MEDALLION OPERATING COMPANY, LLC

Incident Narrative

ON THE MORNING OF 3/11/19 AT 08:20 LOCAL OPERATIONS PERSONNEL IDENTIFIED AND REPORTED A LEAK FROM A TANK PUMP SEAL (P-3510) WHILE ON NORMAL PATROL ROUNDS. OPERATIONS PERSONNEL ISOLATED THE PUMP LOOP AND THE FACILITY REMAINED IN SERVICE UTILIZING PARALLEL PUMPS. SPILL CREWS RESPONDED IMMEDIATELY AND THE AFFECTED SOIL WAS REMEDIATED AND SPILL CLEAN UP WAS COMPLETED THE SAME DAY. THE AMOUNT OF PRODUCT LOST WAS APPROXIMATELY 3 BBL AND 3 BBL WERE RECOVERED DURING REMEDIATION. A MECHANICAL CREW WAS DISPATCHED TO REPAIR THE SEAL AND ARRIVED ONSITE THE SAME MORNING. WHILE DISASSEMBLING THE PUMP THE CREW NOTED THAT TWO OF THE SIX PUMP HOUSING BOLTS WERE BROKEN. AFTER COMPLETING THE TEAR DOWN OF THE PUMP, MECHANICS FOUND EXCESSIVE WEAR ON THE SHAFT SUPPORT BUSHING LIKELY CAUSING EXCESSIVE VIBRATION AND THE FAILURE OF THE BOLTS AND SEAL. MEDALLION HAS FIVE (5) IDENTICAL PUMPS ACROSS THE SYSTEM. NONE OF THE PUMPS HAVE EXPERIENCE A SIMILAR FAILURE OR HAVE EXHIBITED WEAR ON THE BUSHING. MEDALLION CONSIDERS THE WEAR TO THE INTERNAL SUPPORT BUSHING TO BE BEYOND ANY REASONABLE PREVENTATIVE MAINTENANCE PROGRAM AND THE ACCIDENT IS THE RESULT OF AN ISOLATED MECHANICAL FAILURE. IN ADDITION TO AID IN REDUCING WEAR AND VIBRATION, MEDALLION WILL INSTALL VFDS TO ALLOW SPEED CONTROL OF THE PUMPS.