{"operation":"document","citation":"PHMSA Report 20170111","title":"CYPRESS GAS PIPELINE COMPANY — Gas transmission and gathering — incident on 2017-10-28","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2017-11-22","effective_on":"2017-10-28","summary":"Gas transmission and gathering incident in BATON ROUGE, WEST BATON ROUGE County, LA. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4000 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-743437750e276605e478b99f.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-743437750e276605e478b99f.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-743437750e276605e478b99f","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 BATON ROUGE, WEST BATON ROUGE County, LA. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 4000 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: 20170111.\n\nOperator ID: 12696.\n\nReported incident date: 10/28/2017 2:00.\n\nLocation detail: 81\n\nCause detail: MALFUNCTION OF CONTROL/RELIEF EQUIPMENT\n\nCause detail: AT 0200 PIPELINE CONTROL CENTER NOTICED A DROP IN PRESSURE ON BRW 1 PIPELINE NEAR THE BATON ROUGE GAS PLANT. PIPELINE CONTROL DISPATCHED A TECHNICIAN TO INVESTIGATE. TECHNICIAN ARRIVED ON SITE AT APPROXIMATELY 0310 AND FOUND A RELIEF VALVE RELIEVING TO ATMOSPHERE, VERIFIED PIPELINE PRESSURE WAS NOT EXCEEDING MAOP, AND CLOSED THE BLOCK VALVE UNDER THE RELIEF VALVE TO SECURE SITE. PIPELINE CONTROL CONTINUED MONITORING PIPELINE PRESSURE UNTIL A CERTIFIED TECHNICIAN ARRIVED TO MAKE REPAIRS. THE TECHNICIAN REPLACED THE PILOT ON THE RELIEF VALVE, SET NEW PILOT TO ESTABLISHED SETTING AND RETURNED THE SEGMENT TO NORMAL SERVICE. AT 0409 IT WAS DETERMINED THE VOLUME OF GAS RELEASED BY THE RELIEF VALVE EXCEEDED 3 MMSCF AND THE NRC WAS NOTIFIED AT 0419. VISUAL EXAMINATION OF THE RELIEF VALVE INDICATED FLUID BUILD-UP ON THE PILOT CAUSED IT TO RELIEF BELOW THE SET POINT. 48 HR. NRC NUMBER 1194628 INVESTIGATION OF THE RELIEF VALVE PILOT BY A THIRD PARTY VENDOR INDICATED THAT FLUID WAS PRESENT AND A FAILED O-RING SEAL WAS FOUND. THESE FACTORS CONTRIBUTED TO THE RELIEF VALVE LIFTING BELOW THE SET POINT. THE REPLACEMENT PILOT HAS BEEN OPERATING AS INTENDED FROM TIME OF INSTALLATION WITH NO ISSUES.\n\nPHMSA trend classification: not significant, not serious.\n\nPHMSA standardized cause: EQUIPMENT FAILURE — MALFUNCTION OF CONTROL/RELIEF EQUIPMENT.\n\nPHMSA indexed costs: $11,600 reported total cost, $10,738.002 in 1984 dollars, $13,546.802 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":2212}