Pipeline Safety: Grant of Special Permit; TransCanada Pipelines Limited

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The Pipeline and Hazardous Materials Safety Administration (PHMSA) is granting TransCanada Pipelines Limited (TransCanada) a special permit waiving compliance from the Federal pipeline safety regulation in 49 CFR 192.611 for two pipeline segments in the Portland Natural Gas Transmission System, described below under "Pipeline System Affected." The regulation requires natural gas pipeline operators to confirm or revise the maximum allowable operating pressure of a pipeline after a change in class location.