PANTHER OPERATING COMPANY, LLC

Incident Narrative

ON 2/25/24 AT APPROXIMATELY 0700 OPERATIONS PERSONNEL ARRIVED ON PANTHER OPERATING COMPANY (POC) MPOG MP 69 PLATFORM TO START THEIR LOCK OUT/TAG OUT (LOTO) WALKDOWN FOR AN UPCOMING PROJECT. THE PIPELINE AND STATION HAVE BEEN SHUT DOWN SINCE THE 11/16/23 ACCIDENT. AT 0800 THE PERSONNEL STARTED THEIR WALKDOWN OF THE FACILITY AND PIPING. AT APPROXIMATELY 0830 AN OPERATOR TURNED A PSV VALVE THINKING HE WAS CLOSING IT BUT OPENED THE PSV VALVE. THE PSV MANIFOLD TUBING LEAKED RESIDUAL CRUDE, BREAKING ITS FIRST CONTAINMENT, AND FLOWED ONTO THE CONCRETE FACILITY DECK. THE CRUDE MOVED TOWARDS THE DRAINAGE OF THE FACILITY DRAIN. THE CRUDE DIDN'T MAKE TO THE DRAIN AND STARTED TO PASS THROUGH THE CRACKS OF THE CONCRETE FACILITY, DOWN THE FACILITY CONCRETE PYLON INTO THE MARSH WATER. THIS PART OF THE FACILITY STRUCTURE (CONCRETE) AND SUMP MAINTENANCE RESPONSIBILITY BELONGS TO ANOTHER OPERATOR. ONLY, THE PIPING IS MAINTAINED BY POC. APPROXIMATELY LESS THAN A GALLON OF CRUDE WAS RELEASE FROM THE OPEN VALVE AND REACHED THE WATER. A CALL WAS PLACED TO THE NRC ON 2/25/24 @ 0930 (NRC# 1392340). ES&H WAS SENT TO THE PLATFORM LOCATION AND ARRIVED ONSITE AT 1130 ON 2/25/24; TO CLEAN UP THE <1 GALLON THAT ENDED UP IN THE MARSH AREA UNDER THE FACILITY. ABSORBENT PADS AND MATERIAL WERE PLACED AROUND AND UNDER THE PLATFORM TO RECOVER ALL THE OIL. ON TUESDAY 2/27/24 THE CLEAN-UP WAS COMPLETE. A 48HR PHMSA UPDATE CALL TO THE NRC WAS PLACED ON 2/27/24 AT 0930 (NRC # 1392464). THE OPERATOR'S OQ'S WERE SUSPENDED UNTIL RETRAINING WAS COMPLETE, AND HE WAS RETRAINED IN THE LOTO PROCEDURES TO PREVENT THIS FROM HAPPENING AGAIN.