{"operation":"document","citation":"PHMSA Report 20180109","title":"TRANSCONTINENTAL GAS PIPE LINE COMPANY — Gas transmission and gathering — incident on 2018-09-20","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2018-11-08","effective_on":"2018-09-20","summary":"Gas transmission and gathering incident in OLD BRIDGE, MIDDLESEX County, NJ. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 0 NATURAL GAS released, $200,000 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-f68852e74103ebbdac489b24.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-f68852e74103ebbdac489b24.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-f68852e74103ebbdac489b24","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 OLD BRIDGE, MIDDLESEX County, NJ. Reported cause: INCORRECT OPERATION. Reported consequences: 0 fatalities, 0 injuries, 0 NATURAL GAS released, $200,000 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: 20180109.\n\nOperator ID: 19570.\n\nReported incident date: 9/20/2018 9:04.\n\nLocation detail: 99+29\n\nCause detail: VALVE LEFT OR PLACED IN WRONG POSITION, BUT NOT RESULTING IN AN OVERPRESSURE\n\nCause detail: AT APPROXIMATELY 8:04 AM CST ON 09/20/2018, UNIT #3 @ COMPRESSOR STA 207 WAS SCHEDULED FOR AN AUTOMATIC BLOW DOWN DUE TO AN UPCOMING PROJECT TO REMOVE THE INLET STRAINER. WHEN UNIT #3'S BLOWDOWN VALVE OPENED, GAS ENTERED THE CHARCOAL FILLED DEODORIZER AND WOULD NORMALLY FLOW UP AND OUT OF THE TOP OF THE STACK ABOVE THE BUILDING ROOFLINE TO ATMOSPHERE. DUE TO A 4\" DRAIN LINE AT THE BOTTOM OF THE DEODORIZER VESSEL IN THE OPEN POSITION, THE VENTING GAS AND CHARCOAL WERE ABLE TO ENTER INTO THE DRAIN SYSTEM OF COMPRESSOR BUILDINGS 1&2. THIS IN TURN ACTIVATED BOTH BUILDINGS EMERGENCY SHUT DOWN (ESD) SYSTEMS AS DESIGNED AT 20% LEL (ESD) AND 40% LEL (ESD 2). THE STATION WAS SHUT DOWN IN A SAFE STATE AND THE BUILDING'S FANS EVACUATED THE GAS. WILLIAMS' PERSONNEL RESPONDED TO THE SITE AND INITIATED THE STATIONS EMERGENCY ACTION PLAN WITH THE LOCAL EMERGENCY RESPONDERS.\n\nPHMSA trend classification: significant incident, not serious.\n\nPHMSA standardized cause: INCORRECT OPERATION — INCORRECT VALVE POSITION.\n\nPHMSA indexed costs: $231,540 reported total cost, $110,850.437 in 1984 dollars, $272,367.834 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":1916}