Tennessee Gas Pipeline (TGPL) is a set of natural gas pipelines that run from the Texas and Louisiana coast through Arkansas, Mississippi, Alabama, Tennessee, Kentucky, Ohio, and Pennsylvania to deliver natural gas in West Virginia, New Jersey, New York, and New England. The long system is operated by the Tennessee Gas Pipeline Company, a subsidiary of Kinder Morgan. It is one of the largest pipeline systems in the United States. Its FERC code is 9. TGP's PHMSA pipeline operator i.d. is 19160.

History The first pipeline was constructed by Tennessee Gas Transmission Company (TGT) beginning in 1943. In 1996, TGT-owner Tenneco Energy was acquired by El Paso Corporation, which was in turn acquired by Kinder Morgan in 2012.

Expansion projects

In 2014, KM proposed Northeast Energy Direct Project (NED), a new branch of of greenfield pipeline to move natural gas from Pennsylvania to Wright, New York, and of greenfield pipeline to Dracut, Massachusetts.Clarence Fanto, Lenox looks at options ahead of Kinder Morgan's proposed pipeline route, Berkshire Eagle, June 15, 2014.

The Kinder Morgan proposal met with immediate resistance from local and state officials, conservation organizations, and more than 20 Massachusetts towns that the proposed pipeline would cross.Mary Douglas, "Stopping the pipeline: What are the options?," Berkshire Edge, http://theberkshireedge.comstopping-pipeline-options/, accessed July 7, 2014; Derek Gentile, Marching in opposition," Berkshire Eagle, July 7, 2014; Maureen Morine, "Tell Kinder Morgan to 'frack off'," Lowell Sun, July 1, 2014. Public and environmental safety was the primary concern, due to TGP's history of pipeline accidents.Ron P. Whittington, "Kinder Morgan's pipeline leak data raise questions," January 2–4, 2016, savannahnow.com/news, accessed 2016.01.06. The pipeline route was heavily debated amid complaints about eminent domain and widespread refusal of Kinder Morgan's requests to survey the route.Phil Demers, "Permission to survey revoked," Berkshire Eagle, July 12, 2014. The proposed route would cross land that is heavily wooded with sensitive eco-systems, conservation lands, wildlife reserves, state parks, farmland, towns, and the Connecticut River.Sen. Elizabeth Warren, "We can do better than pipeline," Berkshire Eagle, August 10, 2014; Phil Demers, "Speakers oppose Kinder Morgan's request to take land for pipeline," Berkshire Eagle, March 30, 2016.

KM proposed that "approximately 91% of the NED Market Path Component would be co-located along existing utility corridors/adjacent to TGP mainline. The total project (both Supply and Market Path Components) would be 82% co-located." An alternative would be to follow the Massachusetts Turnpike highway system from Western Massachusetts into Boston.

Supporters claimed that the pipeline would have positive impacts. "The pipeline is not only a pipeline for natural gas, but it is a pipeline for new construction and jobs." KM claimed, "NED helps sustain electric grids, reduce emissions, lower energy costs and spur economic growth region-wide." The new pipeline would "bring up to of natural gas from the Marcellus shale fields to New England and Canadian markets." The planned pipeline was roughly long and would be in diameter. The design would include "large, powerful compressor stations."

Detractors pointed out the safety issues involved with locating a high-volume, high-pressure gas transmission pipeline through towns and near neighborhoods that would be within the explosion blast zone of a leak.Ruth Bass, "Pipeline is explosive town issue," Berkshire Eagle, July 14, 2014. In the Duckworth–Eiber Report, researchers showed that many gas transmission pipelines are dangerously close to homes and schools.H. Noel Duckworth and Robert Eiber, Report On Assessment of Pipeline Integrity of Kinder-Morgan Conversion of the Rancho Pipeline To City of Austin Texas (June 2004), pp. 29-30, at primis.phmsa.dot.gov, accessed June 23, 2014.

