Tender Document For Fabrication, errection and ......Structural Fabrication for Assembly plaftoms – Mild Steel and SS Hand rail 4 | P a g e fabrication, surface preparation, site

Structural Fabrication for Assembly plaftoms – Mild Steel and SS Hand rail

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Tender Document

For

Fabrication, errection and commissioning of

Structural Assembly platforms for ASMP project

Satish Dhawan Space Centre SHAR

Indian Space Research Organization

Sriharikota

October 2018


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Table of Contents

1. Scope of the Tender ........................................................................... 3

1.1 Introduction ..................................................................................... 3

2. General Terms and Conditions .............................................................. 4

2.1 Instruction to Bidders .......................................................................... 4

2.2 Publicity Related To Tenders ............................................................... 6

2.3 Site Visit .......................................................................................... 6

2.4 Validity of Offer ................................................................................ 6

2.5 Cost of Bidding .................................................................................. 6

2.6 Arbitration ....................................................................................... 6

2.7 Performance Bank Guarantee ............................................................... 8

2.8 Liquidated Damage ............................................................................ 8

2.9 Security Deposit ................................................................................ 8

2.10 Earnest Money Deposit ..................................................................... 8

2.11 Force Majeure ................................................................................. 9

2.12 Guarantee ....................................................................................... 9

2.13 Payment Terms ............................................................................... 9

2.14 Delivery ....................................................................................... 10

2.15 Packing & Forwarding .................................................................... 10

3. Documents Comprising the Bid ...........................................................10

3.1 Part – I Technical ............................................................................ 10

3.2 Part – II Priced Commercial Bid ......................................................... 11

3.3 Bid Submission ................................................................................ 11

3.4 Bid Evaluation ................................................................................ 12

4. Scope of Work ................................................................................13

4.1 General structural fabrication works. ................................................... 13

a) Twin assembly platform for Assembly & Decoring operations at ADF as per drawing No:

10-03-55-282/A1 – 01 Nos, 10 sheets .....................................................13

b) Assembly platform for S139 segments at New Casting Facility (NCF) as per drawing No:

10-03-55-284/A1 – 01 Nos, 8 sheets ......................................................13

c) Assembly platform for S139 segments at New Curing Facility (N.CuF) as per drawing No:

10-03-55-285/A1 – 01 Nos, 8 sheets ......................................................14

4.2 Inspection & Testing ........................................................................ 14

4.3 Equipment & Services to be provided by the Supplier ............................... 14

4.4 Equipment & Services to be provided by the Department .......................... 17

5. Specifications for the supply of Raw materials for structural fabrication works. ..17


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5.1 Structural steel ................................................................................ 17

5.2 Stainless Steel Hand rails fabrication, errection and commissioning: ............ 18

6. Specifications for Fabrication, erection, testing & commissioning: ..................20

6.1 General .......................................................................................... 20

6.2 Fabrication Procedure ....................................................................... 20

6.3 Assembly ........................................................................................ 22

6.4 Welding ......................................................................................... 22

6.5 Bolting ........................................................................................... 28

6.6 Splicing .......................................................................................... 28

6.7 Machining & Grinding ...................................................................... 28

6.8 Erection ......................................................................................... 29

6.9 Load Test ........................................................................................ 30

6.10 Painting and corrosion protection....................................................... 31

7. General Terms ................................................................................31

1. Scope of the Tender

1.1 Introduction

1.1.1 The scope of this purchase order covers supply of raw materials,


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fabrication, surface preparation, site fabrication and erection,

painting, inspection and testing of structures and miscellaneous items at Solid

Propellant Space Booster Plant(SPROB),SDSC SHAR as per given specifications given in

this annexure.

1.1.2 It is not the intent to specify completely herein all details of supply, manufacture and

construction of ‘structural fabrication works’. However, the steel work, materials and

services shall conform in all respects to the relevant latest IS standards of workmanship

and be capable of performing in continuous commercial operation in a manner

acceptable to the DEPARTMENT.

1.1.3 Party shall carry out the fabrication based on the actual drawings provided by

department.

2. General Terms and Conditions

2.1 Instruction to Bidders

2.1.1 One set of proposal document is issued. Bidder shall sign and stamp each page of

proposal as a token of his acceptance & submit along with his offer. Document shall

be scanned and uploaded in e-procurement portal.

2.1.2 Proposal documents shall remain the property of Department and if obtained by one

intending Bidder shall not be utilized by another without the consent of the

Department.

2.1.3 The proposal shall be completely filled in all respects and shall be submitted together

with requisite information. Any offer incomplete in any particulars is liable for

rejection.

2.1.4 Bidders shall set their quotations in firm figures and without qualifications or

variations or additions in the terms of the Proposal documents. Proposal containing

qualifying expressions such as "subject to minimum acceptance" or "subject to prior

sale" or any other qualifying expressions or incorporating terms and conditions at

variance with the terms and conditions incorporated in the Proposal documents are

liable for rejected.

2.1.5 Cost quoted shall be firm and fixed.

2.1.6 Price shall be quoted in Indian National Rupee only.

2.1.7 Successful Bidder shall identify a project team, submit project execution plan and

work break down chart, detailing the methodology of execution (process plan) within

15 days from the date of issue of purchase order.

2.1.8 Bidder should award any part of the work under the scope of this tender to any sub

vendor only after obtaining necessary approval from the department. Bidder shall

submit relevant information as required by the department to evaluate the

capabilities of sub vendor. Department has every right to accept or reject the proposal


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submitted. Approval of the department is no way relieves the bidder from his

responsibility and the bidder is wholly responsible for execution of work as per the

specifications, terms, and conditions mentioned in this document.

2.1.9 If bidder is planning to subcontract any part of this tender document, then the bidder

shall indicate clearly such of those works planned to offload to his sub-vendor in

their offer.

2.1.10 The erection works at this facility requires that, the party (successful bidder) shall

adhere to good daily housekeeping practices. During erection, the party shall keep all

work and storage areas used by them free from accumulation of waste materials.

Scrap shall be removed from the site to the satisfaction of the Department.

2.1.11 Satish Dhawan Space Centre – SHAR (SDSC-SHAR), Sriharikota is declared as

prohibited place under official secrets act 1923. Hence during execution of site works

necessary security requirements enforced by the department from time to time shall

be followed strictly.

2.1.12 During the erection, testing and commissioning of equipment at site in Sriharikota,

the supplier has to make his own arrangements for boarding, lodging and

transportation of his men and materials. However, subjected to availability, hostel

accommodation may be provided by the Department (SDSC SHAR) on chargeable

basis.

2.1.13 Free electricity and water will be provided by the Department at one location close

to the site (SDSC SHAR) for the erection, testing and commissioning works. Bidder

shall take this into account while quoting the price. Distribution of water and

electricity from site to the required location shall be taken care by the party.

2.1.14 Before starting the site work (at SDSC SHAR), the party shall provide insurance as

per workman compensation act to all his personnel working at site in Sriharikota

against accidents. Insurance for the same shall be borne by the party.

2.1.15 Till commissioning of equipment, the safe storing and handling of all equipment is

in the scope of supplier.

2.1.16 Quote shall be based on F.O.R. Delivery at place.

2.1.17 All Taxes and duties applicable shall be indicated clearly in quotation.

2.1.18 Transportation & Transit Insurance are fully in the scope of supplier and the same

shall be borne by the party.

2.1.19 IGST:As per the Notification No.47/2017-Integrated tax (rate) dtd.14.11.2017 issued

by the Government of India, Ministry of Finance (department of revenue), we are

eligible for reduced rate of 5% IGST. We will provide Exemption certificate as

required under the said notification along with the purchase order.

2.1.20 Necessary care shall be taken during erection and commissioning of equipment at


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our site. Any damage to the property of Department shall be adequately

compensated by the Party.

2.2 Publicity Related To Tenders

2.2.1 Advertisements, press release or other specialized publicity documents, which are

related to or reveal the existence of a tender and are intended by the Bidder for public

distribution and/or the press, broadcasting, or television, shall be cleared/approved by

the Department.

