ATMOS ENERGY CORPORATION - MID-TEX

Incident Narrative

ADDITIONAL NRC REPORT NUMBER 1192503 ON THE AFTERNOON OF OCTOBER 3, 2017, ATMOS ENERGY WAS NOTIFIED OF AN EVENT IN THE AREA OF 601 S. RIVERFRONT BLVD. IN DALLAS. A THIRD PARTY CONTRACTOR PERFORMING GRADING WORK ALONG A LEVEE DAMAGED A 16-INCH STEEL DISTRIBUTION MAIN OWNED BY ATMOS ENERGY. ATMOS ENERGY PERFORMED EMERGENCY ACTIONS NEEDED TO ELIMINATE GAS FLOW BY ISOLATING THE DAMAGED SECTION OF PIPE. BY UTILIZING ENGINEERING CONTROLS, THE FLOW OF GAS WAS ELIMINATED AT 11:54 PM ON OCTOBER 4, 2017. THE DAMAGED SECTION OF 16-INCH MAIN WAS REPLACED AND GAS FLOW REINSTATED ON THE EVENING OF OCTOBER 6, 2017. THE REPORT OF THIS INCIDENT WAS ORIGINALLY MADE DUE TO THE EXPECTATION THAT THE GAS LOSS WOULD EXCEED THE REPORTING CRITERIA. UPON FURTHER INVESTIGATION, IT WAS DETERMINED THAT ONLY THE REPAIR COST WOULD QUALIFY THIS AS A REPORTABLE INCIDENT. THE FINAL GAS LOSS CALCULATION DID NOT EXCEED THE REPORTING CRITERIA. THE ONE-CALL TICKET NUMBER IS 1776364804. THE INVESTIGATION INDICATES THAT THE CONTRACTOR WAS WORKING OUTSIDE THE SCOPE OF THE TICKET. THE LOCAL TIME AND DATE OF THE INCIDENT (PART A, ITEM 4.) AS ORIGINALLY SUBMITTED WAS THE TIME THAT ATMOS ENERGY DETERMINED THAT THE INCIDENT REPORTING CRITERIA HAD BEEN MET, AS PER THE PHMSA INSTRUCTIONS FOR FORM 7100.1. AT PHMSA'S REQUEST, WE HAVE CHANGED PART A, ITEM 4. TO REFLECT THE TIME THAT THE LINE WAS DAMAGED.