U. S. steps up rules around pipelines

U. S. officials said Thursday they want tighter safety rules for pipelines carrying crude oil, gasoline and other hazardous liquids after a series of ruptures that included the costliest onshore oil spill in the nation’s history in Michigan.

The U. S. Department of Transportation proposed expanding pipeline- inspection requirements to include rural areas currently exempt and for companies to more closely analyze the results of their inspections.

The agency also would make companies re- check lines following floods and hurricanes, and submit information on thousands of kilometres of smaller lines that fall outside existing regulations.

The Associated Press obtained details of the proposal in advance of Thursday’s formal announcement. It covers more than 322,000 kilometres of hazardous liquids pipelines that crisscross the U. S. — a network that expanded rapidly over the past decade as domestic oil production increased.

Other pipeline ruptures in recent years have fouled waterways in Montana, California, Virginia and elsewhere with crude oil and other petroleum products.

“This is a big step forward in terms of strengthening our regulations,” said Marie Therese Dominguez, chief of the Transportation Department’s Pipeline and Hazardous Materials Safety Administration. “It’s timely, and it’s raising the bar on safety.”

The new rules have been in the works since 2010, when more than 3 million litres of crude oil spilled into the Kalamazoo River in Michigan and other waterways from a ruptured line operated by Enbridge Inc. of Calgary.

Investigators with the National Transportation Safety Board cited corrosion and a crack in the line as the cause, and blamed the accident in part on ineffective oversight and “weak regulation” from the pipeline safety administration.

Cleanup costs for the spill exceeded US$ 1 billion, making it the costliest onshore oil spill ever in the U. S., NTSB chairman Christopher Hart said this week in testimony before the U. S. Senate commerce, science and transportation committee.

If the proposed changes had been in place, the requirements could have prevented the Michigan spill and 237 other accidents between 2010 and 2014, transportation officials said.

The accidents released more than 45 million litres of oil, gasoline and other products resulting in $ 118 million in costs and damages.

The proposed rules also expand requirements for leak detection systems to include all new, regulated pipelines.

Current rules cover only those lines in areas with a large population or environmentally sensitive features such as drinking water supplies.

The changes could cost pipeline companies a combined $ 22.5 million annually, according to the agency.