Page 178 - Pipeline Pigging Technology

Inspection of the Forties sea line

Fig. 12. Girth weld corrosion - circumferential increase.
with that obtained from operations 1 and 2, similar to that produced in Fig.9.
Graphs were also produced showing girth-weld depth and circumferential
increase similar to those shown in Figs 10 and 11. As a final report, the deepest
pitting corrosion found in the pipeline was given and then compared with
those identified from the previous runs.

CONCLUSIONS

The use of the British Gas inspection system in the Forties sea line enabled
reliable and accurate inspection results to be obtained for the pipeline, and
thus ensured that decisions taken by BP on the future operation of the
pipeline were taken with the maximum amount of knowledge and informa-
tion being available on the condition of the line.

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