{"operation":"document","citation":"PHMSA Report 20120044","title":"EQT MIDSTREAM — Gas transmission and gathering — incident on 2012-04-07","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2012-05-04","effective_on":"2012-04-07","summary":"Gas transmission and gathering incident in WESTON, LEWIS County, WV. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 11200 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-ddd97faee37ed82736db0c4b.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-ddd97faee37ed82736db0c4b.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-ddd97faee37ed82736db0c4b","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 WESTON, LEWIS County, WV. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 11200 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: 20120044.\n\nOperator ID: 31604.\n\nReported incident date: 4/7/2012 1:48.\n\nLocation detail: 130+20 GSF943\n\nCause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT\n\nCause detail: AT APPROXIMATELY 1:12 AM APRIL 7, 2012 GAS CONTROL RECEIVED AN ALARM FOR COPLEY COMPRESSOR STATION (544 COPLEY ROAD, WESTON, WV 26452-7174) UNIT #5 COMPRESSOR SHUT DOWN. GAS CONTROL IMMEDIATELY CONTACTED THE ON-CALL EQT COMPRESSOR TECHNICIAN WHO REPORTED TO THE SITE. THE COPLEY STATION ESD TRIPPED AT APPROXIMATELY 1:48 AM WHILE THE COMPRESSOR TECHNICIAN WAS EN ROUTE. THE COMPRESSOR TECHNICIAN ARRIVED AT THE SITE AT APPROXIMATELY 2:03 AM AND DETERMINED ALL ESD VALVES DID NOT CLOSE AND GAS WAS VENTING TO THE ATMOSPHERE. THE COMPRESSOR TECHNICIAN PROCEEDED TO SHUT OFF ONE BLOCK VALVE THAT WAS 100% OPEN AND TWO BLOCK VALVES THAT WERE 20% OPEN. THE VALVES WERE CLOSED AND GAS SHUT OFF AT APPROXIMATELY 2:08 AM. EQT FACILITIES ENGINEERING INVESTIGATED AND DETERMINED TWO OF THREE AIR COMPRESSORS THAT HOLD THE COPLEY AIR SYSTEM PRESSURE UP HAD SHUT DOWN ON HIGH TEMPERATURE. THE THIRD AIR COMPRESSOR COULD NOT HOLD THE SYSTEM UP AND WHEN THE AIR PRESSURE DECLINED BELOW 100 PSIG THE SYSTEM WENT INTO ESD. THERE WAS NOT ENOUGH SUPPLY AIR IN THE SYSTEM TO FULLY SHUT THREE OF THE ESD VALVES. DESIGN ENGINEERING CALCULATED THE GAS LOSS TO BE 11.2 MMCF WHICH REQUIRED AN INCIDENT REPORT FILING.\n\nPHMSA trend classification: not significant, not serious.\n\nPHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.\n\nPHMSA indexed costs: $23,608 reported total cost, $19,653.247 in 1984 dollars, $24,261.28 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":2199}