KINDER MORGAN CO2 CO. LLC

Incident Narrative

ON 02/02/21, A KINDER MORGAN OPERATOR DISCOVERED A LEAK AT THE WHITE LAKES BLOCK VALVE SITE 230 WHEN HE ARRIVED AT THE SITE TO PERFORM MONTHLY FACILITY INSPECTION. THE OPERATOR NOTIFIED THE SUPERVISOR AND CONTROL CENTER. THE 12"" INLET UPSTREAM BLOCK VALVE FOR THE PRESSURE RELIEF VALVE LINE WAS LEAKING AROUND UPPER/LOWER CLOSURE. THE RELIEF LINE SECTION DOWNSTREAM OF 12"" VALVE WAS ISOLATED AND BLOWN DOWN IN AN ATTEMPT TO STOP THE LEAK. THE LEAK WAS STOPPED USING A VALVE GREASE BASED SEALANT ON 02/04 AT 10:30 AM CST. THE PIPELINE OPERATIONS WERE NORMAL PRIOR TO DISCOVERY OF LEAK AND AFTER THE LEAK. IT IS UNKNOWN IF THE GREASE SEALED A COMPROMISED O-RING OR ADDED LUBRICITY AND PLIABILITY. THE FOLLOWING IS A CONTINUATION FROM PART A , QUESTION #6: A 48-HOUR FOLLOW UP TO THE NRC WAS ON 02/04 AT 17:17 CST, REPORT # 1297380 UPDATED 03/23: THE O-RING WAS THE SOURCE OF THE LEAK AND WE CLOSED THE VALVE AND FILLED THE BODY CAVITY OF THE VALVE WITH THE GREASE BASED SEALANT. THE LEAK WAS STOPPED AFTER INJECTING THE SEALANT AND VALVE WAS RETURNED TO THE NORMAL OPEN POSITION. THE LEAK WAS IDENTIFIED BY VISUAL INSPECTION BY AN OPERATOR. THE CO2 LEAK WAS COMING FROM THE SEAM BETWEEN UPPER/LOWER CLOSURE OF THE VALVE. THE O-RING BETWEEN THE UPPER/LOWER CLOSURE IS ONLY BARRIER TO KEEP THE CO2 CONTAINED WITHIN THE VALVE BODY. SHOULD THE VALVE START TO LEAK AGAIN, A PLAN HAS BEEN CREATED TO STOP THE LEAK BY INJECTING SEALANT IN THE VALVE BODY CAVITY.