{"operation":"document","citation":"PHMSA Report 20130048","title":"TENNESSEE GAS PIPELINE COMPANY — Gas transmission and gathering — incident on 2013-05-17","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2013-06-11","effective_on":"2013-05-17","summary":"Gas transmission and gathering incident in NATCHITOCHES, NATCHITOCHES County, LA. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 3632 NATURAL GAS released, $0 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: not significant, not serious.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-incident-d1fbd7c6914011d437263526.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-d1fbd7c6914011d437263526.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-d1fbd7c6914011d437263526","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 NATCHITOCHES, NATCHITOCHES County, LA. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 3632 NATURAL GAS released, $0 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: 20130048.\n\nOperator ID: 19160.\n\nReported incident date: 5/17/2013 16:55.\n\nLocation detail: 40\n\nCause detail: VALVE LEFT OR PLACED IN WRONG POSITION, BUT NOT RESULTING IN AN OVERPRESSURE\n\nCause detail: TENNESSEE GAS PIPELINE (TGP) EMPLOYEES WERE TAKING DISCHARGE PIPING OUT OF SERVICE AT THE TGP NATCHITOCHES COMPRESSOR STATION (STATION 40) MAY 17, 2013 IN ORDER TO PREPARE FOR IMP HYDROSTATIC TESTING. THE EMPLOYEES FAILED TO ISOLATE A RELIEF VALVE DURING THE DEPRESSURIZATION SUCH THAT WHEN THE RELIEF VALVE'S SENSING LINE LOST PRESSURE, THE RELIEF VALVE ACTIVATED AS IT WAS DESIGNED TO DO. THE RELIEF VALVE RELEASED NATURAL GAS TO THE ATMOSPHERE IN A VOLUME THAT EXCEEDED THE INCIDENT REPORTABILITY LEVEL OF 3,000 MCF. UPON HEARING THE NOISE OF THE RELEASE, THE RELIEF VALVE'S ISOATION VALVE WAS CLOSED TO STOP THE RELEASE. THE RELIEF WAS RESET FOR NORMAL OPERATION.\n\nPHMSA trend classification: not significant, not serious.\n\nPHMSA standardized cause: INCORRECT OPERATION — INCORRECT VALVE POSITION.\n\nPHMSA indexed costs: $14,700 reported total cost, $11,810.908 in 1984 dollars, $14,693.612 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":1704}