{"operation":"document","citation":"P-74-048","title":"NTSB Safety Recommendation P-74-048","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1974-10-24","effective_on":"1974-10-24","summary":"THE NTSB RECOMMENDS THAT THE WASHINGTON GAS LIGHT COMPANY: CONTINUE ITS EFFORTS AT THE ACCIDENT SITE TO DISSIPATE THE RESIDUAL GAS REMAINING IN THE GROUND.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-74-048.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-74-048.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-74-048","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-74-048","body":"NTSB safety recommendation P-74-048.\n\nTHE NTSB RECOMMENDS THAT THE WASHINGTON GAS LIGHT COMPANY: CONTINUE ITS EFFORTS AT THE ACCIDENT SITE TO DISSIPATE THE RESIDUAL GAS REMAINING IN THE GROUND.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Action\n\nIssued Date: 1974-10-24\n\nAdopted Date: 1974-10-24\n\nOverall Date Closed: 1976-09-10\n\nSynopsis: ON JUNE 23, 1973, A SERIES OF EXPLOSIONS, FOLLOWED BY FIRE, OCCURRED AT 12321 WELLING LANE IN BOWIE, MARYLAND. THREE OCCUPANTS OF THE HOUSE WERE KILLED, AND A FOURTH WAS INJURED; THE HOUSE WAS BADLY DAMAGED. HOUSES IN A FIVE-BLOCK AREA WERE EVACUATED.\n\nNtsbnumber: PLD73XR006\n\nReport Number: PAR-74-05\n\nAddressee Name: Washington Gas\n\nAddressee Status: Closed--No Longer Applicable\n\nAddressee Date Closed: 1976-09-10\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1975-01-03\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: WASHINGTON GAS LIGHT COMPANY LTR: THEY HAVE COMPLIED WITH THE RECOMMENDATION. THE NUMBER OF VENT HOLES WERE INCREASED IN THE RESIDUAL GAS AREA TO PERMIT THE TRAPPED GAS TO ESCAPE. ALSO A NUMBER OF HIGH-SUCTION-TYPE BLOWERS WERE INSTALLED OVER A NUMBER OF VENT HOLES TO ACCELERATE THE REMOVAL OF THE RESIDUAL GAS.","truncated":false,"body_characters":1233}