Page 169 - Pipeline Pigging Technology

Pipeline Pigging Technology

Fig.4. Performance specification.

The multi-profile vehicle run (Fig.6) is a deformable vehicle which repre-
sents the outside diameter and length of the inspection vehicle and thus
proves the pipeline bore to be acceptable for an inspection vehicle run and
minimizes the risk of either a stuck inspection vehicle or causing damage to
the vehicle during the run.
The cleaning, profile and inspection vehicles were all fully commissioned
at the On-Line Inspection Centre before the commencement of the opera-
tion, and transported offshore in special trays and containers to ensure that
the minimum amount of preparatory work and hence time was required on
the platform.
For each operation, a team of four British Gas personnel was deployed,
comprising one engineer and three skilled technicians able to commission or
repair the electronics and mechanical components on the inspection vehicle
if necessary.
During the operational planning phase, a site survey of both launch and
receive facilities had been carried out by the team engineer to ensure that all
equipment and facilities to be provided by BP were available at the required
time.

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