Volume-II of IV - GAIL

MECON LIMITED
REGD. OFF : RANCHI (BIHAR)
PROCESS & PIPING
DESIGN SECTION
NEW DELHI
\\Akjha\work contrac\standard TS for Pipe Line WC (Vol-II) MASTER FOLDER\04A major water crossing\Major Water Crossing -Final 04.doc
STANDARD SPECIFICATION
TITLE MAJOR WATER CROSSINGS SPECIFICATION NO. PAGE 4 OF 14
c) Buoyancy studies
MEC/S/05/62/04 REVISION 0
d) Preparation of fabrication yard and launching areas.
e) Pipeline construction details (handling, stringing, welding, concrete
coating etc.)
f) Pre-test procedure including trial mix, design & tests for concrete coating.
g) Procedure for corrosion coating of field joint
h) Dredging, anchoring program, spoil-deposit and trench survey method
including facilities for COMPANY.
i) Pulling or other installation method and related calculations.
j) Pulling arrangement including launchway and anchoring and breaking
device.
k) Trench correction before launching.
l) Method of positioning and sinking of pipeline.
m) Method of rectification of damages to the pipeline, during launching.
n) Method of backfilling, bank protection and survey.
o) Final test procedure after backfilling.
p) Safety systems during launching, rope tests.
q) Communication.
r) Abandonment and recovery procedures concurred.
s) Necessary permission from concerned authorities for crossing.
COMPANY shall inform CONTRACTOR within 21 days if any objection against
the document and procedure described requires resubmission by
CONTRACTOR.
Approval by COMPANY of the methods used by CONTRACTOR shall in no way
relieve CONTRACTOR from the sole responsibility for safe and satisfactory
installation of the crossing.