PHILLIPS 66 PIPELINE LLC

Incident Narrative

ON NOVEMBER 6, 2017 AT APPROXIMATELY 12:05 PM (CENTRAL TIME), MAINTENANCE CREWS HAD EXCAVATED A HALF SOLE REPAIR ON MX-30 AT MP 63.5 TO PERFORM AN ENHANCED INTEGRITY EVALUATION. ONCE THE DITCH WAS OPENED, THE CREW DID A SOAP TEST ON THE LINE AND DETERMINED THE LINE WAS WEEPING IN THE AREA OF THE HALF SOLE REPAIR WELD. THE CREW IMMEDIATELY NOTIFIED THE CONTROL CENTER AND THE PIPELINE WAS SHUTDOWN. PLANS WERE MADE AND EXECUTED TO DE-PRESSURE THE LINE AND REPLACE THE SECTION OF THE PIPELINE WHICH WAS WEEPING, ALONG WITH THE HALF SOLE REPAIR WHICH WAS BE EVALUATED. THE NEW SECTION OF PIPE WAS INSTALLED AND THE LINE WAS RESTARTED ON NOV 10, 2017 THE SECTION OF PIPE WHICH WAS REMOVED WAS SENT TO THE P66 LAB IN BARTLESVILLE, OK FOR ANALYSIS ON NOV 10, 2017. TO DATE, THE CAUSE OF THE LEAK HAS NOT BEEN DETERMINED. ONCE THE ANALYSIS IS COMPLETE, THIS REPORT WILL BE UPDATED AND FINALIZED. THIS UPDATED SUPPLEMENTAL REPORT CORRECTED THE LAT LONG COORDINATES OF THE LOCATION AND PROVIDED AN ESTIMATE OF THE REPAIR COSTS (WHICH WAS MISSED ON THE FIRST REPORT. THE INVESTIGATION IS STILL IN PROGRESS ON THIS INCIDENT, SO THIS REPORT WILL BE FINALIZED ONCE THE INVESTIGATION IS COMPLETE. UPDATE MAY 17, 2018. SUBSEQUENT LABORATORY ANALYSIS DETERMINED THAT THE HALF-SOLE PATCH WAS COVERING A THROUGH WALL ANOMALY ON THE PIPE AND THE PATCH WELDS WERE NOT ADEQUATE. P66 HAS NO RECORD OF THIS REPAIR BEING PERFORMED, SO IT IS UNKNOWN WHEN THE REPAIR WAS MADE OR WHAT WELDING PROCEDURE OR PROCESS WAS USED. AS FOLLOW UP TO THIS INCIDENT AND TO PREVENT REOCCURRENCE, P66 HAS IDENTIFIED AND ADDRESSED ALL HALF-SOLES ON MX-30 BY EITHER REPAIRING, CUTTING OUT, OR IDLING THE SECTION OF LINE CONTAINING THE HALF SOLE.