{"operation":"document","citation":"PHMSA Report 20110392","title":"WILLIAMS GAS PIPELINE - TRANSCO — Gas transmission and gathering — incident on 2011-12-03","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2011-12-12","effective_on":"2011-12-03","summary":"Gas transmission and gathering incident in SWEETWATER, MARENGO County, AL. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 61700 NATURAL GAS released, $6,961,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings. PHMSA trend classification: significant incident, not serious.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-incident-8bbf27dd3cd7b237f0f98d33.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-8bbf27dd3cd7b237f0f98d33.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-8bbf27dd3cd7b237f0f98d33","source_url":"https://data.transportation.gov/api/views/27nc-rsge/files/2b05c2d8-d14a-4c56-ac1c-7d23a4bc31c8?download=true&filename=Gas%20Transmission%20%26%20Gathering%20Incident%20Data%20-%20January%202010%20to%20present.zip","body":"Gas transmission and gathering incident in SWEETWATER, MARENGO County, AL. Reported cause: CORROSION FAILURE. Reported consequences: 0 fatalities, 0 injuries, 61700 NATURAL GAS released, $6,961,000 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.\n\nReport number: 20110392.\n\nOperator ID: 19570.\n\nReported incident date: 12/3/2011 15:07.\n\nLocation detail: 817.77\n\nCause detail: EXTERNAL CORROSION\n\nCause detail: ON SATURDAY, DECEMBER 3, 2011, TRANSCO EXPERIENCED A RUPTURE ON ITS 36 INCH MAINLINE C APPROXIMATELY 7 MILES DOWNSTREAM OF STATION 90 NEAR LINDEN, AL. THE RUPTURE DID IGNITE, HOWEVER THERE WERE NO INJURIES. THERE WAS APPROXIMATELY 8 ACRES OF FORESTED AREA BURNED. OPERATIONS PERSONNEL RESPONDED AND HAD THE SEGMENT ISOLATED WITHIN 45 MINUTES OF THE RUPTURE. MAINLINE B WAS PARTIALLY EXPOSED BY THE RUPTURE AND WAS TAKEN OUT OF SERVICE AND PHMSA ORDERED THAT THE ADJACENT MAINLINES (MAINLINES A, D, AND E) BE OPERATED WITH A 20% REDUCTION IN PRESSURE. A SUBSEQUENT CONFERENCE CALL WITH PHMSA ON MONDAY, DECEMBER 5TH, 2011, RESULTED IN PHMSA ALLOWING WGP TO OPERATE MAINLINES 30 INCH A, 36 INCH D, AND 42 INCH E WITHOUT ANY PRESSURE LIMITATIONS. A ROOT CAUSE ANALYSIS WAS COMPLETED AND APPROVED BY PHMSA. THE CAUSE OF THE ACCIDENT WAS DUE TO EXTERNAL CORROSION.\n\nPHMSA trend classification: significant incident, not serious.\n\nPHMSA standardized cause: CORROSION — EXTERNAL.\n\nPHMSA indexed costs: $7,658,770 reported total cost, $4,121,492.088 in 1984 dollars, $10,078,257.539 in current-year dollars.\n\nPHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.","truncated":false,"body_characters":1831}