PHMSA Gas Transmission (GT) Integrity Management
Time: 07/24/2014 10:59 PM

Protocol Item D.11

D.11 SCCDA Data Gathering and Evaluation

If the operator elects to use SCCDA, verify that the operator's SCCDA evaluation process complies with ASME B31.8S-2004, Appendix A3 in order to identify whether conditions for SCC of gas line pipe are present and to prioritize the covered segments for assessment. [192.929(b)(1)]

  1. Verify that the operator has a process to gather, integrate, and evaluate data for all covered segments to identify whether the conditions for SCC are present and to prioritize the covered segments for assessment. [192.929(b)(1)]
    1. Verify that the operator's process gathers and evaluates data related to SCC at all sites it excavates during the conduct of its pipeline operations (not just covered segments) where the criteria indicate the potential for SCC. [192.929(b)(1) and ASME B31.8S-2004, Appendix A3.3]
    2. Verify that the data includes, as a minimum, the data specified in ASME B31.8S-2004, Appendix A3.
    3. Verify that the operator addresses missing data by either using conservative assumptions or assigning a higher priority to the segments affected by the missing data, as required by ASME B31.8S-2004, Appendix A3.2.

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