{"operation":"document","citation":"PHMSA Report 20170013","title":"TENNESSEE GAS PIPELINE COMPANY — Gas transmission and gathering — incident on 2017-01-07","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2017-02-03","effective_on":"2017-01-07","summary":"Gas transmission and gathering incident in NUNELLY, HICKMAN County, TN. Reported cause: NATURAL FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 7456 NATURAL GAS released, $300 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-f341381b91a83ea6a4abdcec.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-f341381b91a83ea6a4abdcec.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-f341381b91a83ea6a4abdcec","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 NUNELLY, HICKMAN County, TN. Reported cause: NATURAL FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 7456 NATURAL GAS released, $300 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: 20170013.\n\nOperator ID: 19160.\n\nReported incident date: 1/7/2017 15:43.\n\nLocation detail: MP 559\n\nCause detail: TEMPERATURE\n\nCause detail: ON JANUARY 7, 2017 AT 3:43 PM TGP CENTERVILLE STATION 860 EXPERIENCED AN ESD DUE TO ACTIVATION OF A UVIR DETECTOR IN \"A\" COMPRESSOR BUILDING WHEN A SMALL AMOUNT OF GLYCOL LEAKING ON THE SPARK PLUG PORTS IGNITED BRIEFLY. ON-SITE PERSONNEL DETERMINED THAT A BLOCK-VALVE FAILED TO CLOSE UPON ACTIVATION OF THE ESD. THEY SHUT-IN THE BLOWDOWN VALVES TO STOP THE RELEASE AND BEGAN INVESTIGATING TO DETERMINE WHY THE BLOCK-VALVE DID NOT CLOSE. THE INVESTIGATION FOUND THAT DISTILLATE HAD FROZEN IN THE OPERATOR CONTROL-LINE FOR VALVE ABS5002R. THIS PREVENTED THE VALVE OPERATOR FROM PROPERLY ACTUATING TO SHUT THE VALVE RESULTING IN A TOTAL UNINTENTIONAL GAS LOSS OF 7,456 MCF TO ATMOSPHERE. FOLLOWING THE EVENT, PERSONNEL VERIFIED THAT ALL ESD SYSTEM-VALVES OPERATED PROPERLY AND THE CONTROL LINES ARE CLEAR OF LIQUIDS. GOING FORWARD THE STATION WINTERIZATION PLAN WILL INCLUDE A PROCESS TO ENSURE LIQUIDS ARE REMOVED FROM CONTROL LINES.\n\nPHMSA trend classification: not significant, not serious.\n\nPHMSA standardized cause: NATURAL FORCE DAMAGE — TEMPERATURE.\n\nPHMSA indexed costs: $25,650 reported total cost, $24,216.958 in 1984 dollars, $29,915.829 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":1887}