{"operation":"document","citation":"P-73-036","title":"NTSB Safety Recommendation P-73-036","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1973-08-10","effective_on":"1973-08-10","summary":"THE NTSB RECOMMENDS THAT THE EXXON PIPE LINE COMPANY: NOT OPERATE OR CLOSE IN THE COMYN TO SATSUMA SYSTEM FROM HEARNE TO SATSUMA AT A PRESSURE GREATER THAN 400 P.S.I.G., UNTIL AT LEAST THIS SECTION OF LINE HAS BEEN HYDROSTATICALLY TESTED SUCCESSFULLY AND FOUND TO BE SAFE FOR HIGHER OPERATING PRESSURES.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-036.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-036.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-036","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-73-036","body":"NTSB safety recommendation P-73-036.\n\nTHE NTSB RECOMMENDS THAT THE EXXON PIPE LINE COMPANY: NOT OPERATE OR CLOSE IN THE COMYN TO SATSUMA SYSTEM FROM HEARNE TO SATSUMA AT A PRESSURE GREATER THAN 400 P.S.I.G., UNTIL AT LEAST THIS SECTION OF LINE HAS BEEN HYDROSTATICALLY TESTED SUCCESSFULLY AND FOUND TO BE SAFE FOR HIGHER OPERATING PRESSURES.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1973-08-10\n\nAdopted Date: 1973-08-01\n\nOverall Date Closed: 1976-07-20\n\nSynopsis: ON MAY 14, 1972, A SHUTDOWN, CLOSED-IN 8-INCH PIPELINE OWNED BY THE EXXON PIPE LINE COMPANY RUPTURED NEAR HEARNE, TEXAS. THE CRUDE OIL FLOWED ALONG A SMALL STREAM AND WAS DAMMED UP 1 FOOT DEEP IN A STOCK POND 1,800 FEET FROM THE LEAK. VAPORS FROM THE CRUDE OIL, WHICH CONTINUED TO LEAK FROM THE RUPTURE, ENTERED A HOUSE AND WERE IGNITED. THE EXPLOSION KILLED ONE PERSON, SERIOUSLY BURNED TWO OTHERS, DESTROYED THE HOUSE, MELTED NEARBY COMMUNICATION LINES, AND SCORCHED AN 1,800-FOOT-LONG AREA.\n\nNtsbnumber: PLD72XR003\n\nReport Number: PAR-73-02\n\nAddressee Name: ExxonMobil Corporation\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1976-07-20\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1973-12-20\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: LETTER FROM EXXON PIPE LINE COMPANY: THE SPECIFIC PIPELINE SECTION THAT EXPERIENCED THE FAILURE, NO. 6-8 INCH BETWEEN HEARNE AND CLAY GATE PLANT HAS BEEN REPAIRED AT THE POINT OF FAILURE, INSPECTED BY A LINALOG SURVEY, FILLED WITH DRY NITROGEN AND REMOVED FROM SERVICE. AT PRESENT WE HAVE NO PLANS TO RETURN THE LINE TO SERVICE.","truncated":false,"body_characters":1647}