{"operation":"document","citation":"PHMSA Report 20100015","title":"WILLIAMS GAS PIPELINE - TRANSCO — Gas transmission and gathering — incident on 2010-02-10","source_type":"incident","agency":"Pipeline and Hazardous Materials Safety Administration","status":"historical","official":true,"published_on":"2010-04-13","effective_on":"2010-02-10","summary":"Gas transmission and gathering incident in JOHNSON BAYOU, CAMERON County, LA. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 18 NATURAL GAS released, $5,000 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-75d5be0ab431e2acf25478cd.json","markdown":"https://regulus.evalyn.ai/document/phmsa-incident-75d5be0ab431e2acf25478cd.md"},"app_url":"https://regulus.evalyn.ai/document/phmsa-incident-75d5be0ab431e2acf25478cd","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 JOHNSON BAYOU, CAMERON County, LA. Reported cause: EQUIPMENT FAILURE. Reported consequences: 0 fatalities, 0 injuries, 18 NATURAL GAS released, $5,000 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: 20100015.\n\nOperator ID: 19570.\n\nReported incident date: 2/10/2010 3:58.\n\nCause detail: THREADED CONNECTION/COUPLING FAILURE\n\nCause detail: 6\" STRINER LID (YALE CAP CLOSURE) FAILED ALLOWING CONDENSATE AND GAS TO ESCAPE TO THE ATMOSPHERE. OPERATOR ON DUTY ISOLATED STRAINER POT WITH VALVING UPSTREAM AND DOWNSTREAM. GAS LOSS WITH CONDENSATE/SALTWATER WAS RELEASED. METALURGICAL REPORT REVEALED THE FOLLOWING FINDINGS: SEVERAL CIRCUMSTANCES WORKED IN COMBINATION TO ALLOW THE CAP TO FAIL AND COME OFF OF THE BARREL. THERE WAS A LOSS OF FIT-UP BETWEEN THE MATING THREADS ON THE CAP AND BARREL AS A RESULT OF CORROSION, WEAR, AND PRIOR MECHANICAL DAMAGE (POSSIBLE OVER-TIGHTENING AND/OR CROSSTHREADING). � THE CAP WAS TIGHTENED BY HAMMER BLOWS TO ITS DAMAGED EARS, WHICH RESULTED IN THE CAP BEING INSTALLED OFF-CENTER RELATIVE TO THE BARREL. � THE NUMBER OF THREADS CAPABLE OF CARING LOADS WAS REDUCED BY PRIOR DAMAGE TO NO MORE THAN TWO. � THE THREADS ON ONE SIDE OF THE CONNECTION WERE FULLY ENGAGED AND THE TRHEADS ON THE OPPOSITE SIDE WERE ONLY SLIGHTLY ENGAGED. � THE THREADS LOCATED 90� RELATIVE TO THE ENGAGED THREADS WERE ONLY PARTIALLY ENGAGED; THESE WERE OVERLOADED AND SHEARED OFF AT THE TIME OF FAILURE.\n\nPHMSA trend classification: significant incident, not serious.\n\nPHMSA standardized cause: EQUIPMENT FAILURE — THREADED CONNECTION/COUPLING FAILURE.\n\nPHMSA indexed costs: $257,200 reported total cost, $140,932.951 in 1984 dollars, $345,338.11 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":2059}