Preamble Piping Fabrication

Section 5 - Subcontract Schedule of Prices and Rates

Attachment to Section 5, Clause 5

P-P5-000 : Preamble for Piping Works – Shop Fabrication (Applicable on all Items of Piping Works – Shop Fabrication Bill) Scope This document defines the work requirements of the Subcontract (Service Agreement). The Subcontractor (Fabricator) shall carry out work in accordance with the requirements mentioned below and Contract Specification. The necessity and extent of work shall be established during detail design based on applicable process and environmental considerations. Codes & Standards The piping work shall generally be in accordance with the specifications supplied by Company/ Contractor, local rules & regulations, International Standards and the project documents listed below to the extent of the clauses apply in the Work. Reference Documents Project Schedule, Piping Plans, Isometrics, P & IDs, Piping Specification, Support Specification, Line List, Support Drawing, Painting Specifications and also documents identified in Section 4 clause 7 of Subcontract. Materials a)

All permanent materials for welding/ jointing (fabrication) of pipe such as pipes, pipe fittings, flanges, fasteners shall be supplied by Contractor as Free Issue as per Responsibility Matrix. However, for other activities material to be provided by subcontractor as detailed in specific preamble/ responsibility matrix.

b)

Subcontractor shall include the price of all consumables and other materials. Price shall also include health and safety gears, equipment, all plant, scaffolding, tools and tackles required for the execution of Service Agreement Works.

c)

Subcontractor shall be responsible for arranging, off-loading at shop, warehousing and storing and preservation of materials and shall arrange for all necessary permits in compliance with government rules and regulations to carry out the job.

General ‘Piping Bill of Quantities’ is based on preliminary estimate of the Project and defines the following. a) b) c) d)

Quantity of Welding/ Jointing Quantity of welds to be radiographed. Quantity of Pre/Post weld heat treatment. Quantity for Painting Work

The rates shall include but not limited to seam cutting, grinding, fitting and welding of joints. The number of weld joints indicated under additional details column in Piping Bill of Quantities is based on estimated pipe lengths and number of in line fittings size and thickness. Subcontractor to allow for irregularities of piping dimensions viz. diameter, wall thickness to match piping within acceptable tolerances limits.

PI-15027-19-R-05 : Package-O1; Piping Fabrication

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Section 5 - Subcontract Schedule of Prices and Rates

Attachment to Section 5, Clause 5

Unless otherwise indicated, radiography shall be used for examination of butt-welds and magnetic particle inspection/ liquid dye penetration test for fillet welds. Subcontractor shall deploy competent and experienced fabrication supervisors to perform the Work. P-P5-001: Welding/ Jointing of Pipes Rate for fabrication shall include all costs including receipt and handling of materials, cutting pipe to required lengths, pipe end preparation, perforation of header pipe (for branch fitting), alignment, clamping, tacking, preheating and welding. The rate shall also include magnetic particle inspection/ liquid dye penetration test, PMI required as per project specification. Therefore, these shall not be measured separately and paid as rate includes the same. The rate to also include cost of Welding Procedure Specification (WPS), Procedure Qualification Record (PQR) and Welders Qualification Test (WQT) for different class of materials as per project specification.. Payment shall be made for all Radiographed joints which are accepted. No payment shall be made for any retakes/ Re-shoots of joints if the quality of radiographs is not as per specifications or cannot be interpreted. Similarly, no payment shall be made if any weld defects are found and the joints are repaired and radiography is repeated on such joints. If any penalty is imposed for weld repairs due to fault of Subcontractor, as per provision of codes/ project specifications, such additional radiography shall not be paid. Instruction for re-shoot of weld joints radiography due to poor technique adopted by Subcontractor shall not qualify for additional reimbursement. Galvanizing of pipe spools, if required, shall be measured separately and paid based on separate unit rate for Galvanizing per Metric Ton provided by Subcontractor in the price format. Method of Measurement Welding/ Jointing of pipe shall be measured in Inch Dia. Weld/ Joints found defective will not be measured and paid. P-P5-011 : Radiography Payment for radiography shall be made only for accepted radiographed joints. No payment shall be made for any re-takes/ Re-shoots of joints if the quality of radiographs is not as per specifications or cannot be interpreted. Similarly, no payment shall be made if any joint found defective; the joints are repaired and radiography is repeated on such joints. If any penalty is imposed for weld repairs due to fault of Subcontractor, as per provision of codes/ project specifications, such additional radiography shall not be paid. Radiography to check the soundness of welding joint before carrying out PWHT shall not be paid by Contractor. Radiography of welded joints shall include for the provision of all qualified personnel, suitable isotopes, and storage of isotopes as per local/international regulations, necessary equipment

PI-15027-19-R-05 : Package-O1; Piping Fabrication

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Section 5 - Subcontract Schedule of Prices and Rates

Attachment to Section 5, Clause 5

and facilities, including fully equipped darkroom, supply and development of films, reporting and maintenance of records. Method of Measurement Radiography of weld joints shall be enumerated as no. of joints P-P5-012 : Post Weld Heat Treatment (PWHT) Post Weld Heat Treatment shall be performed for the successful radiographed weld joints as per BOQ. PWHT treatment shall include cost for all qualified personnel, necessary equipment and facilities for carrying out PWHT are per the project specification & drawing. Method of Measurement PWHT of weld joints shall be enumerated as no. of joints. P-P5-014 : Supply & Application of Painting Prices and Rates shall include for the cost of all permanent and temporary materials, scaffoldings and consumables. Rates for painting shall include for all surface preparation, supply of consumables, supply & application of primer, paint including color-coding, banding, stencilling and flow marking in accordance with the project specification. Rates shall also include cost of painters qualification as per requirement of specification. Painting of pipe support directly welded to the pipe is not measured separately, but deemed included in unit rate for pipe support. Surfaces shall be painted using the paint systems specified in the project specifications using:  

Painting Schedules for External Surfaces Paint Materials

Subcontractor may use their supplier’s standard paint specification provided it meets the requirements of this specification and as approved by Contractor/ Company. Paint system colour requirements shall be as indicated in the drawings, specifications and Colour Schedule, unless otherwise approved by Contractor/ Company. Shop weld joints and field weld ends will be left unpainted (joints protected with suitable masking tape) which shall be painted at site by Subcontractor after hydro-testing. Touch up painting of prefabricated spools to rectify transit damages shall also be in Subcontractor scope. Method of Measurement Piping painting shall be measured in Square Meter (M2) based on the outside diameter of pipe multiplied by the length measured along centreline of pipe through all inline fittings, flanges, special fittings and the like. Additional surface area of flanges, fittings, special fittings and the like shall not be measured separately and is deemed to be included in the unit rate. The method shall be applicable for Insulated, non-insulated and buried piping.

PI-15027-19-R-05 : Package-O1; Piping Fabrication

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Section 5 - Subcontract Schedule of Prices and Rates

PI-15027-19-R-05 : Package-O1; Piping Fabrication

Attachment to Section 5, Clause 5

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