{"operation":"document","citation":"P-75-002","title":"NTSB Safety Recommendation P-75-002","source_type":"guidance","agency":"National Transportation Safety Board","status":"guidance","official":true,"published_on":"1975-04-02","effective_on":"1975-04-02","summary":"REQUIRE THE MICHIGAN-WISCONSIN PIPE LINE COMPANY TO: RECALIBRATE THE PRESSURE-DROP SETTINGS ON THEIR EXISTING AUTOMATIC VALVES TO BETTER INSURE THEIR ACTUATION ON PRESSURE DROPS CAUSED BY LINE FAILURE, AS REQUIRED UNDER 49 CFR 192.745, VALVE MAINTENANCE: TRANSMISSION LINES.","machine_formats":{"json":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-75-002.json","markdown":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-75-002.md"},"app_url":"https://regulus.evalyn.ai/document/ntsb-recommendation-p-75-002","source_url":"https://data.ntsb.gov/carol-main-public/sr-details/P-75-002","body":"NTSB safety recommendation P-75-002.\n\nREQUIRE THE MICHIGAN-WISCONSIN PIPE LINE COMPANY TO: RECALIBRATE THE PRESSURE-DROP SETTINGS ON THEIR EXISTING AUTOMATIC VALVES TO BETTER INSURE THEIR ACTUATION ON PRESSURE DROPS CAUSED BY LINE FAILURE, AS REQUIRED UNDER 49 CFR 192.745, VALVE MAINTENANCE: TRANSMISSION LINES.\n\nPriority: CLASS II\n\nOverall Status: Closed - Reconsidered\n\nIssued Date: 1975-04-02\n\nAdopted Date: 1975-04-02\n\nOverall Date Closed: 1979-02-02\n\nSynopsis: ON MARCH 2, 1974, A NATURAL GAS PIPELINE ACCIDENT OCCURRED NEAR MONROE, LOUISIANA. 30-INCH PIPELINE FAILED AT A GIRTH WELD INSIDE A CASING UNDER A HIGHWAY. A RESULTING FIRE BURNED 10 ACRES OF FOREST, BUT NO DEATHS OR INJURIES RESULTED.\n\nNtsbnumber: PLD74XR004\n\nReport Number: PAR-75-01\n\nAddressee Name: RSPA\n\nAddressee Status: Closed - Reconsidered\n\nAddressee Date Closed: 1979-02-02\n\nAddressee Acronym: RSPA\n\nAddressee Organization Type: G-Federal Government\n\nCommunication Date: 1975-09-03\n\nCommunication Type: Official Correspondence\n\nCommunication Contents: 49 CFR 192.745 REQUIRES VALVES THAT MIGHT BE REQUIRED DURING AN EMERGENCY TO BE INSPECTED AND PARTIALLY OPERATED AT INTERVALS NOT TO EXCEED 1 YEAR. THE VALVE THAT FAILED AUTOMATICALLY DID PERFORM MANUALLY. THE REGULATION APPLIES TO THE ABILITY OF THE VALVE TO CONTROL GAS FLOW AND IS NOT RELATED TO THE MANNER IN WHICH IT IS OPERATED. PART 192 DOES NOT REQUIRE AUTOMATIC VALVE OPERATION.","truncated":false,"body_characters":1416}