Image: Damaged Kleen Energy Systems plant in Middletown, Conn.
Douglas Healey  /  Getty Images
The explosion left huge pieces of metal that once encased the Kleen Energy Systems plant peeling off its sides.
updated 2/7/2010 10:54:47 PM ET 2010-02-08T03:54:47

An explosion that sounded like a sonic boom blew out walls of an unfinished power plant and set off a fire during a test of natural gas lines Sunday, killing at least five workers and injuring a dozen or more.

The explosion at the Kleen Energy Systems plant in Middletown, about 20 miles south of Hartford, could be heard and felt for miles.

Deputy Fire Marshal Al Santostefano told The Associated Press on Sunday night that no one was known to be missing amid the rubble from the damaged plant. Still, crews planned to spend all night going through debris in case there were any more victims. The cause of the gas explosion was unknown, and the investigation was to begin Monday morning, he said.

The explosion left huge pieces of metal that once encased the plant peeling off its sides. A large swath of the structure was blackened and surrounded by debris, but the building, its roof and its two smokestacks were still standing. Rescue crews had set up several tents alongside the site, which is a few miles from Wesleyan University on a wooded and hilly 137-acre parcel of land overlooking the Connecticut River.

The explosion happened around 11:15 a.m., Santostefano said. Mayor Sebastian Giuliano heard the blast.

"It felt almost like a sonic boom," Giuliano said at an evening news conference.

Santostefano said 50 to 60 people were in the area at the time of the explosion, and multiple contractors were working on the project, making it difficult to quickly account for everyone.

One of those killed was Raymond Dobratz, a 58-year-old plumber from Old Saybrook, said his son, Erik Dobratz, who called the elder man "a great dad."

Plant was almost complete
The 620-megawatt plant, which was almost complete, is being built to produce energy primarily using natural gas. Santostefano said workers for the construction company, O&G Industries, were purging the gas line when the explosion occurred.

Lynn Hawley, of Hartland, Conn., told The Associated Press that her son, Brian Hawley, 36, is a pipefitter at the plant. He called her from his cell phone to say he was being rushed to Middlesex Hospital.

"He really couldn't say what happened to him," she said. "He was in a lot of pain, and they got him into surgery as quickly as possible."

She said he had a broken leg and was expected to survive.

Officials had not released the conditions of the other injured people by Sunday evening, although they said at least a dozen people had injuries ranging from minor to very serious.

The thundering blast shook houses for miles.

"I felt the house shake. I thought a tree fell on the house," Middletown resident Steve Clark said.

Barrett Robbins-Pianka, who lives about a mile away and has monitored the project for years, said she was running outside and heard what she called "a tremendous boom."

"I thought it might be some test or something, but it was really loud, a definite explosion," she said.

Work on the plant was 95 percent complete, the mayor said.

Kleen Energy Systems LLC began construction on it in February 2008. It had signed a capacity deal with Connecticut Light and Power for the electricity produced by the plant, which was scheduled to be completed by mid-2010.

The company is run by former Middletown City Councilman William Corvo. A message left at Corvo's home was not returned Sunday. Calls to Gordon Holk, general manager of Power Plant Management Services, which has a contract to manage the plant, also weren't returned.

Energy Investors Funds, a private equity fund that indirectly owns a majority share in the power plant, said it is fully cooperating with authorities investigating the explosion. In a written statement, the company offered sympathy and concern and said it would release more information on the explosion as it becomes available.

Gov. M. Jodi Rell visited the scene Sunday and announced late in the day that the state had imposed a temporary no-fly zone for a three-mile radius around the site to ensure that the safety of the search and rescue workers would not be jeopardized. The restrictions were put in place until Monday evening.

The state's Emergency Operations Center in Hartford also was activated, and the Department of Public Health was called to provide tents at the scene for shelter and medical triage.

Daniel Horowitz, a spokesman with the U.S. Chemical Safety Board, said the agency is mobilizing an investigation team from Colorado and hopes to have the workers on the scene Monday.

