ASIG - HONOLULU

Incident Narrative

IN LATE DECEMBER FOLLOWING FILLING THE TANK VIA OCEAN VESSEL, CONTROLLERS NOTED INVENTORY DISCREPANCIES ON THE TANK. A SUPERVISOR WAS NOTIFIED, AND THE TANK BEGAN BEING EMPTIED BY TRANSFERRING PRODUCT TO THE AIRPORT TERMINAL ON DECEMBER 26, 2014. ONCE THE TANK LEVEL WAS BELOW THE LEVEL OF THE SUCTION AND CARGO VALVES (TO ELIMINATE THEM AS A SOURCE OF THE PRODUCT LOSS), THE TRANSFER WAS HALTED. TWO DAYS LATER INVENTORY MOVEMENT WAS AGAIN NOTED, AND TANK 2 WAS EMPTIED INTO A NEARBY TANK ON 1/7/2016. SEVERAL NEARBY MONITORING WELLS WERE TAGGED, BUT NO PRODUCT WAS NOTED. AFTER THE TANK WAS DEGASSED AND CLEANED, THE FLOOR WAS MFL SCANNED, AND METAL LOSS WAS NOTED AT THE 6-INCH PATCH PLATE. A VACUUM BOX TEST CONFIRMED THE FAILURE. COUPONS WERE CUT IN THE FLOOR ON JANUARY 21, 2015, AND THE RELEASE WAS CONFIRMED. NRC WAS IMMEDIATELY NOTIFIED AND OUR EMERGENCY RESPONSE BEGAN. NOTE: PART A ITEM 14 - BREAKOUT TANK 2 WAS REMOVED FROM SERVICE PENDING REPAIR DECISIONS. THE REST OF THE FACILITY REMAINS UNAFFECTED. METALLURGIC ANALYSIS INDICATES COATING FAILURE (HOLIDAY) WHICH LEAD TO CORROSION AT A PREVIOUSLY INSTALLED PATCH. THE TANK FLOOR WAS REPLACED AND WORK WAS COMPLETED IN JANUARY 2017. ALTHOUGH THE LEAK WAS CONFIRMED ONCE COUPONS WERE CUT INTO THE FLOOR ON JANUARY 21, 2015, THE LEAK ACTUALLY BEGAN ON DEC 14, 2014. NOTE: AT THE TIME OF THE INCIDENT, THE OPERATOR NAME WAS ASIG - IT HAS SUBSEQUENTLY BEEN CHANGED AND WAS REPORTED TO PHMSA. HOWEVER, THIS ELECTRONIC FORM WILL NOT ALLOW EDITS TO THE ""OPERATOR NAME"" FIELD.