SALES TAX + FREIGHT
UPTO NFL STORES BATHINDA + ENTRY TAX
5. Any chemical not attracting ‘Excise Duty & Education Cess’ must be clearly confirmed in the quotation & accordingly landed price for said chemical must be calculated without (excise
duty + cess) in the price bid format.
6. TDS will be deducted as per prevailing Govt. rules, if applicable.
DATED :
SIGNATURE
36
ANNEXURE- A
PROFORMA FOR SCHEDULE OF QUANTITIES AND RATES
1. Regular Treatment Chemicals:-
Ammonia Cooling Tower Urea Cooling Tower CPP Cooling Tower
S.
No.
Product Quantity for 365days
of plant operation in
Kg.
Basic
Unit
Rate
(Rs)/
Kg.
Amount
(Rs)
Quantity for
365 days of
plant operation
in Kg
Basic
Unit
Rate
(Rs)/Kg
Amount
(Rs)
Quantity for
365 days of
plant operation
in Kg
Basic
Unit Rate
(Rs)/Kg
Amount
(Rs)
Total Amount (Rs)
(Sum of Columns
3 + 6 + 9)
1 2 3 4 5 6 7 8 9
1. Chemical A
2. Chemical B
3. Chemical C
4. Chemical D
5. Chemical E
6. Chemical F
7. Chemical G
