MAGELLAN PIPELINE COMPANY, LP

Incident Narrative

AT 18:18 ON MARCH 29, 2022, THE MAGELLAN OPERATIONS CONTROL CENTER WAS NOTIFIED OF A PETROLEUM ODOR ON THE PAOLA - KANSAS CITY #3-8"" PIPELINE NEAR MP 187. THE LINE WAS SHUT DOWN, AN INVESTIGATIVE EVENT WAS INITIATED AND FIELD PERSONNEL WERE DISPATCHED TO THE SITE. FOLLOWING INVESTIGATION, THE #3-8"" PIPELINE WAS EXCAVATED AND THE ORIGIN OF THE RELEASE WAS IDENTIFIED. A CLAMP WAS INSTALLED ON THE PIPELINE TO PREVENT ADDITIONAL RELEASE OF PRODUCT AND CLEANUP ACTIVITIES WERE INITIATED. THE FOLLOWING DAY, THE CLAMP WAS REMOVED, PRODUCT CONTAINED, AND A TYPE B FULL-ENCIRCLEMENT SLEEVE WAS INSTALLED. FOLLOWING SUCCESSFUL COMPLETION OF THE RESTART PLAN, THE LINE WAS PLACED BACK IN SERVICE. THE AFFECTED JOINT WAS LATER CUTOUT AND SENT IN FOR METALLURGICAL TESTING. RESULTS OF THE METALLURGICAL TESTING INDICATE THE FAILURE WAS DUE TO EXTERNAL CORROSION, WITH CHARACTERISTICS CONSISTENT WITH MICROBIOLOGICALLY INFLUENCED CORROSION. TO PREVENT SIMILAR INCIDENTS IN THE FUTURE, MAGELLAN WILL ADHERE TO THE MEASURES STATED IN THE COMMITMENT LETTER AND REMEDIAL WORK PLAN AS SUBMITTED TO THE DIRECTOR OF PHMSA, CENTRAL REGION ON AUGUST 16, 2022. SUPPLEMENTAL/FINAL (PARTS G, H, J): 7/21/2022 SUPPLEMENTAL/FINAL (PARTS A, B, D, H): 11/29/2022