ENERGY TRANSFER COMPANY

Incident Narrative

ON JULY 15, 2024, A RUPTURE OCCURRED ON ENERGY TRANSFER COMPANYS K TO COYA 24-INCH PIPELINE LOCATED APPROXIMATELY 15 MILES SOUTHWEST OF MONAHANS, TX. AT 3:30 A.M. SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA) SYSTEM ALERTED THE COYANOSA GAS PLANT OPERATOR OF A LOSS OF PRESSURE. AT 4:40 A.M. THE PIPELINE OPERATOR ARRIVED ON LOCATION TO FIND LOCAL FIRST RESPONDERS WERE ALREADY ON SCENE BATTLING A FIRE. THE EMERGENCY PERSONNEL HAD BEEN NOTIFIED OF THE FIRE BY A THIRD PARTY. AT 5:20 A.M. THE AFFECTED PIPELINE WAS ISOLATED, AND THE FIRE HAD BURNED OUT, ENERGY TRANSFER PERSONNEL WERE ABLE TO CONFIRM THE DISCOVERY OF A RUPTURE ON THE K TO COYA 24. IT WAS DETERMINED THE REPAIRS AND DAMAGES WOULD EXCEED THE $145,400.00 REPORTABLE DOLLAR CRITERIA AND THE NRC AND THE TXRRC WERE NOTIFIED. THE LOCAL FIRE DEPARTMENT ALLOWED THE FIRE TO BURN ITSELF OUT. THE CAUSE OF THE RUPTURE IS STILL UNDER INVESTIGATION. THE CAUSE OF THE RUPTURE WAS IDENTIFIED AS EXTERNAL CORROSION OCCURRING ALONG THE 3:00 OCLOCK SIDE OF THE PIPE. THE THINNEST MEASURED REMAINING WALL THICKNESS WAS DETERMINED TO BE 0.020-INCH (7% OF THE NOMINAL WALL THICKNESS). OTHER AREAS OF CORROSION PRESENT ON THE PIPE MATERIAL PROVIDED APPEARED CONSISTENT WITH DC INTERFERENCE CURRENT CORROSION AND UNDER DEPOSIT CORROSION. PLAN TO PREVENT RECURRENCE, OPERATIONS WILL INSTALL MORE CP TEST STATIONS TO HELP LOCATE EXTERNAL CORROSION TROUBLE AREAS AND INSTALL MORE RECTIFIERS TO IMPRESS CURRENT EQUALLY OVER THE ENTIRETY OF THE PIPELINE. OPERATIONS WILL ALSO UTILIZE CORROSION COUPONS AND CHEMICAL INJECTION TO MONITOR AND MITIGATE ANY INTERNAL CORROSION.