Volume-II of IV - GAIL

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MECON LIMITED REGD. OFF: RANCHI (BIHAR) PROCESS & PIPING DESIGN SECTION NEW DELHI TITLE PIPING FABRICATION AND ERECTION 1.13.3 Welder's Qualification STANDARD SPECIFICATION SPECIFICATION NO. PAGE 20 OF 62 MEC/S/05/62/06 REVISION 0 a) Welders shall be qualified in accordance with the API 1104/ ASME IX and other applicable codes by the contractor at his expense. The butt weld test pieces of the qualification test shall meet the radiographic tests requirements as mentioned in this specification. The COMPANY's inspector shall witness the test and certify the qualification of each welder separately. Only those welders who have been approved by the COMPANY's inspector shall be employed for welding. Contractor shall submit the welder qualification test reports in the standard format and obtain express approval, before commencement of the work. It shall be the responsibility of contractor to carry out Qualification tests of welders. b) The welders shall always have in their possession the identification card as shown in Exhibit-E and shall produce it on demand by the COMPANY's Inspector. It shall be the responsibility, of the Contractor to issue the identify cards after it has been duly certified by the COMPANY. If a welder is found to perform a type of welding for which he is not qualified, he shall be debarred from doing any further work. All welds performed by an unqualified welder shall be cut and redone by a qualified welder at the expense of the Contractor. 1.13.4 Visual Inspection Inspection of all welds shall be carried out by COMPANY as per the latest editions of the applicable codes and specifications. All finished welds shall be visually inspected for parallel and axial alignment of the work, excessive reinforcement, concavity of welds, shrinkage, cracks, under cuts, dimensions of the weld, surface porosity and other surface defects. Under-cutting adjacent to the completed weld shall not exceed the limits specified in the applicable standard/ code. 1.13.5 Non-destructive Examination The non destructive examination shall mainly consist of examination using x-ray radiography as detailed in Annexure-4.
MECON LIMITED REGD. OFF: RANCHI (BIHAR) PROCESS & PIPING DESIGN SECTION NEW DELHI TITLE PIPING FABRICATION AND ERECTION STANDARD SPECIFICATION SPECIFICATION NO. PAGE 21 OF 62 MEC/S/05/62/06 REVISION 0 Radiographic examination of one hundred percent (100%) girth welds will be required by the COMPANY. Welds shall meet the standards of acceptability as set forth in API 1104 and as per the requirements laid in subsequent paragraphs. The CONTRACTOR shall make all the arrangements for the radiographic examination of work covered by this specification at his expense. The COMPANY will review all the radiographs of welds and inform the CONTRACTOR regarding unacceptable welds. The decision of the COMPANY shall be final and binding in this regard. All requirements mentioned in the specification shall be arranged and executed by the CONTRACTOR through his own resources. In addition, for pipes with wall thickness 9.5mm and above, ultrasonic inspection is required in the following cases as per Annexure-3 of this specification. a) On the first 100 welded joints corresponding to each automatic (GTAW/ GMAW) welding procedure used. b) When 20mm or more are cut from the pipe end as supplied, the ends shall be ultrasonically inspected for an additional length of 20mm to ensure no lamination exist. c) When welds are repaired. d) When in the opinion of COMPANY, ultrasonic inspection is required to confirm or clarify defects indicated by radiography. e) When automatic procedure is used at least 10cm on each weld shall be ultrasonically inspected at COMPANY's discretion. In addition, ultrasonic inspection may be required for certain critical weldings of the pipeline (i.e. tie-ins, welding of valves, flanges) randomly selected at COMPANY's discretion. All fillet and groove welds other than that radiographed shall be subjected to dye pentrant/ MP inspection. The non destructive test system used for inspecting welds must be approved by the COMPANY. Weld quality is judged on the basis of the acceptability criteria mentioned below :
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GAIL (India) Limited TENDER DOCUMEN
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MECON LIMITED REGD. OFF: RANCHI (BI
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Pipe Size, Out Side Diamter- Inches
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SPECIFICATION FOR HYDROSTATIC TESTI
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SPECIFICATION FOR MAJOR WATER CROSS
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CONTENTS Sl. Description Page No. N
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1.0 GENERAL 1.1 These technical spe
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completion and testing on system ar
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5.1.2 Mill scale, rust, rust scale
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5.2.3 Maual or hand tool cleaning M
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c. Ingredients shall be kept proper
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the bottom. This work shall be done
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S. NO. DESCRIPTION 1. MANUAL OR HAN
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S. NO. DESCRIPTION 3. BLAST CLEANIN
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6.0 PAINT MATERIALS Paint manufactu
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PAINT MATERIALS TABLE NO.: 6.2FINIS
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Notes: 1. Covering capacity and DFT
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TABLE 7.1: PRE-ERECTION/ PRE-FABRIC
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NOTE 2 : FOR EXTENAL SURFACE OF RCC
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TABLE 10.0: FIELD PAINT SYSTEM FOR
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TABLE 12.0 : FIELD PAINT SYSTEM FOR
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TABLE 14.0 : PAINTING UNDER INSULAT
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17.0 STORAGE 17.1 All paints and pa
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. Intersection points & change of d
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20.3 Method of Camouflaging 20.3.1
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it would be in the interest of the
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24.5 Tests required for evaluation
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S. No. MANUFACTURER NAME LIST OF RE