2.2.2 The Department may direct the Bidder to withhold such publicity or to require

modifications to the publicity material. The Bidder shall comply with such direction.

2.3 Site Visit

2.3.1 Bidders may visit and examine the site and its surrounding to familiarize themselves

of the existing facilities and environment and may collect all other information

which may be required for preparing and submitting the Bid. Bidders shall visit

within 15 days from the date of tender enquiry.

2.3.2 Claims and objections due to ignorance of existing conditions or inadequacy of

information will not be considered after submission of the Bid and during

implementation.

2.4 Validity of Offer

Bid shall remain valid for acceptance for a period of Four months from the due date of

submission of the Bid.

2.4.1 The Bidder shall not be entitled during the said period to revoke or cancel his Bid or

to vary the Bid except and to the extent required by Department in writing.

2.4.2 Bid shall be revalidated for extended period as required by Department in writing.

2.4.3 In such cases, unless otherwise specified, it is understood that validity is sought and

provided without varying either the quoted price or any other terms and conditions

of Bid finalized till that time.

2.5 Cost of Bidding

2.5.1 All direct and indirect costs associated with the preparation and submission of Bid

(including clarification meetings and site visit, if any), shall be to Bidder's account

and the Department (SDSC SHAR) will in no case be responsible or liable for those

costs, regardless of the conduct or outcome of the Bid process.

2.6 Arbitration

2.6.1 In the event of any question, dispute of difference arising under these conditions or

any conditions contained in the Purchase Order, (except as to any matters the


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decision of which is specially provided for by these conditions) the same shall be

referred to the sole arbitration of the Director SDSC SHAR Office or some other

person appointed by him, it will be no objection that the arbitrator is a Government

Servant that he had to deal with matter to which the contract relates or that in the

course of his duties as Government Servant he had expressed views on all or any of

the matters in disputes or difference. The award of the arbitrator shall be final and

binding on the parties of this contract.

2.6.2 If the arbitrator be the head of the purchase office.

(a) In the event of his being transferred or vacating his office by resignation or

otherwise, it shall be lawful for his successor-in office either to proceed with the

reference himself, or to appoint another person as arbitrator, or.

(b) In the event of his being unwilling or unable to act for any reason, it shall be

lawful for the Head of the Purchase Office to appoint another person as arbitrator:

or

2.6.3 If the arbitrator be a person appointed by the Head of the Purchase Office in the

event of his dying, neglecting or refusing to act, or resigning or being unable to act,

for any reason, it shall be lawful for the Head of the Purchase Office either to proceed

with the reference himself or to appoint another personas arbitrator in place of the

outgoing arbitrator.

2.6.4 Subject as aforesaid, the Indian Arbitration and Conciliation Act, 1996 and the rules

there under and any statutory modifications thereof for the time being in force shall

be deemed to apply to the arbitration proceedings under this Clause. The arbitrator

shall have the power to the extent with the consent of the Purchaser and the

Contractor the time making and publishing the award.

2.6.5 The venue of arbitration shall be place as the purchaser in his absolute discretion may

determine. Work under the purchase order shall, if reasonably possible, continue

during arbitration Proceedings.

2.6.6 In case order is concluded on the public-Sector Undertakings, the following

Arbitration Clause will be applicable.

(a) In the event of any dispute or differences relating to the interpretation and

application of the provisions of contracts, such dispute or difference shall be

referred by either party to the Arbitration of one of the Arbitrator in the

Department of Public Enterprises to be nominated by the Secretary to the

Government of India in-charge of the Bureau of Public Enterprises.

(b) The Indian Arbitration and Conciliation Act, 1996 shall not be applicable to the

Arbitration under this clause.

(c) The award of the arbitrator shall be binding upon the parties to the dispute

provided; however, any party aggrieved by such award may make a further

reference for setting aside or revision of the award to the Law Secretary,


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Department of Legal Affairs, Ministry of Law & Justice, Government of India.

Upon such Additional Secretary when so authorized by the Law Secretary whose

decision shall bind the parties finally and conclusively.

(d) The parties to the dispute will share equally the cost of arbitration as intimated by

the arbitrator.

2.7 Performance Bank Guarantee

2.7.1 PBG at 10% of the value of the Purchase Order shall be submitted through bank

guarantee from any of the Scheduled Banks executed on non-judicial stamp paper of

appropriate value, and shall be valid for a period of sixty days beyond the date for

completion of warranty period.

2.8 Liquidated Damage

2.8.1 Time is the essence of this order. If the supplier's defined scope of work is not made

by the end of delivery period, liquidated damage will be levied @ 0.5 % per week or

part thereof subject to a maximum of 10% of value of undelivered stores.

2.9 Security Deposit

2.9.1 Party shall submit security deposit, within 15 days of Order Acknowledgement, for

10% of the total order value. Security Deposit shall be obtained through Bank

Guarantee or fixed deposit receipt from any of the Scheduled Banks executed on non-

judicial stamp paper of appropriate value, and shall be valid for a period of sixty days

beyond the date for completion of the Purchase Order.

2.9.2 In case the vendor fails to furnish the security deposit within the specified date or

extended due date, the Purchase Order/Contract shall be cancelled, and the EMD, if

any, made earlier shall be forfeited, and, in addition, appropriate penal action will be

taken.

2.9.3 Central PSUs/PSEs/Autonomous Bodies/MSEs shall be exempted from the payment of

Security Deposit, and instead, an Indemnity Bond shall be submitted by them in lieu

of the Security Deposit.

2.10 Earnest Money Deposit

2.10.1 Party shall submit EMD of Rs. 1.4 Lakh. EMD shall be submitted in a single

instalment through Demand Draft/Banker’s Cheque /Fixed Deposit Receipts or Bank

Guarantee from any of the Scheduled Banks executed on non-judicial stamp paper of

appropriate value.

2.10.2 Central PSUs/PSEs/Autonomous Bodies, Micro and Small Enterprises, KVIC,

National Small Industries Corporation, etc. are exempted from the payment of EMD.

2.10.3 Parties who are registered (registered and empanelled) at Satish Dhawan Space

Centre e-procurement portal are also exempted from the payment of EMD.


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2.10.4 In case of bank guarantee, it shall be valid for a period of 45 days beyond the final

tender validity date.

2.10.5 Any tender not accompanied with EMD shall be treated as invalid tender and

rejected. Vendors seeking exemption from payment of EMD shall submit necessary

proof like registration number, etc.

2.10.6 EMD of a vendor shall be forfeited if the tenderer /Contractor withdraws or amends

his tender or deviates from the tender in any respect within the period of validity of

the tender.

2.10.7 Failure to furnish security deposit by a successful vendor within the specified period

shall also result in forfeiture of EMD.

2.10.8 EMD shall be refunded to all the unsuccessful vendors within thirty days after

placement of the Purchase Order.

2.10.9 EMD shall be refunded to the successful tenderer/Contractor after payment of the

Security Deposit or may be adjusted against the Security Deposit.

2.10.10 EMD shall be refunded to all the participants in cases where the tender is

cancelled or withdrawn by the Centre/Unit, within thirty days from the date of such

cancellation or withdrawal.

2.11 Force Majeure

2.11.1 Should a part or whole work covered under this agreement be delayed due to

reasons of Force Majeure which shall include legal lockouts, strikes, riots, civil

commotion, fire accident, quarantines, epidemic, acts of God and Government, fright

embargoes, the completion period for work, plant or equipment referred to in this

agreement be extended by a period not in excess of the duration of such Force

Majeure. The occurrence shall be notified by either party within reasonable time.

2.12 Guarantee

2.12.1 The Equipment and related accessories shall be guaranteed against any

manufacturing defects for a period of 12 months from the date of commissioning. For

defects noticed during the guarantee period, replacement rectification should be

arranged at free of cost within a reasonable period of such notification.

2.13 Payment Terms

2.13.1 The payment will be made only on weight basis for the items based on the actual

weight of the finished product fabricated / erected at site on pro-rata basis.

