Does PHMSA expect the operator of an alternative MAOP pipeline to run geometry and high resolution MFL tools at separate time intervals?
49 CFR 192.920(d)(9)(i)(A) and (B) require operators to run geometry tool and high resolution magnetic flux (MFL) tool as follows: (A) Assess using a geometry tool after the initial hydrostatic test and backfill and within six months after placing the new pipeline segment in service; and (B) Assess using a high resolution magnetic flux tool within three years after placing the new pipeline segment in service at the alternative maximum allowable operating pressure. Operators of pipelines operating under the alternative MAOP Rule must perform high resolution deformation tool inspections, remediate any findings in accordance with the Interim Guidelines for Confirming Pipe Strength in Pipe Susceptible to Low Yield Strength for Gas Pipelines. Inspections for low strength pipe and any pipe repairs/removals must be completed prior to operating the pipeline alternative MAOP, operating above 72% SMYS. The operator may elect to run the geometry and high resolution MFL tools in combination or sep
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