Will operators be expected to consider external conditions such as earthquake fault lines or mining subsidence in their integrity management program?
Yes. As part of the information and risk analysis required by 192.917 (b) and (c), an operator is expected to consider all information that can affect the likelihood and consequences of pipeline failure. 192.917 (b) requires that an operator gather and evaluate, as a minimum, the data specified in Appendix A to ASME/ANSI B31.8S. Section A9 of that Appendix addresses weather related and outside force threats, and includes topography, soil conditions, and earthquake faults among the data to be integrated. Thus, if such external risk factors are significant, they must be considered by the operator.
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