2.13.2 Wherever advance payment is requested, Bank Guarantee from any Nationalized

Bank/Scheduled Bank should be furnished. In case of advance payments, if the party

is not supplying the material within the delivery schedule, interest will be levied as

per the Bank Lending Rate plus 2% penal interest.


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2.13.3 Interest will be loaded for advance payments/stage payments as per the lending rate

of Bank and will be added to the landed cost for comparison purpose. In case of

different milestone payments submitted by the parties, a standard and transparent

methodology like Net Present Value (NPV) will be adopted for evaluating the offers.

2.14 Delivery

2.14.1 Delivery schedule is essence for this contract. Party shall adhere to the delivery date

mentioned in this tender for individual and same shall be confirmed along with the

offer. In case Party is unable to meet the delivery schedule, the offer is liable for

rejection.

2.14.2 Delivery schedule shall be as given below:-

Sl. No. Item Description Delivery date from the date

of award of Purchase Order

1. Placement of PO T

2. Fabrication, Erection and commissioning 12 Months from the date of

site clearance

Note: party has to execute work after obtaining necessary site clearance from the

department. Party has to deploy the manpower within 7 days from the date of site

clearance for start of the work. Based on the need and priority, party has to mobilize

the man power at different facilities within SPROB

2.15 Packing & Forwarding

2.15.1 The tenderer will be held responsible for the stores being sufficiently and properly

packed for transport by rail, road, sea or air, to withstand transit hazards and ensure

safe arrival at the destination. The packing and Marking of packages shall be done by

and at the expenses of the Contractor.

3. Documents Comprising the Bid

This is e-procurement tender. All the documents need to be scanned and attached to

the bid under “documents solicited from Vendor” form.

Offers shall be sent online only using standard digital signature certificate of class III

with encryption / decryption. The tenders authorized online on or before the open

authorization date and time only will be considered as valid tenders even though the bids are

submitted online.

The tenderer must authorize bid opening within the time stipulated in the schedule

by SDSC SHAR. Otherwise the online bid submitted will not be considered for evaluation.

On-line bids shall consist of the following: -

3.1 Part – I Technical

3.1.1 Technical part shall comprise the following documents/information. All the


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documents shall be scanned and uploaded in the SDSC SHAR e-procurement portal.

3.1.2 Submission of bid letter along with one set of proposal document duly signed and

stamped as token of acceptance. Scanned copy shall be uploaded in the ISRO e-

procurement portal.

3.1.3 Power of attorney in favour of authorized signatory of the bid/ proposal documents.

3.1.4 Latest income tax clearance certificate.

3.1.5 Latest solvency certificate from a scheduled bank as detailed in bid qualification

criteria.

3.1.6 List of projects in hand & completed during last five financial year indicating the

name of client with contact details.

3.1.7 List and make of the bought out components as well as imported items

3.1.8 Any other relevant document, bidder desires to submit.

3.1.9 Confirmation w.r.t bid qualification criteria as per Annexure.

3.1.10 Compliance statement as per Annexure.

3.1.11 Detailed QAP shall be submitted by the party after placement of order.

3.1.12 Deviations, if any, w.r.t technical and commercial terms & conditions shall be

clearly brought out under deviation list Annexure-4. If deviations are not listed

separately, it will be presumed that you are adhering to all the specification and terms

& conditions given in this document.

Note: All the above documents shall be uploaded in the ISRO e-procurement portal.

3.2 Part – II Priced Commercial Bid

3.2.1 Priced commercial bid shall contain schedule of prices and shall be filled in ISRO e-

procurement portal. No deviations, terms and conditions, assumptions, discounts etc.

shall be stipulated in price bid. Department will not take cognizance of any such

statement and may at their discretion reject such bids.

3.3 Bid Submission

3.3.1 Bid shall be submitted in two parts

Part -1 Techno-Commercial Part of the Bid

Part-2 Price Part of the Bid

3.3.2 Offers should be submitted On-line using standard digital signature of class-3 with

encryption/decryption options.

3.3.3 The tenders authorized online on or before the open authorization date and time will

only be considered as valid tenders.

3.3.4 Prices shall be mentioned in the space/column provided in the ISRO e-procurement


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portal only for such purpose.

3.3.5 Physical copy of the bid will be accepted only in case if the file size is bigger and not

possible to upload the same. In such case, the hard copy shall be submitted within

due date. Documents received after due date will not be considered.

3.3.6 Prices quoted should be on the basis of Delivery at Place (DAP), Sriharikota.

3.3.7 The purchaser will not pay separately for transit insurance and same shall be included

in the cost quoted by the Bidder.

3.3.8 All risks in transit shall be exclusively borne by the contractor and the purchaser shall

pay only for such items as are actually received in good condition in accordance with

the purchase order.

3.3.9 Bids duly filled in by the Bidder should invariably be submitted as stipulated in the e-

procurement portal.

3.3.10 Department may open Part – I of the bid on the due date of opening at convenience.

Price Bid (Part-II) of the bid of the technically and commercially acceptable bids shall

be opened at a later date.

3.3.11 Department reserves the right to reject any or all the Bids without assigning any

reasons thereof.

3.4 Bid Evaluation

3.4.1 The bidder shall provide all the relevant data/information/details required for

evaluating the bid technical and commercially in the specific formats enclosed with

the tender. Apart from this, Bidder is free to add any other relevant information.

3.4.2 During evaluation, Department may request Bidder for any clarification on the bid/

additional documents/ information required. Bidder shall submit all clarifications/

additional documents/ information requested in original. If not submitted within the

stipulated time department has right to reject such bids.

3.4.3 Techno-commercial discussion shall be arranged with Bidder, if needed. Bidder shall

depute his authorized representatives for attending discussions.

3.4.4 The complete scope of work is defined in the Proposal document. Those Bidders who

undertake total responsibility for the complete scope of work as defined in the

Proposal document will only be considered.

3.4.5 In case Bid does not fully comply with the requirement of Proposal document and the

bidder stipulates deviations to the clauses of the proposal, which are unacceptable to

the Department, the Bid will be rejected.

3.4.6 Performance of Bidder on similar nature of works executed/ under execution shall be

taken into consideration before selecting the Bidder for opening his price bid.

3.4.7 The time schedule for completion is given in the Proposal document. Bidder is


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required to confirm the completion period unconditionally.

3.4.8 Department shall not be obliged to furnish any information / clarification to

unsuccessful bidder as regard non acceptance of their Bids.

4. Scope of Work

4.1 General structural fabrication works.

4.1.1 The scope of this purchase order covers supply of raw materials, fabrication, surface

preparation, site fabrication and erection, painting, inspection and testing of structures,

transportation to site, unloading, storage at site, fabrication at site, errection of

fabricated structures and miscellaneous items as per details given in the assembly

platform drawings at Assembly Decoring facility (ADF), New Casting Facility(NCF)

and New Curing Facility (N.CuF) in Solid Propellant Space Booster Plant (SPROB)

under ASMP project at Sriharikota as per Table-1 of this tender document.

Table-1 List of Works to be carried out by the Party

Sl. No. Item Description Weight

(kgs)

1

Ssupply, fabrication, erection & painting and testing

of Structural steel for assembly platforms for ASMP

project facilities

50550

3 Supply, fabrication & erection of Stainless steel (SS

304) hand rails for assembly platforms 1800

4.1.2 It is not the intent to specify completely herein all details of supply, manufacture and

construction of ‘structural steel work’. However, the steel work, materials and services

shall conform in all respects to the relevant latest IS standards of workmanship and be

capable of performing in continuous commercial operation in a manner acceptable to

the DEPARTMENT.

4.1.3 Party shall carry out the fabrication and errection of structures based on the actual

Assembly platform drawings and other Misc drawings provided by department. Major

scope of work involves fabrication of structures as per Approved Assembly platform

drawings, errection and commissioning at different Constructed facilities of ASMP. The

details of structural platforms to be fabricated are as below:

a) Twin assembly platform for Assembly & Decoring operations at ADF as per

drawing No: 10-03-55-282/A1 – 01 Nos, 10 sheets

b) Assembly platform for S139 segments at New Casting Facility (NCF) as per



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c) Assembly platform for S139 segments at New Curing Facility (N.CuF) as per


d) Apart from the above, party shall carryout minor fabrication works based on

the site requirement as per the drawings given by the department. Weight

indicated in the drawings is only indicative. Payment may be made only

based on the actual weight of the fabricated items including supply of

platforms.

e) Any minor machined items like brackets, bearings, pins etc shall be fabricated

by the party as per requirement of assembly platform fabrication drawings

enclosed along with tender.

