{"operation":"document","citation":"P-81-006","title":"NTSB Safety Recommendation P-81-006","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1981-05-13","effective_on":"1981-05-13","summary":"THE NTSB RECOMMENDS THAT THE UNION LIGHT, HEAT AND POWER COMPANY: CONDUCT A SYSTEM-WIDE INSPECTION OF UNRESTRAINED COMPRESSION COUPLINGS ON GAS METER SET ASSEMBLIES FOR CONFORMANCE WITH THE MANUFACTURER'S INSTALLATION RECOMMENDATIONS AND ALL PERTINENT REGULATIONS.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-81-006.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-81-006.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-81-006","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-81-006","body":"NTSB safety recommendation P-81-006.\n\nTHE NTSB RECOMMENDS THAT THE UNION LIGHT, HEAT AND POWER COMPANY: CONDUCT A SYSTEM-WIDE INSPECTION OF UNRESTRAINED COMPRESSION COUPLINGS ON GAS METER SET ASSEMBLIES FOR CONFORMANCE WITH THE MANUFACTURER'S INSTALLATION RECOMMENDATIONS AND ALL PERTINENT REGULATIONS.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1981-05-13\n\nAdopted Date: 1981-04-28\n\nOverall Date Closed: 1983-02-02\n\nSynopsis: ON OCTOBER 9, 1980, A 2-INCH-DIAMETER COMPRESSION COUPLING LOCATED ON THE UPSTREAM SIDE OF A GAS METER SET ASSEMBLY IN THE BOILERROOM OF THE SIMON KENTON HIGH SCHOOL IN INDEPENDENCE, KENTUCKY, PULLED OUT OF ITS CONNECTION WITH A 2-INCH-DIAMETER GAS SERVICE LINE. NATURAL GAS AT 165-PSIG PRESSURE ESCAPED THROUGH THE 2-INCH-DIAMETER OPENING AND, SECONDS LATER, EXPLODED AND BURNED. A BASEMENT WALL WAS BLOWN DOWN, AN ADJACENT CLASSROOM WAS DAMAGED, AND ONE STUDENT WAS KILLED. ABOUT 30 MINUTES LATER, A SECOND EXPLOSION OCCURED, WHICH INJURED 37 PERSONS AND EXTENSIVELY DAMAGED THE SHCOOL. THE GAS SERVICE LINE WAS CONNECTED TO A 4-INCH-DIAMETER GAS MAIN OWNED BY THE UNION LIGHT, HEAT AND POWER COMPANY (GAS COMPANY), A SUBSIDIARY OF THE CINCINNATI GAS AND ELECTRIC COMPANY, WHICH WAS UPRATING THE GAS MAIN BY CONTROLLED PRESSURE INCREASES AT THE TIME OF THE ACCIDENT.\n\nNtsbnumber: DCA81AP001\n\nReport Number: PAR-81-01\n\nAddressee Name: Union Light, Heat and Power Company\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1983-02-02\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1982-10-25\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: UNION LIGHT, HEAT AND POWER COMPANY LTR: UNION LIGHT HAS CONDUCTED A FIELD SURVEY OF ALL CUSTOMERS, APPROXIMATELY 63,000, TO ASCERTAIN THAT NO UNRESTRAINED PRESSURE COUPLINGS REMAIN UP-STREAM OF CUSTOMER'S METERS. THE PROGRAM WAS STARTED MAY 11, 1981, AND THE SURVEY WAS COMPLETED SEPTEMBER 11, 1981. AS OF DECEMBER 4, 1981, UNION LIGHT HAD NOT BEEN ABLE TO GAIN ENTRANCE OF 698 LOCATIONS WHERE CUSTOMERS RECEIVE GAS SERVICE ABOVE STANDARD PRESSURE. ALL OF THESE LOCATIONS WERE VISITED ON AT LEAST THREE SEPARATE OCCASIONS. UNION LIGHT IS CONTINUING TO MAKE EVERY EFFORT TO GAIN ENTRANCE USING RECALLS, TELEPHONE CONTACT, DOOR HANGER NOTICES REQUESTING CUSTOMER TO CALL, AND THE U.S. MAIL. AS OF OCTOBER 20, 1982, ONLY 11 LOCATIONS REMAINED UNRESOLVED.\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1983-02-02\n\nCommunication Type: Official Correspondence\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1982-10-08\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":2672}