Should operators archive previous versions of their assessment plans so PHMSA Pipeline Safety can track changes to these plans over time?
PHMSA Pipeline Safety expects that changes to the Baseline Assessment Plan will occur as information is gleaned from the initial assessments, the integration of assessment results with other data, and operator risk analyses that utilize this new information. Operators must record and retain the technical basis for changes to their Baseline Assessment Plans. This information must be available for PHMSA Pipeline Safety review during inspections. While archiving previous versions of assessment plans is not required, an operator must have adequate documentation to show how the plans have changed and the technical justification for those changes.
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