4.2 Inspection & Testing

4.2.1 For Scope of Work defined above, arrangements shall be made by the supplier for the

inspection and testing during different stages of its manufacture starting from the raw

materials till the completion of works, as declared by SDSC SHAR.

4.3 Equipment & Services to be provided by the Supplier

4.3.1 Supply of raw materials to site including, but not limited to

a. Structural steel (Make: - SAIL, Jindal, Vizag steel, Tata, Essar)

Chequered plates, plain sheets/plates, Channels, tubes, bolts, Angles etc. required

for respective structural steel works as per relevant IS standard.

b. Stainless steel raw materials i.e. pre polished handrails, vertical members

,supporting members , plates , tubes required for respective works shall be of SS

304 and the workmanship shall comply with relevant IS standard.

4.3.2 Wherever drawing is not provided, Party shall take necessary measurements at site

for fabrication. The workmanship shall comply with relevant IS standard.

4.3.3 Material test certificate from government approved lab shall be

provided by the party.

4.3.4 Inspection & qualification tests as per standard manufacturing

procedures.

4.3.5 Supervision of fabrication/ erection.

4.3.6 100% DP test for root and final welds before and after load test.

4.3.7 DP test certificate shall be provided by the party.

4.3.8 DP test inspection will be carried out by Department.

4.3.9 Procurement of plates of thickness 20mm or more with UT Quality.

4.3.10 Erection, testing and commissioning at site.

4.3.11 Provisions for fixing anchor fasteners and the erection of anchor fasteners to be


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carried out by the vendor wherever embedded plates are not available. Anchor

fasteners will be provided by the department.

4.3.12 Holes drilling (up to 20mm size) if any required shall be carried out using drilling

machine.

4.3.13 Grinding of sharp edges to smooth finish.

4.3.14 Party shall carryout load test of the structure as per the requirement of department

engineer. Test loads/Dummy loads required shall be arranged by the department

at site.

4.3.15 Party shall bring all consumables, machinery and man power required to carry out

fabrication work, including cutting, welding grinding and drilling of holes up to dia.

of 16mm.

4.3.16 The party shall bring the consumables such as electrodes, filler rods, grinding wheels,

industrial gases(oxygen/acetylene), Argon for TIG, DP test kit, face shields, gloves,

wire brush, paints, U-clamps, emery paper, cotton waste and any other hand / power

tools required for completion of the work.

4.3.17 Painting of all the structures fabricated by the Party (except stainless steel hand rails).

4.3.18 Party shall apply one coat of high build epoxy primer and two coats of

Aliphatic/acrylic polyurethane finish paint of Asian/Nerolac/Berger make paints to

the fabricated items

4.3.19 Material test certificate from government approved lab shall be provided by the party.

Party shall carryout 100% DP test for all welds.

4.3.20 Provisions for fixing anchor fasteners and the erection of anchor fasteners is to be

carried out by the party.

4.3.21 All hardware e.g. Fasteners, washers, clamps etc. is in the Party’s scope. No separate

claim shall be entertained, in this respect. At least 10% extra hardware shall be

provided for any installation/fixing work to ensure ready availability of hardware in

case of damage of some hardware during installation.

4.3.22 Party shall mobilise following minimum equipments for carrying out fabrication work

at our site. These items can be taken back by the party after completion of work.

Welding equipment (Arc & TIG)

Gas cutting machine

Pipe Cutting Machine

Drilling machine

Portable Grinding machine

Grouting machines for drilling in concrete.

Spray painting equipment (air supply of 10bar will be provided. Party shall bring

necessary attachments for carrying out spray painting).


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Consumables, cleaning agents, Manila ropes

Measuring and Levelling instruments

Ladders, stools, to approach different heights etc.

Other equipments/tools required for fitment and completion of job.

Party shall arrange appropriate raw materials as per the site conditions.

4.3.23 All anchor bolts / foundation bolts, nuts, washers and inserts for the erection

structures.

4.3.24 Slings, ropes, D-shackles etc., required for handling at SDSC SHAR shall be provided

by the party.

4.3.25 Minor changes, if any required to meet the functional requirement shall be

incorporated at no extra cost.

4.3.26 Shop inspection and tests as per specifications in QAP and as mentioned in this tender

shall be arranged by the bidder to enable department personnel to inspect.

Wherever not specified, the shop inspection tests shall be as per recent codes

applicable.

4.3.27 The following are minimum requirements need to be ensured by contract agency to

carry out erection work.

a) Evaluation of Machinery and Manpower and Consumables:

Machinery and manpower shall be subjected to technical evaluation by the

Department Engineer to ascertain their complete suitability / performance for the

jobs described above. Based on this evaluation clearance shall be given for taking

up the actual job. Erection Work shall be treated as commenced only when the

actual welding work is done and as per various technical conditions detailed in this

contract.

b) Manpower: Adequate skilled, semi-skilled manpower like 6G qualified TIG

welders, arc welders, fitter /fabricator, grinders, un-skilled helper gangs and site

supervisors (Diploma in Mechanical Engg) with minimum 3-5 years’ experience

carrying out similar Fabrication and erection works, shall also be deployed

throughout the contract period. Category wise Manpower shall be indicated while

quoting.One group shall contain minimum of 1 welder, 1 fitter, 1 grinder and 2

helpers. In case of site demands contractor shall mobilize additional welder,

Fitters,Helpers within 2-3 days.

c) Machinery: Requisite machinery like TIG welding machine, arc welding machine,

grinders-angle/pencil, gas cutting sets and bench / hand drilling machines and

concrete drillers, tube benders, pipe cutting machine. Minimum machinery

required are Welding Machine-2 Nos. Gas cutting Set with all accessories: 2 Nos,

Grinding M/Cs : 2 Nos, Portable Hand drilling M/Cs : 2 Nos, Concrete drilling


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Machine: 1 No. The above Machinery is minimum required. However contractor

shall mobilize the required machinery as and when required.

d) Group Insurance:

The contractor shall take Group Insurance for all the working personnel. The proof

of such claim shall be submitted immediately after awarding the contract.

e) Transportation & Material Handling:

Transport vehicles required for movement of contract personnel from /to work site

and Gate I /Sullurpet, including internal movement within site shall be in the

scope of the contractor.

f) Prefabrication Area:

Setting up of exclusive prefabrication work area for structural steel, SS hand rails

Contractor shall scrupulously maintain cleanliness of this area in line with material

being handled.

4.4 Equipment & Services to be provided by the Department

The following are the equipment and services that shall be provided by the others: -

4.4.1 EOT cranes for handling, erection and commissioning at SDSC SHAR. However, it is

the responsibility of the supplier to mobilize his team having experience in handling,

erection and commissioning of equipment.

4.4.2 Free electricity and water required for erection at SDSC SHAR.

5. Specifications for the supply of Raw materials for structural fabrication works.

5.1 Structural steel

5.1.1 This specification covers the general requirements for supply of materials required for

structural steel fabrication at Various ASMP Project facilities in Solid Propellant Space

Booster Plant (SPROB),SDSC SHAR as per the relevant standards.

5.1.2 Applicable Codes & Standards

5.1.2.1 Materials

S No Code Description

1 IS:808 Dimensions for Hot Rolled Steel sections

2 IS:2062 Steel for general structural purposes

3 IS:3502 Steel Chequered plate

4 IS:1363 Black Hexagonal Bolts, Nuts and Lock Nuts

(diameter 6 to 39 mm) and Black Hexagonal

Screws (diameter 6 to 24 mm).

5 IS 1239 Mild steel tubes, tubular and other wrought

steel fittings

6 IS:1367 Technical Supply Conditions for Threaded


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Fasteners.