Ultimately, the NED project was shelved due to a shortage of enough customers to justify an increased natural gas supply in New England."Kinder Morgan suspends Northeast Energy Direct project," Berkshire Eagle, Apr 20, 2016.

Significant incidents reported

From 2006 to 2017, according to Pipeline and Hazardous Materials Safety Administration (PHMSA) failure reports, TGP had 111 "significant incidents" with their pipelines, resulting in $89,815,380 in property damage and 19 federal enforcement actions.PHMSA Operator Information, Tennessee Gas Pipeline Company, Operator ID:19160, at , accessed 2018.01.08.

A "significant incident" results in any of the following consequences: fatality or injury requiring in-patient hospitalization $50,000 or more in total costs, measured in 1984 dollars liquid releases of five or more barrels (55 USgal/barrel) releases resulting in an unintentional fire or explosion.PHMSA 20-year trends, at https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-20-year-trends, accessed 2018.01.08.

From 2006 to 2017, 27 federal enforcement actions were initiated against TGP, with $422,500 in penalties. Federal inspectors were onsite at TGP locations for 661 days plus 187 days of accident investigations.PHMSA Federal Inspection and Enforcement Data for TGP at , accessed 2018.01.08.

From 2006 to 2017, faulty infrastructure caused most of TGP's onshore gas transmission pipeline accidents. Corrosion (internal or external), equipment malfunctions, manufacturing defects, faulty welds, and incorrect installation together accounted for 56% of leaks and more than $90 million in property damage.PHMSA Incident Data for TGP 2006-2017, at , accessed 2018.01.08.

Failures may be escalating as pipelines age. In the listings below, note the age of pipes that failed.

Accidents

According to PHMSA, Tennessee Gas Pipeline had at least 257 significant failures (leaks, fires, and explosions) from 1986 to 2017. This number does not include the less notable accidents that did not meet the criteria for reporting.Data sets of PHMSA Pipeline Safety-Flagged Incidents for 1986-2001, 2002-2009, and 2010-2017 can be downloaded from the tab by that name on the PHMSA Pipeline Incident Flagged Files page, https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-flagged-files, accessed 2018.01.10. The incidents below are merely a representative sample.

