Volume-II of IV - GAIL

MECON LIMITED
Delhi
PROCESS & PIPING
DESIGN SECTION
TECHNICAL SPECIFICATION FOR
TEMPORARY CATHODIC
PROTECTION SYSTEM
TECHNICAL SPECIFICATION NO. : MEC/TS/05/62/016A REV-1 Page 13 of 19
brick cover back filled with normal soil. Outside the station/plant area the routes shall
be marked with Polyethylene cable warning mats placed at a depth of 0.9m from the
finished grade.
7.1.3 All underground unarmoured cables forming part of permanent CP system shall run
through PE sleeves. Cables along the pipeline shall be carried along the top of the pipe
by securely strapping it with adhesive tape or equivalent as required.
7.1.4 RCC or GI pipes of proper size shall be provided for all underground cables for road
crossings.
7.1.5 Cables shall be neatly arranged in trenches in such a manner that criss-crossing is
avoided and final take off to equipment is facilitated.
7.2 Cable to Pipe Connections
All the cable connections to the pipeline including charged foreign pipeline shall be
made using an approved exothermic process. A suitable water proof sealing system of
the cable connections shall be made which will be compatible with parent coating
system of the pipeline after exnothernice process.
For charged pipeline pin-brazing shall be used. Eutectic solder shall not be acceptable
for charged or non-charged pipeline.
8.0 CIVIL WORKS
All civil works associated with the complete cathodic protection work shall be included
in the scope of contractor. This shall include providing cable trenches, foundation for
equipment and all test stations, etc.
9.0 TESTING AND INSPECTION AT WORKS
9.1 OWNER/OWNER's representative shall visit the works during manufacture of various
equipment to assess the progress of work as well as to ascertain that only quality raw
material is used for the same. All necessary assistance during such inspections shall be
provided.
9.2 The minimum testing, inspection requirements for all components/ equipments shall
confirm to the requirements as defined in the relevant codes and standards. Detailed
inspection and testing procedures along with the acceptance criteria shall be prepared
by CONTRACTOR for OWNER's approval.
9.3 Test certificates including test records, performance curves etc., shall be furnished. All
test certificates shall be endorsed with sufficient information to identify equipment to
which the certificate refers to and must carry project title, owner's name and purchase
order details etc.
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