Volume-II of IV - GAIL

MECON LIMITED
REGD. OFF : RANCHI (BIHAR)
PROCESS & PIPING
DESIGN SECTION
NEW DELHI
STANDARD SPECIFICATION
TITLE PIPELINE PRE-COMMISSIONING SPECIFICATION NO. PAGE 2 OF 8
AND COMMISSIONING OF
PIPELINE PROJECT MEC/S/05/62/61 REVISION - 1
1.0 INTRODUCTION
2.0 GENERAL
This specification covers the minimum technical requirements for precommissioning
and commissioning of gas pipeline, including precommissioning
activities such as pre-commissioning checks, flushing of
terminal piping, dewatering, swabbing and nitrogen purging.
The scope of work for testing and commissioning including pre-commissioning
activities shall include, but not limited to the manpower, machinery &
equipment, detailed procedures, materials and consumables, communications
etc. to perform the work satisfactorily.
Contractor shall prepare detailed procedures for flushing of terminal piping,
dewatering, swabbing, inertisation and commissioning of the pipeline, covering
all aspects of work for company’s approval. This shall include, but not limited
to, the sequence and description of all operations, data on materials,
equipment, instruments, consumables, communications systems, necessary
calculations, detailed time schedule and organisation chart.
The Contractor shall be responsible for demonstrating the successful
completion of all the activities i.e. flushing of terminal piping, dewatering,
swabbing, inertisation and commissioning of the pipeline. All necessary work
to perform the job successfully including necessary modifications required shall
be the responsibility of the Contractor.
Contractor shall design and supply all temporary line connections, valves,
instruments, etc. as required during the various operations.
In the event of any detail which is not fully addressed, it is warranted by
Contractor that work shall be performed in accordance with company’s
specification and the best recognised practices in the on-shore pipeline
industry.