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5. Summarized acceptance criteria
There are no specific rules or guidelines for the acceptance criteria of
existing pipeline using a certain internal inspection method.
Fitness-for-services of other pipeline can be determined using the
established criteria from this study.
Parameters to be considered in the uncertainties of flaw sizing include
the crack length, depth, orientation of the flaw, whether or not the flaw
is surface breaking, and number of flaws.
The method of inspection affects the acceptance criteria. Imposing
limitations at or beyond the limits of detection capability would
obviously be counter-productive.
Table 2 Acceptance criteria for
evaluation of detected defects
The acceptance criteria for
evaluating defects shown in Table 2 shall be used when analyzing the
results of the internal inspection.
References
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