SUNOCO PIPELINE L.P.

Incident Narrative

THE WAYNE PUMP STATION WAS NOT RUNNING AT THE TIME OF THE RELEASE. THE PUMP STATION WAS ISOLATED BY STATION MAIN LINE VALVES FROM THE MARYSVILLE TO TOLEDO MAINLINE. IN PREPARATION FOR COMMISSIONING AND START-UP, TWO MECHANICAL TECHNICIANS WERE CONDUCTING CHECKS OF PRESSURE RELIEF VALVES ASSOCIATED WITH THE WAYNE PUMP STATION SUMP TANK SYSTEM. THE MECHANICS USED THE SUMP PUMP, A POSITIVE DISPLACEMENT PUMP, IN AN ATTEMPT TO FILL AND APPLY PRESSURE TO THE RELIEF SYSTEM. THE PRESSURE APPLIED TO THE PIPING SYSTEM FROM THE SUMP PUMP WAS SUFFICIENT TO OVERCOME THE SYSTEM INTEGRITY RESULTING IN THE RELEASE. A 45 DEGREE ELBOW ALONG A SECTION OF 16 INCH PIPE FAILED, RELEASING 3 BARRELS OF HEAVY CRUDE OIL FROM ABOVEGROUND PIPING AT THE STATION. SUPPLEMENTAL SUBMITTED ON 3/28/2013 TO INCLUDE PART E5F PER PHMSA REQUEST. CWAY-WAYNE CRUDE PUMP STATION-AN ENVIRONMENTAL SERVICES CONTRACTOR WAS ACTIVATED AT THE SAME TIME AS THE OSRO CONTRACTORS. RESPONSE AND REMEDIATION ACTIONS WERE COORDINATED AND SUPERVISED BY THE ENVIRONMENTAL SERVICE CONTRACTOR. AS PART OF THE RESPONSE, APPROXIMATELY 160 CUBIC YARDS OF IMPACTED SOIL WAS SCRAPED FROM THE GROUND SURFACE, TRANSPORTED FROM THE SITE AND PROPERLY DISPOSED AT EQ DETROIT IN DETROIT, MI AND AT THE MICHIGAN DISPOSAL TREATMENT PLANT IN BELLEVILLE, MI. THE ENVIRONMENTAL SERVICE CONTRACTOR SUPERVISED THE REMEDIATION WHICH INCLUDED INITIAL CLEAN UP, POST-CLEAN UP SOIL SAMPLING, ASSESSMENT OF ENVIRONMENTAL IMPACT AND SUBMITTAL OF REPORT TO MICHIGAN DEQ. THE RELEASE OCCURRED ABOVE GROUND, WAS LIMITED TO THE SOIL SURFACE AND DID NOT IMPACT GROUNDWATER. A REQUEST FOR DEQ REVIEW AND NO FURTHER ACTION REPORT WAS SUBMITTED TO THE MI DEQ AS CLOSURE TO THE CLEAN UP AND REMEDIATION. THE DAMAGED PUMP STATION EQUIPMENT HAS BEEN DE-CONSTRUCTED AND NEW EQUIPMENT INSTLLED TO REPLACE THE DAMAGED EQUIPMENT.