MAGELLAN PIPELINE COMPANY, LP

Incident Narrative

THE RELEASE WAS DETECTED BY OPERATIONS PERSONNEL ON FEBRUARY 16 WHILE PREPARING THE TANK AND MOTOR FOR LOCK-OUT-TAG-OUT TO REPLACE THE PUMP MOTOR. THE PUMP FOR TANK 667 HAD BEEN INACTIVE SINCE FEBRUARY 10TH. THE PUMP IS MANUFACTURED BY BYRON JACKSON WHICH UTILIZES A COOLANT AND PRODUCT COOLANT JACKETED MOTOR HOUSING. THE DEFECTIVE JACKETING WAS SENT TO A LABORATORY FOR METALLURGICAL FAILURE ANALYSIS WHICH DETERMINED THAT THE MOTOR JACKETING BODY RUPTURED AS A RESULT OF INTERNAL WATER FREEZING WITHIN THE OIL ISOLATING TANK. THE FAILURE OCCURRED WHILE THE PUMP WAS IDLE FOR SEVERAL DAYS PRIOR TO THE FAILURE, AND THE INTERNAL PRESSURE IN THE PUMP WAS HEAD PRESSURE OF THE DIESEL PRODUCT IN THE STORAGE TANK IT WAS CONNECTED TO. WATER WHICH HAD COLLECTED IN THE ISOLATING PUMP EXPANDED AS IT FROZE INTO ICE CAUSING THE WELD TO RUPTURE. PROJECT FOR INSTALLATION OF A NEW TANK PUMP AND ASSOCIATED PIPING HAS BEEN COMPLETED. APPROXIMATELY 460 (10.95 BBL) GALLONS OF PRODUCT WAS RECOVERED BY VACUUM TRUCK. APPROXIMATELY 842. (20.05 BBL) GALLONS WAS RECOVERED BY EXCAVATION FROM SOIL. APPROXIMATELY 80 CUBIC YARDS OF CONTAMINATED SOIL WAS REMEDIATED. JUNE 14, 2016 SUPPLEMENTAL REPORT FILED TO CORRECT LONGITUDE AND UPDATE EMERGENCY RESPONSE AND ENVIRONMENTAL REMEDIATION COSTS. THIS SUPPLEMENTAL REPORT WAS FILED TO UPDATE THE CAUSE, COSTS, NARRATIVE DESCRIPTION OF THE FAILURE AND THE ANTICIPATED COST OF THE INSTALLATION OF A NEW TANK PUMP AND PIPING. 3/12/2018 SUPPLEMENTAL FINAL REPORT FILED TO UPDATE PART D 8C, ESTIMATED COST OF OPERATOR'S PROPERTY DAMAGE & REPAIRS, AND PART H NARRATIVE.