PLAINS PIPELINE, L.P.

Incident Narrative

APPROXIMATELY 6 BARRELS OF CRUDE OIL WERE RELEASED WITHIN FACILITY BOUNDARIES FROM BOOSTER PUMP 2417. THE DATE AND TIME OF THE RELEASE (07/24/2019 AT 13:22) IS INDICATIVE OF THE EARLIEST POSSIBLE TIME THE RELEASE COULD HAVE STARTED, AS IT WAS THE LAST TIME THE LOCATION HAD BEEN VISITED AND CONFIRMED THAT NO CRUDE OIL WAS BEING RELEASE. TO STOP THE IMMEDIATE RELEASE OF OIL, PLAINS PLACED A CLAMP ON THE RELEASE LOCATION. THE CAUSE OF THE INCIDENT IS STILL UNDER INVESTIGATION, AND A SUPPLEMENTAL REPORT WILL BE SUBMITTED, PENDING THIRD PARTY ANALYSIS OF THE FAILED SECTION OF PIPE. SUPPLEMENTAL NARRATIVE: FOLLOWING THIRD PARTY FAILURE ANALYSIS, IT WAS DETERMINED THAT THE LEAK WAS ASSOCIATED WITH A VERY NARROW AND SHARP INTERNAL PIT AND WAS LOCATED WITHIN AN AREA OF ACCUMULATED SOLIDS. MICROORGANISMS LIKELY PLAYED A PRIMARY ROLE IN THE CORROSION MECHANISM. PRIOR TO THE INCIDENT, THE RELEASE LOCATION WAS IDENTIFIED USING PHASED ARRAY ULTRASONIC TESTING (PAUT) WHICH IDENTIFIED APPROXIMATELY 76% METAL LOSS. HOWEVER, THE LOCATION PASSED THREE INDUSTRY ACCEPTED METHODS OF PRESSURE CALCULATIONS, AND THEREFORE THE FAILURE LOCATION DID NOT HAVE A TEMPORARY REPAIR INSTALLED PRIOR TO THE INCIDENT. SINCE THE RELEASE, THE FACILITIES ADVANCED NDT ASSESSMENT PROCEDURE HAS BEEN UPDATED TO REQUIRE THAT ANY INDICATIONS IDENTIFIED OF OVER 70% METAL LOSS UNDERGO MITIGATION WITHIN A SET TIMELINE TO PREVENT SIMILAR SITUATIONS FROM OCCURRING. IN ADDITION, THE REMAINING PIPE WITHIN THE MANIFOLD AT WINK SOUTH HAS BEEN FULLY INSPECTED USING PAUT AND AUTOMATED ULTRASONIC TESTING (AUT). IT HAS ALSO BEEN TREATED MULTIPLE TIMES WITH BIOCIDE AND HAS TEMPORARY ULTRASONIC TESTING (UT) SENSORS ON THE PIPE TO CONTINUALLY MONITOR THE CORROSION GROWTH RATES.