ENERGY TRANSFER COMPANY

Incident Narrative

ON 6/27/22 AT APPROXIMATELY 10:56, GAS CONTROL RECEIVED A REPORT FROM LANDOWNER OF FIRE AND POSSIBLE RUPTURE IN THE VICINITY OF ENERGY TRANSFER (ET) PIPELINE KNOWN AS 20104059 COMSTOCK EXTENSION 10-INCH. AT 11:07, SCADA INFORMATION INDICATED A LOSS OF PRESSURE AT THE METER CLOSE TO THE LEAK SITE. ENERGY TRANSFER OPERATIONS PERSONNEL WERE NOTIFIED AND ENROUTE TO THE VALVE DOWNSTREAM FROM THE POSSIBLE LEAK SITE. THE SHUT-IN VALVE AT THE PETRO-HUNT WELLSITE HAD ALREADY CLOSED ON LOW PRESSURE. ET PIPELINE TECHNICIAN CLOSED THE DOWNSTREAM VALVE TO ISOLATE THE LOCATION AT APPROXIMATELY 12:04. ET PERSONNEL ARRIVED AT THE RUPTURE SITE AT 13:10 AND CONFIRMED THE FIRE WAS EXTINGUISHED AT 13:17. THE PIPELINE SECTION WAS EXCAVATED AND INSPECTED AND THE INITIAL CAUSE WAS THOUGHT TO BE MATERIAL DEFECT IN THE PIPE BODY. METALLURGICAL ANALYSIS INDICATED INTERNAL ENVIRONMENTAL CRACKING AS THE CAUSE LIKELY DUE TO INTERACTION BETWEEN CORROSION INHIBITOR AND COMPONENTS OF THE GAS STREAM. THE PIPE SEGMENT AFFECTED BY THE RUPTURE WAS REPLACED. PIPELINE BACK IN SERVICE ON 7/3/2022 AT 0:30. LA STATE POLICE WAS NOTIFIED ON 6/27/2022 AT 11:19. AS A PRECAUTION, EMERGENCY RESPONDERS EVACUATED 35 PERSONS FROM APPROXIMATELY 6 RESIDENTIAL LOCATIONS. ONCE THE FIRE WAS EXTINGUISHED, THE EVACUATED PERSONS WERE ADVISED IT WAS SAFE TO RETURN TO THEIR RESIDENCES. NRC NOTIFICATION (1339910) WAS MADE AT 6/27/2022, 11:32 NRC 48-HOUR REPORT WAS MADE 6/28/2022, 15:38 (1340030). SINCE THE TIME OF THE FAILURE THE PIPELINE WAS SUBJECTED TO A HYDROSTATIC PRESSURE STRENGTH AND SPIKE TEST.