PHILLIPS 66 PIPELINE LLC

Incident Narrative

ON 12/24/16, THE CONTROL CENTER RECEIVED A LANDOWNER COMPLAINT ADVISING OF A CRUDE OIL SMELL. P66 PERSONNEL ARRIVED ON LOCATION AT APPROXIMATELY 09:35 AM AND DISCOVERED A CRUDE OIL RELEASE ON PIPELINE. THE CAUSE OF THE INCIDENT WAS DUE TO FAILURE OF THE O-RING BETWEEN THE CHECK VALVE BONNET (LID) AND THE VALVE BODY. THE O-RING WAS IMPROPERLY INSTALLED IN THE VALVE LID FROM MAINTENANCE, TO REMOVE A VALVE CLAPPER DURING A 2012 HYDRO-TEST. 2017-4-10 UPDATE - PART ""E"" UPDATED DISTANCE BETWEEN MANUAL ISOLATION VALVES. UPDATED DETAILS AROUND CONTROL CENTER PORTION OF INVESTIGATION. 2017-6-8 UPDATED CAUSE/ROOT CAUSE AND FAILURE MECHANISM. 2017-7-24 - UPDATED NARRATIVE PER TRRC/PHMSA REQUEST: AT APPROXIMATELY 8:38 AM ON 24 DEC 2016, PHILLIPS 66 PIPELINE, LLC (PHILLIPS) RECEIVED A CALL TO THE BARTLESVILLE CONTROL CENTER (BCC) FROM A LANDOWNER REPORTING A CRUDE OIL RELEASE NEAR THE ABOVEGROUND BLOCK VALVE (BV) AT STATION PLUS (SP) 1014+84. PHILLIPS 66 PIPELINE LLC PERSONNEL ARRIVED ONSITE AND CONFIRMED THE LEAK AT THE NORTH LITTLE WICHITA RIVER 8' CHECK VALVE IMMEDIATELY UPSTREAM OF BV NT90-06. PRIOR TO THE ACCIDENT, THE PIPELINE WAS ISOLATED BY BCC ON 23 DEC 2016 TO VERIFY A PIPELINE LEAK MANAGEMENT (PLM) IMBALANCE ALARM AT 4:05 PM. DURING THE PLM INVESTIGATION, THE NT-90 PIPELINE WAS ISOLATED BETWEEN THE JACKSBORO STATION UPSTREAM AND THE CARSON PUMP STATION DOWNSTREAM AT APPROX. 4:29 PM, APPROXIMATELY 62 MILES. PHILLIPS CONDUCTED A STAND-UP PRESSURE TEST OF NT-90 & NT-70, BUT THE RESULTS WERE INCONCLUSIVE. DUE TO LOCAL CONDITIONS, FURTHER INVESTIGATION COULD NOT BE CONDUCTED ON 23 DEC 2016, SO THE PIPELINE WAS LEFT ISOLATED AND PRESSURIZED FOR FURTHER INVESTIGATION. BEFORE THAT INVESTIGATION COULD BE CONDUCTED ON 24 DEC 2016, THE LANDOWNER REPORTED THE RELEASE AT 8:38 AM. UPON CONFIRMATION BY PHILLIPS PERSONNEL AT 9:30 AM, PHILLIPS ENACTED THEIR EMERGENCY RESPONSE PROCEDURES & THE PIPELINE WAS FURTHER MANUALLY ISOLATED AT BV NT90-06 IMMEDIATELY DOWNSTREAM OF THE LEAKING CHECK VALVE AND BV HWY 79 VALVE AT SP 976+00 BETWEEN 9:30-11:30 AM. INITIAL ESTIMATES WERE 50 BARRELS, THEN UPDATED TO 100 BARRELS, WITH A FINAL CALCULATION OF 202 BARRELS. THE RELEASE SITE WAS ISOLATED AND CONTAINED LATE AFTERNOON ON 24 DEC 2016, AND CLEANUP EFFORTS BEGAN WHILE THE LEAKING CHECK VALVE WAS BEING REPLACED. ON 25 DEC 2016, ANOTHER STAND-UP PRESSURE TEST WAS CONDUCTED AND PASSED AFTER THE LEAKING CHECK VALVE WAS REPLACED. NT-90 WAS PLACE BACK INTO SERVICE LATE THAT NIGHT, WHILE CLEANUP CONTINUED. TOTAL SITE CLEANUP AND REMEDIATION WAS COMPLETED ON 01 FEB 2017. 2017-7-24 - UPDATED PART A, ITEM #4 - LOCAL TIME AND DATE OF INCIDENT. UPDATED PART A, ITEM 14 - WAS PIPELINE/FACILITY SHUTDOWN DUE TO INCIDENT UPDATED PART A, ITEM 18 - TIME SEQUENCE