SUNOCO PARTNERS MARKETING & TERMINALS LP

Incident Narrative

AT APPROXIMATELY 12:30 ON 02/24/19 COMPANY EMPLOYEE WAS PERFORMING ROUTINE ROUNDS IN THE TERMINAL AND FOUND THE SUMP TO BE OVERFILLED AT THE ROTATION MANIFOLD. EMPLOYEE CONTACTED THE LOCAL CONTROL ROOM AND REQUESTED THE BOOSTER PUMP RUNNING AT THE TIME TO BE SHUT DOWN. APPROXIMATELY 2 BARRELS OF CRUDE OIL OVERFLOWED FROM THE SUMP. VACUUM TRUCK WAS DISPATCHED TO THE AREA AND ALL FREE PRODUCT WAS COLLECTED. CONTAMINATED SOIL WAS REMOVED AND WILL BE REMEDIATED ON SITE. CLEAN BACK FILL WAS BROUGHT IN. THE BOOSTER PUMP HAD RECENTLY BEEN INSTALLED. IT WAS DETERMINED THAT THE OVERPRESSURE PROTECTION SET POINT HAD BEEN SET TOO LOW WHICH CAUSED RELIEF FLOW TO THE SUMP AT NORMAL OPERATING PRESSURES. THIS SUMP IS EQUIPPED WITH HI AND HI/HI ALARM SET POINTS HOWEVER A NEW CONTROL SYSTEM HAD RECENTLY ALSO BEEN IMPLEMENTED AND THESE SET POINTS DID NOT TRANSITION TO THE NEW SYSTEM. HAD THESE SET POINTS BEEN PROGRAMMED PROPERLY THE SUMP HI SET POINT WOULD HAVE ALARMED IN SCADA AND AUTOMATICALLY SHUT DOWN THE BOOSTER PUMP. DOWNTIME WAS TAKEN TO ADDRESS ALL ISSUES. THE OVERPRESSURE PROTECTION SET POINT WAS PROPERLY IMPLEMENTED WHICH WILL PREVENT ACTIVATION AT NORMAL OPERATING PRESSURES. THE HI AND HI/HI ALARMS ARE PROPERLY PROGRAMMED INTO SCADA AND TESTED TO ENSURE SCADA ALARMS AND THE BOOSTER PUMP SHUTS DOWN IN THE EVENT OF A HI SUMP ALARM.