BUCKEYE PARTNERS, LP

Incident Narrative

ON THE MORNING OF MARCH 19, 2021 AN EMPLOYEE AT SUGAR CREEK TERMINAL IN SUGAR CREEK, MISSOURI OBSERVED A SHEEN ON WATER INSIDE THE TANK DIKE. ALL PRODUCT WAS CONTAINED INSIDE THE DIKE WALL AND THERE HAD BEEN EXCESSIVE RAINS DURING THE PAST WEEK. ADDITIONAL PERSONNEL WAS REQUESTED TO TANK 351 AND THEY DUG SOME POT HOLES AROUND THE WEST SIDE OF THE TANK AND INDICATIONS WERE SHOWING A POSSIBLE LEAK IN THE TANK FLOOR. BUCKEYE PERFORMED AN API 653 INTERNAL INSPECTION AND DISCOVERED A PINHOLE LEAK IN THE BOTTOM OF THE TANK. FURTHER INVESTIGATION IS BEING CONDUCTED. UPDATE: 9-2-2021 AN API 653-TANK INSPECTION WAS COMPLETED ON MARCH 27, 2021. THE PINHOLE WAS IN A BOTTOM LAP WELD AND IT WAS DETERMINED THIS WAS DUE TO TOPSIDE CORROSION. FOUR 6"" COUPONS WERE REMOVED FROM THE TANK FLOOR PRIOR TO REPAIR. SOIL SAMPLES WERE TAKEN FROM EACH HOLE AND NO PRODUCT, EXTREMELY HIGH VAPORS, NOR VOIDS, WERE DISCOVERED. LEL READINGS WERE <10 AND THE BOTTOM REPAIR WAS SAFELY COMPLETED. BOTTOM COUPONS WERE SENT OFF TO A LAB FOR ANALYSIS. OBSERVATIONS BEFORE REMOVAL INDICATE THE LEAK FEATURE WAS IN THE HEAT AFFECTED ZONE OF A LAP WELD. THE MORPHOLOGY IS CONSISTENT WITH A TOPSIDE CORROSION PIT. TO ELIMINATE FUTURE TOP-SIDE CORROSION, A 20MIL LINER WAS INSTALLED BEFORE RETURNING TO SERVICE. THE TANK WAS RETURNED TO SERVICE ON 5/18/2021.