Volume-II of IV - GAIL

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MECON LIMITED Delhi PROCESS & PIPING DESIGN SECTION TECHNICAL SPECIFICATION FOR PERMANENT CATHODIC PROTECTION SYSTEM TECHNICAL SPECIFICATION NO. : MEC/TS/05/62/016B REV-1 Page 8 of 24 7.2.2 Cathodic Protection Power supply Module (CPPSM) for supply of power to Cathodic Protection System shall work on DC input power supply & control the output DC supply using power switch mode principle. The CPPSM shall be field proven. The design, internal components, quality, rating & layout of components shall ensure high MTBF & low MTTR. The CPPSM shall conform to MECON Standard Specification No. MEC/TS/05/62/072A and CPPSM Data Sheet. 7.2 Anode Ground Beds and Anodes i) Each CP station shall have an independent anode ground bed which may be of shallow or deep well construction depending upon the corrosion data collected by the contractor. Deep well ground beds may also be used in the congested locations where availability of suitable land for spread out ground beds is restricted. ii) Ground bed shall be located electrically remote from the pipeline. Nearest part of the anode bed shall atleast be 100 metres away from the pipeline. The anodes installed in the ground shall be located in perennially moist strata, wherever possible. Horizontal ground beds shall be at right angles to the pipeline, as far as possible. iii) Anodes shall be of MMO coated titanium anode or HiSiCrFe anode. alongwith tail cable. MMO Titanium Anode - As per manufacturer’s recommendation MMO Anode Dimension - Weight of Anode - Recommended by manufacturer w.r.t. dimension Max. Recommended - 100 A/m 2 Current density Service Life - 35 years Anode Cable - Single MMO Anode – XLPE/PVC Streng MMO Anode – EPR/CSPE Cable Length - As required High Silicon Chromium Cast Iron Anode Anode shall conform to ASTM A518M-86, Gr-III & composition shall be as below :- Silicon : 14.2 – 14.75% Manganese : 1.5% max. Carbon : 0.7 – 1.1% Chromium : 3.25 – 5.0% Copper : 0.5% max. Molybdenum : 0.2% max. Iron : Reminder D:\old data\FATEH\MP Region\Kailaras\Tender RFQ\TCP&PCP\Permanent Cathodic Proection - 016B-R1.doc
MECON LIMITED Delhi PROCESS & PIPING DESIGN SECTION TECHNICAL SPECIFICATION FOR PERMANENT CATHODIC PROTECTION SYSTEM TECHNICAL SPECIFICATION NO. : MEC/TS/05/62/016B REV-1 Page 9 of 24 The anode shall be hollow type centrally connected or solid type end connected, cable to anode joint shall be reliable and adequate for derigh life of anode. iv) Sheet steel anode canisters of adequate size shall be provided for each anode of selected Anode canisters shall be filled with petroleum coke breeze with a typical carbon content of 91.77%. String anode shall be used for days well ground bed. In case of deep well ground beds calcined fluid petroleum coke breeze with a typical carbon content of 91.77% shall be provided in the well surrounding the anodes. v) Each shallow anode bed shall contain anodes with canisters positioned horizontal or vertical in the soil with suitable backfill at appropriate depth with respect to configuration horizontal or vertical. vi) Layout of anode installation in anode bed shall be detailed out in drawings showing anode installation details, anode grouping, anode wiring, anode cable routing etc. The deepwell anode ground bed details shall include the details of anodes, deepwell casing, anode positioning, anode cable supporting, deepwell gas venting, active, passive portions of ground bed etc. vii) Anodes shall be supplied complete with tail cables which shall be long enough for termination on their associated junction boxes without intermediate joints. Exact lengths and termination details shall be indicated in construction drawings by Contractor. viii) Anode bed separation from pipeline shall be tested for interaction. ix) Potential gradient around the anode bed shall be within safety requirements and its effective boundary shall be defined and secured. x) In case two parallel pipelines running in the same ROW. The anode ground beds of respective pipelines shall be located on the respective sides of the pipelines. xi) The depth of deepwell anode ground bed shall be sufficient enough to reduce anode influence on incidental structures within proposed location. 7.3 Anode Junction Box i) Depending on the size and configuration of anode ground beds, one or more anode junction boxes shall be provided at each ground bed. All cable tails from individual anodes shall be terminated onto these anode junction boxes which shall be further connected to anode cable coming from CP station power source. ii) Junction boxes shall have sheet steel enclosure of minimum 3 mm thickness and hinged lockable shutters. They shall be weatherproof with degree of protection IP-55. Junction boxes shall have anode bus and terminal plate with adequate number of antiloosening type of identified terminals. Provision shall be made for measurement and control of individual anode current by providing D:\old data\FATEH\MP Region\Kailaras\Tender RFQ\TCP&PCP\Permanent Cathodic Proection - 016B-R1.doc
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GAIL (India) Limited TENDER DOCUMEN
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MECON LIMITED REGD. OFF: RANCHI (BI
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MECON LIMITED REGD. OFF : RANCHI (B
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Pipe Size, Out Side Diamter- Inches
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\\Akjha\work contrac\standard TS fo
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SPECIFICATION FOR HYDROSTATIC TESTI
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0 C C; \ts\Tender-A,4.doc. TABLE -
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0 C C; \ts\Tender-A,4.doc. TABLE -
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SPECIFICATION FOR MAJOR WATER CROSS
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SPECIFICATION FOR PIPING FABRICATIO
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Pipe Size, Outside diameter Inches
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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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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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MECON LIMITED REGD. OFF RANCHI PROC
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Volume-II of IV - GAIL

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