7 IS: 2016 Plain Washers

8 IS: 814 Covered Electrodes for Metal Arc welding of

Structural Steels.

9 IS: 6639 Hexagon bolts for steel structures.

10 IS: 3757 High strength friction grip bolts

11 IS: 5372 Taper washers for channels.

12 IS: 6610 Heavy washers for steel structures.

5.1.2.2 Codes of Practice

5.1.3 Steel Materials

5.1.3.1 Steel materials shall comply with specifications laid down under clause 5.2.All

materials to be supplied shall be new, unused and free from defects.

5.2 Stainless Steel Hand rails fabrication, errection and

commissioning:

5.2.1 This specification covers the general requirements for supply of materials required for

SS fabrication at Various facilities in Solid Propellant Space Booster Plant

(SPROB),SDSC SHAR as per the relevant standards.

S No Code Description

1 IS: 800 Code of practice for general construction in

steel.

2 IS: 817 - Code of practice for training and testing of

metal arc welders 5. -

3 IS: 818 - Code of practice for safety and health

requirements in electric and gas welding and

cutting operations.

4 IS: 822 Code of procedure for inspection of welds.

5 IS: 4000 Code of practice for assembly of structural

joints using high tensile friction grip fasteners

6 IS: 7215 Tolerances for fabrication of steel structures.

7 IS: 9595 Recommendations for metal arc welding of

carbon and carbon manganese steel.

8 IS: 1181 Qualifying tests for metal arc welders (engaged

in welding structures other than pipes)

9 IS: 6610 Heavy washers for steel structures.

10 IS: 823 Code of procedure for manual arc welding of

mild steel.


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5.2.2 Dimensions and configuration of the hand-rail shall be as per the drawing enclosed in

Fig.1 The configuration and specification of various elements including thickness

and locations shall confirm to that provided in the drawing

5.2.3 Specifications for SS Handrail Fabrication.

5.2.3.1 Routing will be decided based on the site condition.

5.2.3.2 General dimensions and the format of the hand-rail shall be as per the below fig. The

configuration and specification of various elements including thickness and locations

shall confirm to that provided in the drawing.

Fig. 1. Hand Rail – Typical configuration

5.2.3.3 Pre-polished SS 304 pipe and other fittings like elbow, bend, bottom cup etc. shall

only be used for making of hand rail.

5.2.3.4 Stainless steel handrails, vertical members and supporting members required for

respective works shall be of SS 304 and the workmanship shall comply with relevant

IS standard.

5.2.3.5 Hand rail routing shall be as per site condition. Hand rail fabrication shall be carried

out at site after erection of platform.

5.2.3.6 All the weld areas shall be buffed and polished to mirror finish.

5.2.3.7 All the sharp edges shall be ground to obtain smooth finish.


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5.2.4 Applicable Codes & Standards

5.2.4.1 ASTM A167, Standard Specification for stainless and heat resisting chromium nickel

steel plate, sheet and strip.

5.2.4.2 ASTM A269,Standard Specification for seamless and welded austenitic stainless-steel

tubing.

5.2.4.3 ASTM A276,Standard Specification for stainless and heat resisting bars and shapes.

5.2.4.4 ASTM A312,Standard Specification for seamless and welded austenitic stainless-steel

pipe.

5.2.4.5 AWS D1.6,Structural Welding Code Stainless Steel; 2007.

5.2.5 Stainless Steel Materials

5.2.5.1 Steel materials shall comply with ASTM A 269 Type 304 or Type 316, ASTM A 276

Type 304 or Type 316, ASTM A 276/ A 479 Type 304 or Type 316.All materials to be

supplied by the Contractor shall be new, unused and free from defects.

6. Specifications for Fabrication, erection, testing & commissioning:

6.1 General

6.1.1 Fabrication of structures & Hand rails shall be done as per given drawing and site

condition. Wherever drawing is not provided, Party shall take necessary measurements

at site for fabrication Prior to commencement of structural fabrication, undulations in

the fabrication yard, if any, shall be removed and area levelled and paved by the

Contractor.

6.1.2 Any defective material used in the work shall be replaced by the Contractor at his own

expense. Necessary care and precautions shall be taken so as not to cause any damage to

the structure during any such removal and replacement.

6.1.3 Any faulty fabrication pointed out at any stage of work by the Engineer-in Charge,

shall be made good or replaced by the Contractor at his own cost.

6.1.4 Tolerances for fabrication of steel structures shall be as per IS: 7215.

6.2 Fabrication Procedure

6.2.1 Straightening & Bending

6.2.1.1 All materials shall be straight and if necessary, before being worked shall be

straightened and/or flattened (unless required to be of curvilinear form) and shall be

free from twists.

6.2.1.2 Bending of rolled sections and plates shall be done by cold process to shape/s as

shown on drawings

6.2.2 Clearances


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6.2.2.1 The erection clearance for cleated ends of members shall be not greater than 2mm at

each end. The erection clearance at ends of beams without web cleats and end plates

shall be not more than 3mm at each end but where for practical reasons, greater

clearance is necessary, suitably designed seating’s approved by the Engineer-in-

Charge shall be provided.

6.2.3 Cutting

6.2.3.1 Prior to cutting, all members shall be properly marked showing the requisite cut

length/width, connection provisions e.g. location and dimensions of holes, welds,

cleats etc. Marking for cutting shall be done judiciously so as to avoid wastages or

unnecessary joints as far as practicable. Marking shall be done by placing the

members on horizontal supports/pads in order to ensure accuracy. Marking accuracy

shall be limited to + 1mm.

6.2.3.2 Cutting may be affected by shearing, cropping or sawing. Gas cutting by mechanically

controlled torch shall be permitted for mild steel. Hand flame cutting may be

permitted subject to the approval of the Engineer-in-Charge.

6.2.3.3 Except where the material is subsequently joined by welding, no loads shall be

transmitted into metal through a gas cut surface.

6.2.3.4 Shearing, cropping and gas cutting shall be clean, square, free from any distortion &

burrs, and should the Engineer-in-Charge find it necessary, the edges shall be

ground afterwards, to make the same straight and uniform at no extra cost to the

Owner.

6.2.4 Drilling

6.2.4.1 Holes for bolts shall not be formed by gas cutting process.

6.2.4.2 Holes through more than one thickness of material of members such as compound

stanchions and girder flanges shall, where possible, be drilled after the members are

assembled and tightly clamped/bolted together. Punching may be permitted before

assembly, provided the thickness of metal is less than 16 mm and the holes are

punched 3 mm less in diameter than the required size and reamed, after assembly, to

the full diameter. Punching shall not be adopted for dynamically loaded structures.

6.2.4.3 Holes may be drilled in one operation through two or more separable parts and burrs

removed from each part after drilling.

6.2.4.4 Holes in connecting angles and plates, other than splices, also in roof members and

light framing, may be punched full size through material not over 12 mm thick,

except where required for close tolerance bolts or barrel bolts.

6.2.4.5 All matching holes for black bolts shall register with each other so that a gauge of 2

mm less in diameter than the diameter of hole shall pass freely through the

assembled members in the direction at right angle to such members. Finished holes


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shall be not more than 2 mm in diameter larger than the diameter of the black bolt

passing through them, unless otherwise specified by the Engineer-in-Charge.

Holes for turned and fitted bolts shall be drilled to a diameter equal to the nominal

diameter of the shank or barrel subject to H8 tolerance specified in IS: 9I9. Parts to

be connected with close tolerance or barrel bolts shall be firmly held together by

tacking bolts or clamps and the holes drilled through all the thicknesses in one

operation and subsequently reamed to size. Holes not drilled through all the

thicknesses in one operation shall be drilled to a smaller size and reamed out after

assembly. Where this is not possible, the parts shall be drilled and reamed

separately.

6.2.4.6 To facilitate grouting, holes shall be provided in column bases or seating plates

exceeding 300mm in width for the escape of air.

6.2.4.7 To avoid accumulation of water in gusseted column bases of laced, battened or box

type stanchions, suitable reverse U-type holes shall be provided at the junction of

base plate and column section in the vertical gussets for draining out of any water.

