standard specification for erection tender - GAIL

q) Platforms & cross over to be provided for the operation and maintenance of
the equipments installed in the skid. Proper spacing to be maintained
between the equipments for operation & maintenance. The vent & drains
shall be properly supported in the skid. All the vents shall be at a height of
minimum 3 meters above the working platforms.
r) All the softwares used in the system and as specified elsewhere, licensed in
the name of GAIL (I) Ltd. All the hardware and software required for
calibration and using diagnostic features of supplied instruments like Flow
meters, Flow computers, gas chromatograph etc.
s) All pipes, tubings, fittings, valves, gaskets, bolts, nuts, spades, etc., within
the skid battery limit.
t) Earth bonding system and earthing boss.
u) Lifting lugs and spreader beam / frame, foundation Anchor bolts,
copper jumpers for flanges for the skid (Lifting lugs and their
supporting structure shall be designed for load equal to two times
the weight to be lifted); All Tie-ins with flanged connections shall be
in bidder’s scope. Details of skid assembly, supporting positions,
Anchor bolt layout and equipment weights to be provided prior to
equipment supply
v) (shipping weight). The detailed stress analysis of the skid structure
and frames shall be submitted by the vendor.
w) Stainless steel nameplate for each tagged equipment and
component.
x) All Tie-ins (flanged connections) with nuts and bolts.
y) Inlet and Outlet matching flanges and Studs & nuts, suitable gaskets
shall also be supplied along-with the skid. In case a single Pilot/
spring is not capable of meeting the pressure set point requirement,
additional spring and / or pilot shall be provided along with the
Pressure Regulators and Slam shut valves.
z) The sun / rain protection shed for electronic instruments shall also
be supplied by the bidder
aa) A structural skid complete with necessary drip pan, walkways,
staircase, platforms, gratings, handrails for access for operation and
maintenance.
bb) Status Indications required for Metering inlet and outlet Ball valves
(mainline) and Slam Shut Valves, as indicated in typical Schematic
shall be provided in flow computer and control panel (supplied with
skid). Status indication of both SSV shall be available on both the
Flow computers. Inlet Pressure and temperature shall be available on
the both Flow computers. Signal from Limit switch of SSV and
metering Inlet Ball Valve and outlet ball valve shall go to Flow
Computer and from FC to GAIL SCADA. Status data, FC data, Gas
Composition, FCV set point etc shall also be available (R/W) through
GSM modem/ SCADA
GAIL (INDIA) LTD
NEW DELHI
SCOPE OF WORK
DOCUMENT NO. REV-0
0015-01-08-06-001-SW
Page 15 of 43
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