{"operation":"document","citation":"P-73-040","title":"NTSB Safety Recommendation P-73-040","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1973-08-24","effective_on":"1973-08-24","summary":"THE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: GIVE ADDITIONAL REGULATORY CONSIDERATION TO THE EFFECTS OF GRAPHITIZATION ON THE RESISTANCE OF CAST-IRON MAINS TO EXTERNAL LOADS. LOCALIZED AND GENERAL GRAPHITIZATION SHOULD BE DEFINED.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-040.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-040.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-73-040","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-73-040","body":"NTSB safety recommendation P-73-040.\n\nTHE NTSB RECOMMENDS THAT THE OFFICE OF PIPELINE SAFETY OF THE DEPARTMENT OF TRANSPORTATION: GIVE ADDITIONAL REGULATORY CONSIDERATION TO THE EFFECTS OF GRAPHITIZATION ON THE RESISTANCE OF CAST-IRON MAINS TO EXTERNAL LOADS. LOCALIZED AND GENERAL GRAPHITIZATION SHOULD BE DEFINED.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1973-08-24\n\nAdopted Date: 1973-08-16\n\nOverall Date Closed: 1976-07-20\n\nSynopsis: A GAS EXPLOSION OCCURRED ON AUGUST 31, 1972 IN THE ANNEX BUILDING OF AN ATLANTA, GA., HIGH SCHOOL. GAS HAD LEAKED INTO THE BUILDING FROM A CRACKED CAST-IRON MAIN LOCATED BENEATH THE STREET IN FRONT OF THE ANNEX. ATLANTA GAS LIGHT COMPANY (AGL) PERSONNEL ARRIVED AT THE LEAK SITE APPROXIMATELY 1 HOUR AFTER AGL WAS FIRST NOTIFIED OF THE LEAK AND APPROXIMATELY 1/2 HOUR BEFORE THE EXPLOSION. ONE PERSON DIED AND SEVEN OTHERS WERE INJURED AS A RESULT OF THE ACCIDENT.\n\nNtsbnumber: PLD72XR005\n\nReport Number: PAR-73-03\n\nAddressee Name: RSPA\n\nAddressee Status: Closed - Acceptable Action\n\nAddressee Date Closed: 1976-07-20","truncated":false,"body_characters":1092}