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S. No. MANUFACTURER NAME LIST OF RE
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S. NO. LIST OF RECOMMENDED MANUFACT
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SPECIFICATION FOR REPAIR OF PIPELIN
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MECON LIMITED DELHI PROCESS & PIPIN
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SPECIFICATION FOR DOCUMENTATION FOR
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1.0 SCOPE 1.1 This specification co
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2.3 Monthly • Priced variations
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- Major water crossings - Waste dis
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- Location of further appurtenance
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Document2 SPECIFICATION FOR PIPELIN
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SPECIFICATION FOR VENTS, DRAINS AND
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1.0 SCOPE TABLE OF CONTENTS 2.0 COD
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The last letter indicates type of m
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10.0 GASKETS 10.1 Spiral wound meta
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13.7 Unless specified otherwise. Va
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determination of surface profile -
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) Peel Strength shall be as follows
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accordance with ISO:8503-3 or ISO:8
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4.3 Application Procedure for Corro
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Company Representative reserves the
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SPECIFICATION FOR 3-LAYER POLYETHYL
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1.0 SCOPE This specification covers
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y. CSA Z245.20-98 : External Fusion
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which failed. If all tests pass, th
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5.3.3 Properties of Coating System
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health and safety sheets and manufa
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7.4.4 Chemical Pre-Treatment 7.4.4.
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specified temperature i.e. one at e
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• Any time when in COMPANY’s op
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8.6.4 After the de-ionised water wa
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8.13.4 The CONTRACTOR shall check t
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i. Electrostatic application of epo
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9.2.12 Failure to comply with any o
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area on the pipe shall show presenc
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10.10 Epoxy Layer Adhesive Test a.
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11.3 The CONTRACTOR shall load, unl
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• Damages caused to coating by ha
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14.6 The CONTRACTOR’s Quality sys
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Table - 1 Manufacturers Data on Coa
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MECON LIMITED Delhi PROCESS & PIPIN
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PROCESS & PIPING DESIGN SECTION MEC
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SPECIFICATION FOR PIPELINE PRE-COMM
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C O N T E N T S Clause No. Title Pa
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Above 250 & upto 500 - Deploy one q
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e. Fabricated steel structurals, pi
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4.0 DETAILS OF HSE MANAGEMENT SYSTE
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RELEVANT IS-CODES FOR PERSONNEL PRO
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2.0 MONTHLY CHECKLIST CUM COMPLIANC
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MONTHLY CHECKLIST CUM COMPLIANCE RE
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MONTHLY CHECKLIST CUM COMPLIANCE RE
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ANNEXURE-B Format-3 3.0 ACCIDENT RE
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5.0 MONTHLY Health, Safety & Enviro
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OBSERVATION OF QUALITY ASPECTS Job
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SPECIFICATION FOR CALIPER PIGGING S
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1.0 INTENT 2.0 OBJECTIVE SPECIFICAT
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6.0 GAUGE PIG RUN Contractor to car
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- Valves or any partially closed va
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geometry inspection to generate val
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PIPELINE DETAILS NOMINAL DIAMETER m
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CONTENTS Sl.No. Description Page No
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) SIS - 055900 : Pictorial surface
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Property Test Method Condition Requ
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35mm The sleeve shall be installed
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4.1 General a) The application proc
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4.3 Procedure a) The application pr
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5.2.3 All the coated joints shall b
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8.0 REPAIR OF PIPE COATING DEFECTS
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C O N T E N T S Sl.No. Description
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e measured. Hence the depth of meas
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6.7 Graphical representation of exi
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GAIL (India) Limited TECHNICAL SPEC
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1.0 SCOPE Cathodic Protection Power
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limit feature shall be provided in
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e) Pipeline under protected f) Auto
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- Dimensional checking - Proper mou
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Volume-II of IV - GAIL

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