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Official: Pressure sensors focus of gas explosions probe | TribLIVE.com
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Official: Pressure sensors focus of gas explosions probe

The Associated Press
| Sunday, September 16, 2018 9:00 p.m
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Massachusetts Gov. Charlie Baker tours a home where a young man was killed during a gas explosion in Lawrence, Mass, Friday, Sept. 14, 2018. Investigators worked Friday to pinpoint the cause of a series of fiery natural gas explosions that killed a teen driver in his car just hours after he got his license.
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A collapsed home and car sit damaged on Chickering Street in Lawrence, Mass., Thursday, Sept. 13, 2018, after a series of gas explosions in several communities north of Boston. Authorities said Leonel Rondon died after the chimney toppled by the exploding house crashed into his car in the driveway. He was rushed to a Boston hospital but pronounced dead there in the evening.

LAWRENCE, Mass. — The investigation into the Boston-area natural gas explosions is partially focused on pressure sensors that were connected to a gas line that was being taken out of service shortly before the blasts, the head of the National Transportation Safety Board said Sunday.

NTSB Chairman Robert Sumwalt said the sensors can signal for gas pressure to be increased if the pressure gets too low. He said investigators will try to determine whether those sensors played any role in Thursday’s explosions and fires.

Dozens of homes were destroyed or damaged, a teenager was killed and dozens of people were injured in Lawrence, North Andover and Andover. Thousands were forced to leave their homes.

Also Sunday, residents in the three communities north of Boston were allowed to return to their homes after crews finished shutting off nearly 8,600 gas meters. Electricity was restored to all the affected homes and businesses, but gas service may not be restored for weeks.

“It’s evident to me and to all of us the Merrimack Valley and the residents of our state are being as supportive as they can be and as kind as they can be to one another during this most difficult time,” Gov. Charlie Baker said at a news conference Sunday. “We still have a very long way to go but we’re very happy that people can return to their homes this morning.”

Schools in Lawrence will be closed Monday because of the natural gas situation, officials said.

Sumwalt said the investigation is focused on high pressure in pipelines. On Saturday, he said officials will be looking at how local Columbia Gas officials responded to a “pressure increase” in the Lawrence area that was detected at the company’s pipeline control center in Columbus, Ohio, prior to the explosions and fires. He said there was no evidence the explosions were intentional.

Columbia Gas on Sunday turned away hundreds of Lawrence residents who wanted to make damage claims because it couldn’t handle the deluge, The Boston Globe reported. The company told residents, many of whom waited for several hours, to come back Monday.

“I am tired. I am frustrated,” Renata Rena, who waiting in line with her 3-year-old daughter, told the newspaper.

Joe Hamrock, chief executive of Columbia Gas’ parent company, NiSource, said Sunday that the company was taking full responsibility for what happened and is implementing a service restoration plan. He said the devastation and tragedy caused by the explosions are heartbreaking.

“We’re in this for the long run,” Hamrock said. “We know this has damaged the confidence and trust in our company and what we do. Our full commitment is restoring that trust and that confidence.”

Officials said gas company technicians will turn all the meters back after safety inspections of the entire system are complete — a process expected to take several weeks. They warned residents not to turn the meters back on themselves, not to turn on gas appliances until service is restored and to call 911 and leave their homes if they smell gas.

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