Larger role of natural gas
Plants powered by natural gas are taking on a much larger role in generating electricity for the U.S. Gas emits about half the greenhouse gases of coal-fired plants and new technology has allowed natural gas companies to begin to unlock gas supplies that could total more than 100 years at current usage levels.

Natural gas is used to make about a fifth of the nation's electricity.

Safety board investigators have done extensive work on the issue of gas line purging since an explosion last year at a Slim Jim factory in North Carolina killed four people. They've identified other explosions caused by workers who were unsafely venting gas lines inside buildings.

The board voted last week to recommend that national and international code writers strengthen their guidelines to require outdoor venting of gas lines or an approved safety plan to do it indoors.

In February 2009, an explosion at a We Energies coal-fired power plant near Milwaukee burned six workers. The Occupational Safety and Health Administration is still investigating.

In November 2007, an explosion at a Dominion Virginia Power coal-fired plant in Massachusetts killed three workers, and in January 2007 one worker and nine others were injured at an American Electric Power plant of the same type in Beverly, Ohio.

© 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Video: Deadly blast rocks Conn. power plant

  1. Closed captioning of: Deadly blast rocks Conn. power plant

    >>> of the olympics. but we want to begin tonight with a massive explosion at a natural gas power plant that rocked central connecticut today, leaving a number of workers dead or missing and more than a dozen others injured. the blast occurred in the city of middletown at a plant that was still under construction, and it was so powerful it shook buildings and startled residents more than ten miles away . officials were quick to discount the possibility of terrorism, but tonight they are still trying to determine what exactly did happen and how many casualties there are. nbc's ron allen is in middletown tonight. he joins us with the latest. ron, good evening.

    >> reporter: good evening to you, lester. this was going to be one of the largest power plants in new england. it was about 95% completed. a gas-fired plant, not a nuclear plant . all day officials have been saying about 50 workers were at the facility, but late today they admitted they really don't know how many workers were there when the explosion happened. we do know that five are dead, 12 injured, and it's unclear how many are missing. emergency crews responded just after 11:00 from across the state to the kleen energy systems power plant on a hill overlooking middletown , connecticut. a powerful explosion that sent clouds of smoke into the air, that could be seen for miles. residents in surrounding towns, some 15 miles away , say the concussion shook their windows and jolted their nerves.

    >> it was like an explosion, an earthquake.

    >> reporter: it took firefighters at least an hour to put out the gas-fueled inferno.

    >> the fire is almost under control back here.

    >> reporter: then search and rescue . at least 50 workers were believed to be on the job who could be trapped in the rubble. their anxious families and colleagues converged on the plant, desperate for information.

    >> i just heard there was a gas explosion . i'm getting all kinds of phone calls from union brothers. and it's horrible, man. we've got some people up there. they've got little kids at home. we lost them.

    >> reporter: many of the injured were taken to this hospital.

    >> several of them were by report thrown 30 to 40 feet, and so the injuries that come with a fall or a throw.

    >> reporter: injuries such as a broken pelvis, a broken leg . according to reports from the hospital. the power plant was approved back in 2002 . under construction six years later. and scheduled to begin providing electricity in june for about 550,000 homes. a complex of several buildings. investigators say the gas lines were being purged, or cleared when the blast happened in the rear of the main building .

    >> it was connected with the gas, the natural gas pipe that was coming into the building. that was part of the involvement involvement. in the explosion. what caused it to explode, we're not sure yet.

    >> reporter: late today state and local officials gave this update.

    >> most of the people who were working there were evacuated from the building when they ran the tests. so it's not like there were 100 people in the building when the explosion occurred. but they're trying to figure out who was on the job today and where are they now.

    >> reporter: search and rescue operations continue tonight, and officials say that's likely to continue tomorrow. it's a huge and cavernous site. officials also say that there was no damage done to the environment, no harm to the water or air here, and they say that there is no threat of another explosion. lester.

    >> ron allen in central connecticut for us tonight. ron, thank you.

    >>> for millions of people this

Discuss:

Discussion comments

,

Most active discussions

  1. votes comments
  2. votes comments
  3. votes comments
  4. votes comments