{"operation":"document","citation":"PHMSA Report 20180057","title":"ALGONQUIN GAS TRANSMISSION, L.L.C. (SPECTRA ENERGY PARTNERS, LP) — Gas transmission and gathering — incident on 2018-05-05","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2018-06-04","effective_on":"2018-05-05","summary":"Gas transmission and gathering incident in CROMWELL, MIDDLESEX County, CT. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 5805 NATURAL GAS released, $1,000 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: not significant, not serious.","machine_formats":{"json":"https://regulus.evalyn.ai/document/phmsa-incident-2e2ed5f6065127880e406058.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-2e2ed5f6065127880e406058.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-2e2ed5f6065127880e406058","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 CROMWELL, MIDDLESEX County, CT. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 5805 NATURAL GAS released, $1,000 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: 20180057.\n\nOperator ID: 288.\n\nReported incident date: 5/5/2018 1:30.\n\nLocation detail: CROMWELL CS\n\nCause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT\n\nCause detail: A RELIEF VALVE AT THE CROMWELL COMPRESSOR STATION ON THE ALGONQUIN GAS TRANSMISSION PIPELINE SYSTEM RELEASED NATURAL GAS TO ATMOSPHERE AT 1:30 AM ON MAY 5, 2018 WHILE PIPELINE SYSTEM WAS OPERATING BELOW THE RELIEF VALVE'S SET POINT. THE AMOUNT OF NATURAL GAS RELEASED EXCEEDED 5 MILLION CUBIC FEET BEFORE THE RELIEF VALVE WAS ISOLATED. THE APPARENT CAUSE OF THE INADVERTENT OPERATION OF THE RELIEF VALVE WAS ITS CONTROL PILOT DRIFTING OFF SET POINT.\n\nPHMSA trend classification: not significant, not serious.\n\nPHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.\n\nPHMSA indexed costs: $18,415 reported total cost, $16,739.923 in 1984 dollars, $21,143.954 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":1462}