SEA ROBIN PIPELINE CO

Incident Narrative

AT APPROXIMATELY 10:25 AM ON 06/18/22, GAS CONTROL RECEIVED A CALL FROM A 3RD PART REPORTING BUBBLES IN THE AREA NEAR THE SEA ROBIN 716 PIPELINE IN SMI BLOCK 128A. THE INITIAL NRC NOTIFICATION (1339148) WAS CONDUCTED ON 6/18/22 AT 1:25 PM. SEA ROBIN DID NOT TAKE OWNERSHIP AT THIS TIME DUE TO THE UNCERTAINTY OF THE LEAK LOCATION BECAUSE OF THE INTERMITTENT NATURE OF THE RELEASE. THE 48-HOUR FOLLOW-UP NRC NOTIFICATION (1339250) WAS CONDUCTED ON 6/20/22 AT 10:42 AM. OVERFLIGHTS WERE CONDUCTED UNTIL WE WERE ABLE TO GET A MESOTECH AND SURVEY TECH ON A CREW BOAT TO BEGIN INVESTIGATION. THE SONAR EQUIPMENT DID DETECT A LEAK ON THE 24-INCH SEGMENT 15532 ON 6/22/22 AT APPROXIMATELY 10:30 AM. AN UPDATE WAS MADE TO THE NRC, (1339470) ON 6/22/22 AT 11:46 AM STATING THAT SEA ROBIN WAS TAKING OWNERSHIP OF THE LEAK. A DSV CREW WAS DISPATCHED TO THE LEAK SITE ON 6/24/22 AND ARRIVED ON 6/25/22. THE CONTRACTOR LOCATED THE LEAK COMING FROM A 1-INCH PLUG ON THE BODY OF THE 24-INCH SUBSEA BALL VALVE ON 6/27/22. DSV CREW COULD NOT MAKE REPAIRS ON THE VALVE UNTIL THE PIPELINE WAS DEPRESSURIZED. THE PROCESS OF DEPRESSURIZING THE PIPELINE IS ONGOING AND SEA ROBIN OPERATIONS IS WAITING ON THE AVAILABILITY OF DSV CREW TO MAKE THE REPAIR. A SUPPLEMENTAL REPORT WILL BE FILED ONCE THE REPAIRS HAVE BEEN COMPLETED. THE PLUG WAS REPLACED ON 8/21/22 AND THE LINE WAS PUT BACK IN SERVICE.