6.3 Assembly

6.3.1 The component parts shall be assembled and aligned in such a manner that they are

neither twisted nor otherwise damaged, and shall be so prepared that the required

camber, if any, is provided. Proper clamps, clips, jigs and other fasteners (bolts and

welds) shall be placed in a balanced pattern to avoid any distortion in the members

and to ensure their correct positioning (i.e. angles, axes, nodes etc.). Any force fitting,

pulling/stretching of members to join them shall be avoided. Proper care shall be

taken for welding shrinkage & distortion so as to attain the finished dimensions of the

structure shown on the drawings

6.4 Welding

6.4.1 General

a) All joints shall be welded unless noted otherwise on the drawings.

b) Welding shall be in accordance with IS: 816, IS: 819: 1957, IS: 1024: 1999, IS: 1261:

1959, IS: 1323: 1982 and IS: 9595, AWS D1.2, & AWS D1.6 as appropriate.

c) The Contractor shall make necessary arrangement for providing sufficient number

of welding sets of the required capacity, all consumables, cutting and grinding

equipment with requisite accessories/ auxiliaries, equipment & materials required

for carrying out various tests such as dye penetration, magnetic particle, ultrasonic

etc.

d) Adequate protection against rain, dust, snow & strong winds shall be provided to

the welding personnel and the structural members during welding operation. In

the absence of such a protection no welding shall be carried out. It shall be the

responsibility of the Contractor to ensure that all welding is carried out in


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accordance with the terms of this specification and relevant BIS codes. The

Contractor shall provide all the supervision to fulfil this requirement.

6.4.2 Preparation of Member for Welding

a) Edge Preparation

Edge preparation/bevelling of fusion faces for welding shall be done strictly as per the

dimensions shown in the drawings. In case, the same are not indicated, edges shall be

prepared (depending on the type of weld indicated in the drawing) as per the details

given in IS: 9595. Bevelling of fusion faces shall be got checked and approved by the

Engineer-in-Charge. The tolerances on limits of gap, root face & included angle shall

be as stipulated in IS: 9595

b) Cleaning

Welding edges and the adjacent areas of the members (extending up to 20mm) shall

be thoroughly cleaned of all oil, grease, scale and rust and made completely dry. Gaps

between the members to be welded shall be kept free from all foreign matter.

c) Preheating

Preheating of structural steel members shall be carried out as per IS: 9595 when the

base metal temperature is below the requisite temperature for the welding process

being used. Preheating shall be done in such a manner that the parts, on which the

weld metal is being deposited, are above the specified minimum temperature for a

distance of not less than 75mm on each side of the weld line. The temperature shall

be measured on the face opposite to that being heated. However, when there is access

to only one face, the heat source shall be removed to allow for temperature

equalization (1 minute for each 25mm of plate thickness) before measuring the

temperature

d) Grinding

i. Column splices & butt joints of struts and compression members (depending on

contact for load transmission) shall be accurately ground and close-butted over the

whole section with a tolerance not exceeding 0.2mm locally at any place. In

column caps & bases the ends of shafts together with the attached gussets, angles,

channels etc., shall be accurately ground so that the parts connected butt over

minimum 90% surface of contact. In case of connecting angles or channels, care

shall be taken so that these are fixed with such accuracy that they are not reduced

in thickness by grinding by more than 2 mm.

ii. Ends of all bearing stiffeners shall be ground to fit tightly at both top and bottom.

Similarly bottom of the knife edge supports along with the top surface of column

brackets shall be accurately ground to provide effective bearing with a tolerance

not exceeding 0.2 mm locally at any place.


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iii. Slab bases and caps shall be accurately ground over the bearing surfaces and shall

have effective contact with the ends of stanchions. Bearing faces which are to be

grouted direct to foundations need not be ground if such faces are true & parallel to

the upper faces.

6.4.3 Welding Processes

Welding of various materials under this specification shall be carried out using

one or more of the following processes

Shielded Metal arc welding(SMAW)

Tungsten Inert Gas Welding(TIG)

The welding procedure adopted and consumables used shall be specifically

approved by the Engineer-in-Charge. A combination of different welding

processes or a combination of electrodes of different classes/makes may be

employed for a particular joint only after qualifying the welding procedures to

be adopted and obtaining the approval of the Engineer-in-Charge. Welding

procedure shall cover the following:

i) Type and size of electrodes

ii) Position of welding

iii) Current and arc voltage

iv) Length of run per electrode

v) Number of run in multipass welds and arrangement

vi) Preparation of the parts

vii) Welding sequence

viii) Pre-or post heating

6.4.4 Approval & Testing of Welders

The Contractor shall satisfy the Engineer-in-Charge that the welders are suitable

for the work upon which they will be employed. For this purpose, the welders

shall have satisfied the relevant requirements of IS: 7318. If the welders will be

working to approved welding procedures, they shall have satisfied the relevant

requirements of 1S: 7310. Adequate means of identification shall be provided to

enable each weld to be traced to the welder by whom it was made. The Contractor

shall intimate the Engineer-in-Charge sufficiently in advance, the commencement

of tests, to enable him to be present to witness the same.

6.4.5 Approval & Testing of Welding Procedures

The Contractor shall carry out procedure tests in accordance with IS: 7307 to

demonstrate by means of a specimen weld of adequate length on steel

representative of that to be used, that he can make welds with the welding

procedure to be used for the work to the complete satisfaction of the Engineer-in-

Charge. The test weld shall include weld details from the actual construction and

it shall be welded in a manner simulating the most unfavourable instances of fit-

up, electrode condition etc., which are anticipated to occur on the particular


25 | P a g e

fabrication. Where material analysis is available, the welding procedure shall be

carried out on material with the highest carbon equivalent values.

After welding, but before the relevant tests given in IS: 7307 are carried out,

the test weld shall be held as long as possible at room temperature, but in any

case, not less than 72 hours, and shall then be examined for cracking. The

examination procedure shall be sufficiently rigorous to be capable of revealing

significant defects in both parent metal and weld metal.

After establishing the welding method, the Contractor shall finally submit to

the Engineer-in-Charge for his approval the welding procedure specification in

standard format given in IS: 9595 before starting the fabrication.

6.4.6 Sequence of Welding

a) As far as practicable, all welds shall be made in a sequence that will balance the

applied heat of welding while the welding progresses.

b) The direction of the general progression in welding on a member shall be from

points where the parts are relatively fixed in position with respect to each other

towards points where they have a greater relative freedom of movement.

c) All splices in each component part of a cover-plated beam or built up member

shall be made before the component part is welded to other component parts of

the member.

d) Joints expected to have significant shrinkage shall be welded before joints

expected to have lesser shrinkage.

e) Welding shall be carried continuously to completion with correct number of

runs.

f) The Contractor shall choose the welding sequence after carefully studying each

case such as to minimize distortion and shrinkage & submit the same to the

Engineer-in- Charge for comments and approval.

g) The welding seams shall be left to cool slowly. The CONTRACTOR shall not be

allowed to cool the welds quickly by any other method.

h) For multipass welding, before welding the following layer the formerly welded

layer shall be cleaned metal bright by light and wire brushing.

6.4.7 Welding Technique

a) After the fusion faces are carefully aligned and set with proper gaps, the root

pass of butt joints shall be executed properly so as to achieve full penetration

with complete fusion of the root edges

b) On completion of each run all slag and spatters shall be removed and the weld

and the adjacent base metal shall be cleaned by wire brushing and light

chipping. Visible defects such are cracks, cavities and other deposition faults, if

any, shall be removed to sound metal before depositing subsequent run of weld.

c) All full penetration butt welds shall be completed by chipping/gouging to sound

metal and then depositing a sealing run of weld metal on the back of the joints.


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Where butt welding is practicable from one side only, suitable backing steel

strip shall be used and joint shall be arranged in such a way as to ensure that

complete fusion of all the parts is readily obtained.

d) While welding is in progress care shall be taken to avoid any kind of movement

of the components, shocks, vibrations to prevent occurrence of weld cracks.

e) Any deviation desired from the recommended welding technique and electrodes

shall be adopted only after obtaining written approval of the Engineer-in-

Charge.

