"PLAINS PIPELINE, L.P."

Incident Narrative

"APPROXIMATELY 90 BARRELS OF CRUDE OIL WERE RELEASED WHEN THE WELD ON A 22 INCH DIAMETER PIPELINE FAILED. AT THIS TIME, THE CAUSE CANNOT BE DETERMINED UNTIL THE PIPE IS ANALYZED BY A METALLURGICAL LABORATORY. A SUPPLEMENTAL REPORT WILL BE SUBMITTED ONCE THE METALLURGICAL ANALYSIS RESULTS ARE RECEIVED. SUPPLEMENTAL NARRATIVE: BASED ON THE METALLURGICAL ANALYSIS RESULTS, THE CAUSE OF THIS RELEASE WAS WELD FAILURE DUE TO A CRACK THAT INITIATED ON THE INSIDE SURFACE OF THE PIPE. THE CRACK LIKELY INITIATED AT AN AREA OF INADEQUATE PENETRATION AT THE WELD ROOT AND PROGRESSED ALONG THE FUSION LINE OF THE WELD, WHICH EXHIBITED SOME AREAS OF INCOMPLETE FUSION AND POROSITY IMPERFECTIONS. ADDITIONAL CRACK INITIATION SITES WERE ALSO OBSERVED ALONG THE TOE OF THE WELD ROOT. THE PIPE WAS IMMEDIATELY REPLACED AND WAS HYDROTESTED AND 100% X-RAY ON WELDS PRIOR TO START UP. SUPPLEMENTAL COSTS: THE COST OF THIS RELEASE HAS BEEN UPDATED. TOTAL COST OF RELEASE IS $49,312 SUPPLEMENTAL NARRATIVE: BASED ON THE METALLURGICAL ANALYSIS RESULTS, THE CAUSE OF THIS RELEASE WAS DETERMINED TO BE WELD FAILURE. TO SATISFY THE REQUIREMENTS OF THE REVISED 7000-1 REPORT, PART C, QUESTIONS 3A - 3H HAVE BEEN UPDATED. THE SMYS HAS BEEN UPDATED PER PHMSA REQUEST."