{"operation":"document","citation":"P-78-052","title":"NTSB Safety Recommendation P-78-052","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1978-08-21","effective_on":"1978-08-21","summary":"ADVISE ITS MEMBER COMPANIES OF THE CIRCUMSTANCES OF THIS ACCIDENT AND URGE THEM TO KEEP ACCURATE RECORDS OF FACILITIES AND TO INSTRUCT CONSTRUCTION AND MAINTENANCE CREWS IN THE IMPORTANCE OF VERIFYING THESE FACILITIES BEFORE WORKING ON THEM.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-052.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-052.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-78-052","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-78-052","body":"NTSB safety recommendation P-78-052.\n\nADVISE ITS MEMBER COMPANIES OF THE CIRCUMSTANCES OF THIS ACCIDENT AND URGE THEM TO KEEP ACCURATE RECORDS OF FACILITIES AND TO INSTRUCT CONSTRUCTION AND MAINTENANCE CREWS IN THE IMPORTANCE OF VERIFYING THESE FACILITIES BEFORE WORKING ON THEM.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1978-08-21\n\nAdopted Date: 1978-08-08\n\nOverall Date Closed: 1980-02-14\n\nSynopsis: ON MAY 17, 1978, A COLUMBIA GAS OF OHIO, INC., CONSTRUCTION CREW, MISTAKING AN 8-INCH, LOW-PRESSURE STEEL GAS MAIN FOR AN 8-INCH, HIGH-PRESSURE STEEL GAS MAIN, DRILLED A SMALL PILOT BIT HOLE THROUGH THE WALL OF THE LOW-PRESSURE GAS MAIN AND BEGAN TO CUT INTO THE PIPE WALL WITH A LARGE DIAMETER BIT. GAS FROM THE HIGH PRESSURE GAS SYSTEM ENTERED THE 14-INCH WATER COLUMN LOW-PRESSURE GAS MAIN AND RAPIDLY INCREASED THE PRESSURE IN THE LOW-PRESSURE SYSTEM IN A 4.8-SQUARE-MILE AREA OF MANSFIELD. THE MANSFIELD FIRE DEPARTMENT BEGAN RECEIVING REPORTS OF FIRES CAUSED BY EXCESSIVELY HIGH APPLIANCE FLAMES ON GAS APPLIANCES. THERE WERE NO FATALITIES OR INJURIES REQUIRING HOSPITALIZATION. PROPERTY DAMAGE TO 16 HOUSES RESULTED FROM THE IGNITION OF NEARBY HIGH PILOT FLAMES; 5 OF THESE HOUSES WERE EXTENSIVELY DAMAGED.\n\nNtsbnumber: DCA78FP019\n\nReport Number: None\n\nAddressee Name: American Gas Association\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1980-02-14\n\nAddressee Acronym: AGA\n\nAddressee Organization Type: A-Associations\n\nCommunication Date: 1979-11-16\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: 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: 1980-02-14\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":1841}