{"operation":"document","citation":"P-78-034","title":"NTSB Safety Recommendation P-78-034","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1978-07-19","effective_on":"1978-07-19","summary":"CONDUCT TESTS TO DETERMINE THE EFFECT OF TIME ON THE PULLOUT RESISTANCE OF STANDARD COMPRESSION COUPLINGS AND POLYETHYLENE PLASTIC PIPE.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-034.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-034.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-034","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-78-034","body":"NTSB safety recommendation P-78-034.\n\nCONDUCT TESTS TO DETERMINE THE EFFECT OF TIME ON THE PULLOUT RESISTANCE OF STANDARD COMPRESSION COUPLINGS AND POLYETHYLENE PLASTIC PIPE.\n\nPriority: CLASS III\n\nOverall Status: Closed--No Longer Applicable\n\nIssued Date: 1978-07-19\n\nAdopted Date: 1978-07-05\n\nOverall Date Closed: 1987-01-12\n\nSynopsis: ON DECEMBER 15, 1977, A 2-INCH PLASTIC GAS MAIN UNDER AN ALLEY IN DOWNTOWN LAWRENCE, KANSAS, PULLED OUT OF A COMPRESSION COUPLING WHICH JOINED IT TO A STEEL GAS MAIN. NATURAL GAS ESCAPED FROM THE MAIN AND MIGRATED THROUGH THE STONE FOUNDATION WALLS OF TWO NEARBY BUILDINGS. THE ACCUMULATIONS OF GAS IN THE TWO BUILDINGS IGNITED. THE RESULTING EXPLOSION AND FIRE DESTROYED ONE BUILDING, SEVERELY DAMAGED THE OTHER BUILDING, AND BROKE NEARBY WINDOWS. TWO PERSONS WERE KILLED AND THREE PERSONS WERE INJURED.\n\nNtsbnumber: DCA78MP005\n\nReport Number: PAR-78-04\n\nAddressee Name: American Gas Association\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1987-01-12\n\nAddressee Acronym: AGA\n\nAddressee Organization Type: A-Associations\n\nCommunication Date: 1978-08-24\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: LTR FROM AMERICAN GAS ASSOCIATION: AT ITS NEXT MEETING, THE GAS RESEARCH INSTITUTE PLASTIC PIPE RESEARCH GROUP WILL CONSIDER RESEARCH ON THE FOUR RECOMMENDATIONS IN THE 1979 RESEARCH PROGRAM. THE GRI HAS AN ONGOING PLASTIC PIPE RESEARCH PROGRAM AT BATTELLE COLUMBUS LABORATORIES. THESE STUDIES INCLUDE AGING AND STRESS EFFECTS. FIELD EXPERIENCE AND LABORATORY TESTS SHOWED THAT FAILURES CAN BE EXPECTED AT JOINTS DUE TO STRESS CONCENTRATION. INCREASED FOCUS ON PLASTIC JOINTS WILL BE A MAIN AGENDA ITEM AT THE NEXT GRI PLASTIC PIPE RESEARCH GROUP MEETING. 3/23/79 - AGA LTR: THE FOLLOWING RESEARCH TOPICS ARE BEING OR WILL BE ADDRESSED BY AGA AND THE GAS RESEARCH INSTITUTE: (1) ANALYSIS OF FIELD EXPERIENCE WITH POLYETHYLENE PIPE. (2) JOINT DESIGN AND FIELD INSTALLATION TECHNOLOGY. (3) REQUIREMENTS FOR NEW PLASTICS FOR GAS DISTRIBUTION. 11/16/79 - AGA LTR: SAFETY RECOMMENDATION BEING ADDRESSED IN GAS RESEARCH INSTITUTE RESEARCH PROGRAM.\n\nAddressee Acronym: AGA\n\nAddressee Organization Type: A-Associations\n\nCommunication Date: 1987-01-12\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: THIS IS ACTUALLY A FOLLOWUP AND THE FOLLOWING IS A HISTORY OF PAST CORRESPONDENCE. AGA'S AUGUST 24, 1978, & MAR. 23, 1979, LETTERS AND NTSB'S APRIL 16, 1979, LETTER .\n\nAddressee Acronym: AGA\n\nAddressee Organization Type: A-Associations\n\nCommunication Date: 1980-02-14\n\nCommunication Type: Official Correspondence\n\nAddressee Acronym: AGA\n\nAddressee Organization Type: A-Associations\n\nCommunication Date: 1987-01-12\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":2759}