Bloomberg Law
Sept. 24, 2019, 7:56 PM

Oversight Failures Led to Gas Pipeline Explosions, NTSB Finds

Sylvia Carignan
Sylvia Carignan

Overpressurized natural gas pipelines and a lack of oversight led to the deadly explosions in Massachusetts’ Merrimack Valley, the National Transportation Safety Board determined Sept. 24.

Members of the National Transportation Safety Board met Sept. 24 to discuss the probable cause behind the fatal 2018 gas pipeline accident.

The investigators’ preliminary findings spurred legislation to address gas pressure issues in cast iron lines, though pipeline safety legislation is facing roadblocks in the House.

In the accident, workers for NiSource Inc.'s Columbia Gas of Massachusetts were replacing cast iron gas pipes shortly before issues with pressurization caused ...

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