{"operation":"document","citation":"P-85-014","title":"NTSB Safety Recommendation P-85-014","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1985-07-01","effective_on":"1985-07-01","summary":"THE NTSB RECOMMENDS THAT THE SOUTHWEST GAS CORPORATION, AS SUCCESSOR TO THE ARIZONA PUBLIC SERVICE COMPANY: ESTABLISH FAILURE ANALYSIS PROCEDURES IN CONJUNCTION WITH COMPUTERIZING ITS LEAK REPORT SYSTEM, TO MORE RAPIDLY DETECT AND CORRECT GAS DISTRIBUTION PIPING PROBLEMS.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-014.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-014.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-014","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-85-014","body":"NTSB safety recommendation P-85-014.\n\nTHE NTSB RECOMMENDS THAT THE SOUTHWEST GAS CORPORATION, AS SUCCESSOR TO THE ARIZONA PUBLIC SERVICE COMPANY: ESTABLISH FAILURE ANALYSIS PROCEDURES IN CONJUNCTION WITH COMPUTERIZING ITS LEAK REPORT SYSTEM, TO MORE RAPIDLY DETECT AND CORRECT GAS DISTRIBUTION PIPING PROBLEMS.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1985-07-01\n\nAdopted Date: 1985-06-12\n\nOverall Date Closed: 1989-05-12\n\nSynopsis: AT 3:30 A.M. ON SEPTEMBER 25, 1984, AN EXPLOSION FOLLOWED BY AN INTENSE NATURAL GASFED FIRE DESTROYED TWO APARTMENTS AT 3022 NORTH 37TH STREET IN PHOENIX, ARIZONA. OF THE 12 PERSONS INJURED IN THE FIRE, 5 PERSONS LATER DIED. AFTER THE FIRE WAS EXTINGUISHED, THE 1 1/4-INCH-DIAMETER PLASTIC GAS MAIN SUPPLYING GAS TO THE DESTROYED APARTMENTS WAS EXCAVATED AND A 3-INCH-LONG LONGITUDINAL SPLIT WAS DISCOVERED IN THE BOTTOM OF THE PIPE 18 FEET FROM THE GAS METERS ON THE APARTMENT BUILDING. GAS AT 30 PSIG HAD ESCAPED THROUGH THE LONGITUDINAL SPLIT, MIGRATED INTO AND UNDER THE APARTMENTS, IGNITED, EXPLODED, AND BURNED.\n\nNtsbnumber: DCA84AP026\n\nReport Number: PAR-85-01\n\nAddressee Name: Southwest Gas Company\n\nAddressee Status: Closed - Acceptable Action\n\nAddressee Date Closed: 1989-05-12\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1989-01-16\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: 1984 WE BEGAN DEVELOPING A COMPUTERIZED LEAK REPORTING SYSTEM THAT IS USED TO ANALYZE, IDENTIFY AND RETRIEVE DATA TO IDENTIFY POTENTIAL MATERIAL PROBLEMS. THE SYSTEM BECAME FUNCTIONAL IN EARLY 1985 AND COVERS THE COMPLETE DISTRIBUTION SYSTEM REGARDLESS OF MATERIAL. P-85-14 THE LEAK REPORTING SYSTEM OUTLINED IN RECOMMENDATION P-85-13 ALSO CONTAINS THE COMPLETE INFORMATION ON THE LEAK, THE SYSTEM MATERIAL AND SYSTEM REPAIRS WHICH PROVIDES THE DATA BASE TO DO THE COMPLETE FAILURE ANALYSIS PROCEDURE IN THE ABS ALONG WITH THE BALANCE OF THE DISTRIBUTION SYSTEM.\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1989-05-12\n\nCommunication Type: Official Correspondence\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1988-10-21\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":2223}