Page 352 - Pipeline Pigging Technology
P. 352
Bi-directional ultrasonic pigging
Photo 5. The bi-directional ultrasonic pig after passing through the
pipeline.
CONCLUSION
The bi-directionally-travelling ultrasonic inspection pig has successfully
been used to undertake an inspection of an offshore pipeline to a PLEM, and
has proven its technological ability to provide valid data for efficient, cost-
saving maintenance.
NKK will apply this technique to the inspection of offshore crude oil
loading pipelines, where to date inspection has been considered impossible
by means of conventional inspection pigs.
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