{"operation":"document","citation":"P-85-004","title":"NTSB Safety Recommendation P-85-004","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1985-04-19","effective_on":"1985-04-19","summary":"THE NTSB RECOMMENDS THAT THE WASHINGTON GAS LIGHT COMPANY: REQUIRE THAT TEMPORARY BONDING CABLES INSTALLED TO MAINTAIN ELECTRICAL CONTINUITY DURING PIPE CUTTING OPERATIONS BE TESTED FOR CONDUCTIVITY BEFORE THE PIPELINE IS CUT.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-004.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-004.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-85-004","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-85-004","body":"NTSB safety recommendation P-85-004.\n\nTHE NTSB RECOMMENDS THAT THE WASHINGTON GAS LIGHT COMPANY: REQUIRE THAT TEMPORARY BONDING CABLES INSTALLED TO MAINTAIN ELECTRICAL CONTINUITY DURING PIPE CUTTING OPERATIONS BE TESTED FOR CONDUCTIVITY BEFORE THE PIPELINE IS CUT.\n\nPriority: CLASS II\n\nOverall Status: Closed - Acceptable Alternate Action\n\nIssued Date: 1985-04-19\n\nAdopted Date: 1985-03-08\n\nOverall Date Closed: 1985-08-19\n\nSynopsis: ON JUNE 19, 1984, SIX EMPLOYEES OF A CONTRACTOR WORKING FOR WASHINGTON GAS LIGHT COMPANY (WGL) IN ROCKVILLE, MARYLAND, WERE USING MECHANICAL SAWS TO CUT A SECTION OF 22-INCH DIAMETER, COATED AND CATHODICALLY PROTECTED, STEEL PIPELINE WHEN RESIDUAL GAS AT ATMOSPHERIC PRESSURE IN THE ISOLATED SECTION OF THE PIPELINE WAS IGNITED. A FLASHFIRE ENSUED, AND FOUR CONTRACTOR EMPLOYEES WHO WERE OPERATING THE SAWS AND A WGL SUPERINTENDENT WERE BURNED.\n\nProbable Cause: None\n\nNtsbnumber: DCA84FP021\n\nReport Number: None\n\nAddressee Name: Washington Gas\n\nAddressee Status: Closed - Acceptable Alternate Action\n\nAddressee Date Closed: 1985-08-19\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1985-05-07\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: WGLC LTR: A DAILY AND MONTHLY INSPECTION OF BONDING CABLES IS REQUIRED. THE DAILY INSPECTION IS MADE IMMEDIATELY PRIOR TO USAGE TO ASSURE THAT BONDING SURFACES ARE CLEAN AND NO DAMAGE HAS OCCURRED TO THE CABLE. THE MONTHLY INSPECTION IS PERFORMED BY TECHNICIANS MEASURING VOLTAGE AND RESISTANCE TO ASSURE NO LOSS OF CONDUCTIVITY. ANY LOSS IN CONDUCTIVITY WILL RESULT IN REPLACEMENT OR RECONDITIONING OF THE BONDING CABLE.\n\nAddressee Organization Type: P-Private Industry\n\nCommunication Date: 1985-08-19\n\nCommunication Type: Official Correspondence","truncated":false,"body_characters":1767}