6.4.8 Inspection & Testing of Welds

The method of inspection shall be according to IS: 822: 1970 and extent of

inspection and testing shall be in accordance with the relevant applicable standard

or, in the absence of such a standard, as specified by the Engineer-in-Charge.

Welds shall not be painted or otherwise obscured until they have been inspected,

approved and accepted.

The Engineer-in-Charge or his representative shall have access to the

Contractor's work at all reasonable times and the Contractor shall provide him

with all facilities necessary for inspection during all stages of fabrication and

erection with, but not limited to, the following objectives.

i) To check the conformity with the relevant standards and suitability of various

welding equipment’s and their performance

ii) To witness/approve the welding procedure qualification.

iii) To witness/approve the welder’s performance qualification.

iv) To check whether shop/field welding being executed is in conformity with the

relevant specifications and codes of practice.

Inspection and testing of all fabricated structures shall be carried out by the

Contractor by any, or, a combination of all the following methods as directed by

the Engineer-in-Charge and no separate payment shall be made, unless otherwise

mentioned, for inspection and testing of welds/fabricated structures

A) Visual Inspection

a) All finished welds (i.e. 100 percent) shall be visually inspected for identification

of the following types of weld defects & faults.

b) Weld defects occurring at the surface such as blow holes, exposed porosity,

unfused welds etc.

c) Surface cracks in the weld metal or in the parent metal adjacent to it.

d) Damages to the parent metal such as undercuts, burning, overheating etc.

e) Profile defects such as excessive convexity or concavity, overlapping, unequal

leg lengths, excessive reinforcement, incompletely filled grooves, excessive

penetration beads, root grooves etc.


27 | P a g e

f) Distortion due to welding i.e., local shrinkage, camber, bowing, twisting,

rotation, wariness etc.

g) Linear eccentric, angular and rotational misalignment of parts.

h) Dimensional errors.

B) Magnetic Particle/Dye Penetration/Ultrasonic Examination

The examination shall be done at random as directed by the Engineer-in

Charge. Whenever such tests are directed, the tests shall be carried out on

joints chosen by him. The tests shall be carried out by employing approved

testing procedure in accordance with IS: 822.

C) Repair of Faulty Welds

No repair of defective welds shall be carried out without proper permission of

the Engineer-in-Charge and his approval for the corrective procedure.

Welds not complying with the acceptance requirements (as specified by BIS

Codes & the MMCI/HPCL Engineer-in-Charge), as revealed during inspection &

testing of welds or erection or in-situ condition shall be corrected either by

removing & replacing or as follows

a) Excessive convexity Reduced to size by removal of excess

weld metal.

b) Shrinkage cracks, cracks

sound plates and craters

Defective portions removed down to

sound metal and rewelded.

c) Under cutting. Additional weld metal deposited

d) Improperly fitted/

misaligned parts

Welding cut & edges suitably

prepared and parts

e) Members distorted by heat

of welding

Member straightened by mechanical

means or careful application of

limited amount of heat

Temperature of such area shall be

less than 650 degree Centigrade (dull

red heat).

In removing defective parts of a weld, gouging, chipping, oxygen cutting

or grinding shall not extend into the parent metal to any substantial amount

beyond the depth of weld penetration, unless cracks or other defects exist in the

parent metal. The weld or parent metal shall not be undercut in chipping,

grinding, gouging or oxygen cutting.

Any fabricated structure or its component which in the opinion of

Engineer-in Charge is defective and/or beyond any corrective action shall be

removed forthwith from the site as instructed by the Engineer-in-Charge without


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any extra claim. The owner reserves the right to recover any compensation due to

any loss arising out of such rejections.

6.5 Bolting

6.5.1 All bolts shall be provided such that no part of the threaded portion of the bolts is

within the thickness of the parts bolted together. Washers of suitable thickness shall be

used under the nuts to avoid any threaded portion of the bolt being within the

thickness of parts bolted together.

6.5.2 The threaded portion of each bolt shall project through the nut at least one thread.

6.5.3 Flat washers shall be circular and of suitable thickness. However, where bolt heads/nuts

bear upon the bevelled surfaces, they shall be provided with square tapered washers of

suitable thickness to afford a seating square with the axis of the bolt.

6.6 Splicing

6.6.1 Splicing of built up/compound/latticed sections shall be done in such a fashion that

each component of the section is joined in a staggered manner

6.6.2 Where no butt weld is used for splicing, the meeting ends of two pieces of

joist/channel/built up section shall be ground flush for bearing on each other and

suitable flange and web splice plates shall be designed and provided for the full

strength of the flange/ web of the section and welds designed accordingly

6.6.3 Where full strength butt weld is used for splicing (after proper edge preparation of the

web and flange plates) of members fabricated out of joist/ channel/ angles/ built up

section, additional flange and web plates shall be provided, over and above the full

strength butt welds, to have 40% strength of the flange and web.

6.6.4 Where a cover plate is used over a joist/channel section the splicing of the cover plate

and channel/joist sections shall be staggered by minimum 500mm. Extra splice plate

shall be used for the cover plate and joist/channel section as per clause 8.2.8.2 or

8.2.8.3.

6.6.5 Prior approval shall be obtained by the Contractor for locations of splices where not

shown on design drawings. Only a single splice at approved location shall be allowed

for members up to a length of 6 to 7m. Maximum two numbers of splices shall be

allowed for members exceeding this length.

6.7 Machining & Grinding

6.7.1 All slab bases and slab caps shall be accurately machined over the bearing surfaces and

shall be in effective contact with the ends of column sections .

6.7.2 For slab bases and slab caps, ends of column shafts shall be accurately machined.

However, for gusseted bases and caps, the column shafts shall be ground flush for

effective contact with parts connected together.


29 | P a g e

6.7.3 Gusseted bases and caps shall be ground flush for effective contact with ends of column

sections.

6.7.4 End of all bearing stiffeners shall be machined or ground to fit tightly at top and bottom

without any air gap.

6.7.5 While machining or grinding care shall be taken so that the length or thickness of any

part does not get reduced by more than 2.0 mm.

6.7.6 For all machining or grinding works for gusseted base and cap plates, the clearance

between the parts joined shall not exceed 0.2 mm at any location.

6.8 Erection

6.8.1 Scope

6.8.1.1 This specification covers the general requirements for erection of structural steel and

stainless steel. It covers the supply and delivery of all necessary materials, labour,

scaffolding, tools, tackles, equipment and everything that is necessary for the

satisfactory completion of the job on schedule.

6.8.2 Applicable Codes & Specifications

6.8.2.1 The following specifications, standards and codes are made a part of this specification.

All standards, specifications and codes of practice referred to herein shall be the

latest editions, including all applicable official amendments and revisions.

6.8.2.2 In case of discrepancy between this specification and other documents referred to

herein, this specification shall govern.

6.8.2.3 Structural

a) IS:800 Code of Practice for General Construction in Steel

b) IS:801 Code of Practice for Use of Cold Formed Light Gauge Steel

Structural Members in General Building Construction

c) IS:7205 Safety Code for Erection of Structural Steel Work

d) IS:7215 Tolerances for Fabrication of Steel Structures

e) IS:4000 Code of practice for assembly of structural joints using high

tensile friction grip fasteners.

f) IS:822 Code of procedure for inspection of welds

6.8.3 Site Operations

6.8.3.1 An experienced and qualified Supervisor shall be in full time charge of the job.

6.8.3.2 Contractor shall furnish at his own expense, the necessary non-inflammable staging


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and hoisting materials or equipment required for the erection work and shall

remove and take them away after completion of the job. CONTRACTOR shall also

provide necessary passageways, fences, safety belts, helmets, lights and other fittings

to the satisfaction of OWNER/ENGINEER and to meet the rules of local authorities

and for protection to his men and materials. A licensed electrician shall be kept on

the job for the entire duration of the work to maintain CONTRACTOR's electrical

equipment and connections.

