September 2021, Vol. 248, No. 9

Features

Performance Measures Needed to Assess Liquid Pipeline Regulations

By U.S. Government Accountability Office (GAO)   The U.S. liquid pipeline network runs for more than 220,000 miles (354,000 km) and is critical to the economy. Pipelines are considered a relatively safe way to transport crude oil and other hazardous liquids, but accidents can happen.   The Pipeline and Hazardous Materials Safety Administration (PHMSA) amended safety regulations in 2019. Stakeholders said the changes could improve safety without presenting significant challenges. However, several operators said they would need to modify or replace pipelines to accommodate certain inspection tools.    PHMSA has not developed measures to assess whether the changes i

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