PHILLIPS 66 PIPELINE LLC

Incident Narrative

DURING ROUTINE OPERATOR ROUNDS, A COMPANY OPERATOR DISCOVERED A RELEASE OF CRUDE OIL INSIDE SECONDARY CONTAINMENT ADJACENT TO TANK 120. UPON INVESTIGATION IT WAS DISCOVERED THAT A THREADED FITTING ON A ONE INCH RELIEF LINE HAD SEPARATED ALLOWING THE RELEASE OF APPROXIMATELY TWO BARRELS. ALL PRODUCT WAS CONTAINED ON OPERATOR CONTROLLED PROPERTY WITHOUT IMPACTING OUTFALL DRAINS OR ANY ADJACENT WATERWAYS. THE OPERATOR IMMEDIATELY INITIATED RESPONSE ORGANIZATIONS ON SITE, AS WELL AS APPROPRIATE SUPERVISION AND REGULATORY NOTIFICATIONS. AFTER LAB ANALYSIS, IT HAS BEEN DETERMINED THAT THE FAILURE WAS DUE TO HIGH CYCLE FATIGUE IN REVERSE BENDING MODE/PROGRESSIVE FATIGUE FAILURE. THIS WAS CREATED BY CYCLIC EFFECTS OF PRESSURE CYCLES ON THE FITTING. THE TRV ASSOCIATED WITH THIS THREADED CONNECTION HAS BEEN REMOVED AND THE LINE HAS BEEN CAPPED, TAKEN OUT OF SERVICE AND REROUTED TO ANOTHER MANIFOLD. AT THE TIME OF THE RELEASE, IT WAS DETERMINED THAT THE SERIOUS ACCIDENT REPORTING THRESHOLDS WOULD NOT BE MET AND THEREFORE NRC WAS NOT NOTIFIED. AS OF 5/19/2022 AT 11AM, THE CLEANUP AND REPAIR THRESHOLD FOR SERIOUS ACCIDENTS WAS MET AND NOTIFICATIONS WERE MADE AT THAT TIME. ALL CLEANUP ACTIVITIES WERE COMPLETED AND NO FURTHER ACTION WAS NEEDED.