6.8.3.3 CONTRACTOR shall protect all existing plant, structures, piping, conduits,

equipment and facilities against damage during erection. Any damage caused by

CONTRACTOR shall be rectified entirely at CONTRACTOR's cost, to the

satisfaction of OWNER/ENGINEER. If work has to be carried out adjacent to

existing switch yards or electrical installations which are live, CONTRACTOR must

ensure suitable safety precautions in consultation with ENGINEER

6.8.3.4 If a portion of the work of the project area cannot be made available to

CONTRACTOR for his activities due to operations being carried out by other

agencies, he shall suitably modify his sequence of operations to continue work

without interruption. CONTRACTOR shall work in coordination with other

agencies working on the project site and plan his work suitably so as not to hinder

the progress of construction at site.

6.8.4 Anchor Bolts & Foundations

6.8.4.1 CONTRACTOR shall carefully check the location and layout of anchor bolts

embedded in foundations constructed, to ensure that the structures can be properly

erected as shown on the drawings, any discrepancy in the anchor bolts/foundation

shall be reported to ENGINEER.

6.8.4.2 Levelling of column bases to the required elevation may be done either by providing

shims or three nuts on the upper threaded portion of the anchor bolt. All shim stock

required for keeping the specified thickness of grout and about erection of structures

on foundations, crane brackets or at any other locations shall be of good M.S. plates

at no extra cost to the OWNER.

6.8.4.3 A certain amount of cleaning of foundations and preparing the area is considered

normal and shall be carried out by CONTRACTOR.

6.8.4.4 Where beams bear in pockets or on walls, bearing plates shall be set and levelled as

part of the work. All grouting under column base plates or beam bearing plates will

be carried out by CONTRACTOR, as a part of his scope of work.

6.9 Load Test

6.9.1 Party shall carryout load test of the structure as per the requirement of department

engineer. Test loads/Dummy loads required shall be arranged by the department at

site.


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6.10 Painting and corrosion protection

a. All piping, internal piping, fittings shall be painted with approved paints

b. Painting operation shall generally be in line with IS 1477.

Painting of MS Structural work includes surface preparation, Mixing and

application of paints. Primer & Final coat as per required thickness. All paints and

necessary consumables fall under the scope of the contractor.

Painting Scheme shall be followed given below:

- High build epoxy primer: 110 – 130 microns

- Aliphatic/acrylic Polyurethane: 40 microns

- Total Dry film thickness: 160 ± 10 microns

c. Color scheme: It will be provided by purchaser and in general as per relevant Indian

standards and which will be applicable for final coat.

d. Supply of paints shall be in the scope of contractor. Paints procured shall be one

among the reputed makes like Berger / Asian Paints / Nerolac.

e. The following inspections will be carried out by Department engineer.

Pre-surface preparation inspection

Determination of surface preparation

Inspection of coating equipment & coating application

Evaluating cleaning between coats.

f. Spray painting shall be carried out. Necessary tools like spray gun, pneumatic hose,

consumables etc shall be provided by Contractor. Air will be provided by at free of

cost for carrying out spray painting. 7. General Terms

7.1 The scope shall include fabrication, welding, buffing, painting and inspection as per site

condition along with supply of raw materials.

7.2 Party shall carryout entire work at various facilities in Solid Propellant and Space Booster

Plant(SPROB).

7.3 The party has to submit the offer for structural fabrication, SS handrail supply, welding.

Combined lowest offer will be considered for recommendation as these works are

interdependent and cannot be split.

7.4 Only TIG qualified welder will be permitted for carrying out the welding of SS. Fitters,

fabricators and grinders should be well experienced in carrying out fabrication

activities.

7.5 Party shall be depute his team for carrying out works on need basis. Party shall also

arrange material in smaller lots as and when required for site works

7.6 Party has to remove all temporary works constructed whatsoever nature required for the

proper execution of the erection works at purchaser’s site.


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7.7 The contractor has to make his own arrangement for transportation of man power and

machinery to the work spot.

7.8 The party shall use only ESAB/ Adavani make electrodes for carrying out the structural

fabrication works.

7.9 The party has to depute one experienced supervisor for co-ordination of site activities,

discussion and finalization of site erections with department engineers and for ensuring

safety precautions. He shall be present at site during the entire period of work.

7.10 Party is responsible for safe storage of raw materials and shall make necessary

arrangements if required at site.

7.11 Water and Power supply shall be provided by the department at free of cost at one

nearest point. Further distribution is in the scope of bidder.

7.12 Party shall use DP material of ITW MAGNAFLUX make as listed below

S. No Item Specification

1. Developer ITW MAGNAFLUX” SPOTCHECK Non-Aqueous

Developer (SKD-S2) (420 ML. SPRAY CAN)

2. Cleaner ITW MAGNAFLUX” SPOTCHECK Solvent

Cleaner (SKC-1) (420 ML. SPRAY CAN)

3. Penetrant ITW MAGNAFLUX” SPOTCHECK Visible

Penetrant (SKL-SP1) (420 ML. SPRAY CAN)

7.13 The work contract is for a period of 12 months from the date of purchase order. Party

shall able to depute the team as and when the site is ready to take up the work with a

notice period of 7 days. Rates quoted shall remain firm for the entire duration of work.

7.14 Party shall deploy adequate number of workforce required to carry-out the work as

discussed and approved after placement of purchase order.

7.15 Party shall confirm to all the tender terms and conditions and quote for all entire scope

of supply, fabrication and site erection. If party is not quoting for either of the item in

the tender, department has the right to reject the offer.

7.16 Quantity: ±10% of the Purchase Order quantity. Rates quoted shall remain firm for

±10% of the Purchase Order quantity.

7.17 The payment will be made on weight basis for the items based on the actual weight of

the finished product fabricated / erected at site on pro-rata basis.

7.18 All structural steel shall be erected as shown on the drawings. Proper size steel cable

slings, etc., shall be used for hoisting. Guys shall not be anchored to existing structures,


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foundations, etc. unless so permitted by ENGINEER in writing. Care shall be taken to

see that ropes in use are always in good condition.

7.19 Steel columns in the basement, if any, are to be lowered and erected carefully with the

help of a crane and/or derrick without damaging the basement walls or floor.

7.20 Structural steel frames shall be erected plumb and true. Frames shall be lifted at such

points that they are not liable to buckle and deform. Trusses shall be lifted only at node

points. In the case of trusses, roof girders, all of the purlins and wind bracing shall be

placed simultaneously and the columns shall be erected truly plumb on screed bars

over the pedestals. All steel columns and beams shall be checked for plumb and level

individually before and after connections are made. Temporary bracings shall be

introduced wherever necessary to take care of all loads to which the structure may be

subjected, including erection equipment and the operation thereof. Such bracings shall

be left in place as long as may be required for safety and stability.

7.21 Chequered plates shall be fixed to supporting members by tack welding or by

countersunk bolts as shown/specified in relevant drawings and/or as directed by

ENGINEER. The edges shall be made smooth and no burrs or jagged ends shall be left.

While splicing, care should be taken so that there is continuity in pattern between the

two portions. Care should also be taken to avoid distortion of the plate while welding.

The erection of chequered plates shall include :

a) Welding of stiffening angles/vertical stiffening ribs

b) Cutting to size and making holes to required shape wherever necessary to allow

service piping and/or cables to pass through

c) Splicing as shown in relevant drawings

d) Smoothening of edges

e) Fixing of chequered plates by tack welding or by countersunk bolts

f) Providing lifting hooks for ease of lifting.

7.22 As erection progresses, the work shall be securely bolted to take care of all dead load,

wind, seismic and erection stresses.

7.23 No riveting or welding or final bolting shall be done until the structure has been

properly aligned and approved by ENGINEER. No cutting, heating or enlarging of the

holes shall be carried out without the prior written approval of ENGINEER.

List of Annexures

S. No Annexure Reference

1 Bid Qualification Criteria Annexure-1

2 Compliance Statement Annexure-2

3 QAP Annexure-3


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4 Deviations Annexure-4

5 Price Bid Format Annexure-5