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The information in this report is … Prior to the over-pressure event, a Columbia Gas-contracted work crew, which included a Columbia Gas inspector, was performing a Columbia Gas-designed …
Date: 7/16/2019 Size: 81KB

http://www.ntsb.gov/investigations/accidentreports/pages/pld18mr003-preliminary-report.aspx

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a buried 20-inch-diameter interstate natural gas transmission pipeline, owned and operated by Columbia Gas Transmission Corporation, ruptured in a sparsely …
Date: 7/16/2019 Size: 73KB

http://www.ntsb.gov/investigations/accidentreports/pages/par1401.aspx

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Columbia Gas of Virginia, Inc., Natural Gas Explosion and Fire … Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Microsoft SharePoint …
Date: 7/16/2019 Size: 71KB

http://www.ntsb.gov/investigations/accidentreports/pages/par8003.aspx

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Columbia Gas of West Virginia, Inc. … Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Microsoft SharePoint Foundation-compatible HTML editor such as …
Date: 7/16/2019 Size: 71KB

http://www.ntsb.gov/investigations/accidentreports/pages/par7404.aspx

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Columbia Gas of West Virginia, Inc., Explosion and Fire … Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Microsoft SharePoint Foundation-compatible …
Date: 7/16/2019 Size: 71KB

http://www.ntsb.gov/investigations/accidentreports/pages/par8404.aspx

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system was owned and operated by Columbia Gas of Massachusetts (Columbia Gas), a subsidiary of NiSource, Inc. The system … Note: This report was reissued on December 6, 2018 with a …
Date: 7/16/2019 Size: 74KB

http://www.ntsb.gov/investigations/accidentreports/pages/psr1802.aspx

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Columbia Liquefied Natural Gas Corporation Explosion and Fire … Unable to display this Web Part. To troubleshoot the problem, open this Web page in a Microsoft SharePoint …
Date: 7/16/2019 Size: 71KB

http://www.ntsb.gov/investigations/accidentreports/pages/par8002.aspx

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Report Pipeline: Over-pressure of a Columbia Gas of Massachusetts Low-pressure Natural Gas Distribution System … Columbia Gas Transmission Corporation Pipeline Rupture …
Date: 7/16/2019 Size: 134KB

http://www.ntsb.gov/investigations/accidentreports/pages/pipeline.aspx

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On behalf of the entire NTSB … 13, prior to the overpressure event, a Columbia Gas-contracted work crew, which included a Columbia Gas inspector, executed one of the Columbia Gas-designed …
Date: 7/16/2019 Size: 73KB

http://www.ntsb.gov/news/speeches/rsumwalt/pages/sumwalt-20181126.aspx

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Three types of pipelines—transmission, distribution, and … Over-pressure of a Columbia Gas of Massachusetts Low-pressure Natural Gas Distribution System, Merrimack Valley …
Date: 7/16/2019 Size: 68KB

http://www.ntsb.gov/safety/mwl/pages/mwlfs-19-20/mwl10-fsp.aspx