On March 4, 1965, a diameter TGP gas transmission pipeline explosion north of Natchitoches, Louisiana, destroying five homes and killing 17 people including nine children, the deadliest gas transmission pipeline accident in U.S. history. This explosion and others of the era, led to PHMSA's formation in 1967.See transcripts of "GAS BLAST KILLS 17 IN LOUISIANA," Corpus Christi Times, March 4, 1965, http://www.gendisasters.com/louisiana/53/natchitoches-la-gas-pipeline-explosion-mar-1965 , and "Pipeline Explosion, Natchitoches Parish, Louisiana," Natchitoches Times, March 11, 1965, at http://files.usgwarchives.net/la/natchitoches/newspapers/pipeline.txt, accessed 2018.01.08 On February 18, 2000, a 24-inch diameter Tennessee Gas Pipeline at Marcellus, New York, leaked natural gas when a pipe cracked. The crack was thought to be caused by a manufacturing defect in the pipe which had been installed in 1951.PHMSA Pipeline Safety-Flagged Incidents, gtgg1986to2001 spreadsheet, PHMSA Pipeline Incident Flagged Files page, https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-flagged-files, accessed 2018.01.10. On November 28, 2000, in Portland, Tennessee, a Tennessee Gas Pipeline Company maintenance crew was welding an oil lubrication line at a compressor station when an explosion and flash fire occurred, injuring three workers. Apparently, gas from the compressor migrated into a crankcase and was ignited by a spark. The equipment was installed in 1950.PHMSA Pipeline Safety-Flagged Incidents (1986-2001) link on the Pipeline Incident Flagged Files page at www.phmsa.dot.govdata-and-statisticspipelinepipeline-incident-flagged-files. On March 6, 2002, at Jeffersonville, Kentucky, a TGP pipe manufactured in 1950 ruptured at a compressor station, causing a fire and explosion. The failure originated at a longitudinal crack in a saddle fillet weld. The explosion caused $2 million in property damage.PHMSA data on gas transmission (GT) and gas gathering (GG) pipelines 1986-2017 can be found at the link to PHMSA Pipeline Safety-Flagged Incidents on the Pipeline Incident Flagged Files page at https://www.phmsa.dot.gov/data-and-statistics/pipeline/pipeline-incident-flagged-files, accessed 2018.01.09. On March 26, 2002, at Clay, Ohio, external corrosion thinned a pipe manufactured in 1966 to a point that it cracked and leaked natural gas.PHMSA data on GT & GG pipelines, 2002-2009. On May 21, 2002, at Kensington, Ohio, a landowner discovered dead vegetation in vicinity of a TGP pipeline. Company personnel investigated and found a pinhole leak on the longitudinal seam, a manufacturing defect. The pipe was manufactured in 1956. On September 24, 2004, at Hopkinton, Massachusetts, a TGP leak occurred in 24" diameter pipe at a "high consequence area" just upstream of a compressor station, in pipe manufactured in 1977. 28 people were evacuated as a precaution. The leak was apparently due to the pipe resting on a rock ledge which damaged the pipe, causing a pinhole perforation. On December 29, 2005, in Allen County, Kentucky, a 30-inch diameter TGP pipe manufactured in 1957 ruptured, leading to evacuation of more than 200 people. "It sounded like a jet plane ... just roaring." What made the situation so critical was the pressure and amount of gas flowing through the pipe.Burton Speakman, "Gas leak forces out 200," Bowling Green Daily News, Dec 29, 2005, at http://www.bgdailynews.com/news/gas-leak-forces-out/article_1a75c54c-6e5e-5f1f-b672-94fd3a7e2e52.html, accessed 1/11/2016. The failure was attributed to combined effects of pre-existing cracking introduced during original construction and longitudinal stresses induced by the terrain. The leak cause property damage of $908,032.PHMSA data on GT & GG pipelines 2002-2009. On July 22, 2006, near Campbellsville, Kentucky, a TGP 24" diameter pipeline exploded, blowing 25-foot chunk of pipe out of the ground; it landed 200 feet away, the pipe twisted and mangled, its external coating burned off. The pipe ruptured due to external corrosion more than two feet long at the bottom of a valley in an area of wet shale, known to cause corrosion on buried pipelines in this part of Kentucky.PHMSA Corrective Action Order, CPF No. 2-2006-3 007 H, a.k.a. CPF 220061007H. On February 17, 2007, at Cypress, Texas, TGP's 31-inch natural gas pipeline exploded 4 hours after a bulldozer hit it. Residents reported a loud explosion that shook the ground enough to set off car alarms, as well as "a rumbling sound" and a bright orange fireball. Firefighters "backfilled" the break with nitrogen.Anne Marie Kilday and Cindy Horswell, "Gas explosion rocks northwest Harris County," Houston Chronicle, Feb 18, 2007, http://www.chron.com/news/houston-texas/article/Gas-explosion-rocks-northwest-Harris-County-1583763.php, accessed 1/13/2016. The pipe was manufactured in 1948. On November 30, 2010, a 30" diameter Tennessee Gas Pipeline failed in a semi-rural area between Highway 1 and State Road 3191, two miles northwest of Natchitoches, Louisiana, 1/4 mile northeast of a country club, and 200 feet south of a residential subdivision. Louisiana State Police evacuated 100 homes. Investigation found the pipe had a crack 52 inches long and about half an inch wide. The failure site was near where TGP had a previous failure in 1965 with fatalities. That failure was attributed to stress corrosion cracking.PHMSA Corrective Action Order, Case CPF 420101007H.