Volume-II of IV - GAIL

MECON LIMITED
REGD. OFF : RANCHI (BIHAR)
Document6
PROCESS & PIPING
DESIGN SECTION
NEW DELHI
TITLE MAINLINE CONSTRUCTION
(ONSHORE)
12.1.7 Painting
STANDARD SPECIFICATION
SPECIFICATION NO. PAGE 43 OF 53
MEC/S/05/62/01 REVISION A
All exposed surfaces like piping, valves, structures, and miscellaneous
appurtenances shall be painted in accordance with the specifications issued for
this purpose. The corrosion coating on pipe surface will end approximately 0.3
meter above the finish grade and it will be necessary for CONTRACTOR to
provide a clean interface at the junction of the protective coating and the paint.
12.1.8 Coating of buried-Installations, etc.
12.1.9 Clean-up
All buried valves, insulating joints, flowtees, bends, other in-line fittings and
appurtenances shall be coated with minimum three coats of approved quality of
coal-tar epoxy or any other equivalent suitable COMPANY approved coating at
no extra cost to the COMPANY. For buried pipes either heat shrink tapes
conforming to COMPANY's specification or coal tar epoxy shall be used.
CONTRACTOR shall submit to COMPANY a report used alongwith all the test
certificates. Only after obtaining written approval from the COMPANY,
CONTRACTOR shall commence the work of coating.
After all required tests have been concluded satisfactorily CONTRACTOR shall
clean up the site as laid down in the specifications issued for the purpose. The
Site finish shall be graded in accordance with the approved drawings.
12.2 Installation of Valves and Valve Stations
12.2.1 Block and sectionalising valve stations shall be installed as shown on the
approved drawings. It is CONTRACTOR's responsibility to have the units
completely assembled, tested and made fully functional including all related
instruments etc.
12.2.2 The civil and structural work shall be carried our in accordance with the relevant
specifications issued for the purpose and in accordance with the approved
drawings as directed by COMPANY. This work as a minimum shall include
clearing, grading, fencing, foundations, etc, as required. All above ground
structures shall be painted as per the specification and color code given by the
COMPANY.