{"operation":"document","citation":"P-76-039","title":"NTSB Safety Recommendation P-76-039","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1976-08-20","effective_on":"1976-08-20","summary":"INITIATE NECESSARY EQUIPMENT CHANGES TO PROVIDE DATA NECESSARY FOR THE SAFE OPERATION OF THE PIPELINE CONTINUOUSLY TO THE DISPATCH CENTERS.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-76-039.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-76-039.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-76-039","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-76-039","body":"NTSB safety recommendation P-76-039.\n\nINITIATE NECESSARY EQUIPMENT CHANGES TO PROVIDE DATA NECESSARY FOR THE SAFE OPERATION OF THE PIPELINE CONTINUOUSLY TO THE DISPATCH CENTERS.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1976-08-20\n\nAdopted Date: 1976-06-30\n\nOverall Date Closed: 1983-02-14\n\nSynopsis: ON MAY 12, 1975, AN 8-INCH PIPELINE, WHICH WAS CLOSED IN UNDER PRESSURE AND WHICH WAS OWNED BY DOW CHEMICAL USA AND OPERATED AS THE BRONCO PIPE LINE COMPANY, RUPTURED NEAR DEVERS, TEXAS. NATURAL GAS LIQUIDS AT 1,425 PSIG PRESSURE ERRUPTED FROM A FRACTURE NEAR THE TOP OF THE PIPE. THE LIQUIDS VAPORIZED MIXED WITH AIR, AND FORMED A CLOUD WHICH DRIFTED TO THE SOUTHWEST OVER U.S. HIGHWAY 90. AN AUTOMOBILE ENTERED THE VAPOR CLOUD AND IGNITED THE ETHANE-PROPANE VAPORS. THE RESULTING EXPLOSION AND FIRE KILLED THE FOUR PERSONS IN THE AUTOMOBILE, MELTED TELEPHONE AND ELECTRIC POWER LINES, WARPED RAILROAD TRACKS, BURNED AND SCORCHED ADJACENT WOODLANDS, AND INTERRUPTED RAIL AND HIGHWAY TRAFFIC.\n\nNtsbnumber: PLD75XR001\n\nReport Number: PAR-76-05\n\nAddressee Name: Dow Chemical Company\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1983-02-14\n\nAddressee Acronym: TDCC\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1982-12-01\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: DOW CHEMICAL U.S.A. LETTER: TELEMETERING EQUIPMENT WAS INSTALLED IN JUNE OF 1975 AS INDICATED BY LETTER DATED JUNE 20, 1975, TO YOUR MR. HANK SHEPHERD. IN 1979, THE TELEMETERING WAS REPLACED WITH A NETWORK SUPERVISORY CONTROL AND DATA ACQUISITION SYSTEM (SCADA). THIS SCADA SYSTEM PROVIDES OPERATIONAL CONTROL AND DATA TO OUR CONTINUOUSLY MANNED DISPATCH CENTER IN HOUSTON.\n\nAddressee Acronym: TDCC\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1982-10-08\n\nCommunication Type: Official Correspondence\n\nAddressee Acronym: TDCC\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1983-02-14\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":2052}