Page 146 - Pipeline Pigging Technology

10 years of intelligent pigging

the detection and sizing of features;
distinguishing between internal and external features;
inspection close to weld areas.

In addition, Total Oil Marine believes in carrying out baseline inspections
on all new major pipelines.
The type of intelligent vehicle chosen depends upon the type of features
or defects which are of particular interest, as well as the logistics of running
such a vehicle. Ultrasonics may have a role in offshore lines where particular
interest is focused on internal corrosion at the 6 o'clock position. Good
cleaning programmes must be incorporated as part of the overall inspection
programme to remove as much debris as possible. This is especially true for
removing wax from oil pipelines.
Total Oil Marine would also like to stress that good record-keeping with
respect to pipeline history is vital in aiding the pipeline engineer to investigate
fully the importance of any defects or features located during an intelligent
pigging programme.

ACKNOWLEDGEMENTS

We wish to thank the owners of the Frigg Transportation System, i.e.

Norwegian Association Elf Aquitaine Norge AS
Den Norske Stats Oljeselskap AS
Norsk Hydro AS
Total Marine Norsk AS

UK Association Elf UK pic
Total Oil Marine pic

for the authorization to present the above information.

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