MAGELLAN PIPELINES HOLDINGS, LP

Incident Narrative

ON 6/5/19, LOCAL OPERATIONS PERSONNEL OBSERVED PRODUCT SEEPING UP THROUGH THE GROUND WEST OF THE ACTIVE ASSETS LOCATED AT THE DRUMRIGHT CRUDE FACILITY. OPERATIONS CONTROL WAS NOTIFIED AND ISOLATION VALVES WERE CLOSED TO ISOLATE THE FACILITY FROM THE MAINLINE. INVESTIGATIVE EVENT PROCEDURES WERE IMPLEMENTED AND ADDITIONAL RESOURCES RESPONDED TO THE SITE. CLEANUP ACTIVITIES WERE INITIATED. IMPACTED SOIL WAS COLLECTED AND CONTAINERIZED FOR PROPER DISPOSAL. ON 6/4/19, CONSTRUCTION ACTIVITIES WERE PERFORMED AT THE FACILITY TO MODIFY PIPING BETWEEN THE BOOSTER PUMP AND THE MAINLINE UNIT. TIE-IN ACTIVITIES WERE COMPLETED AND PRODUCT WAS INTRODUCED INTO THE NEW PIPING AND CONNECTIONS AT APPROXIMATELY 16:00 ON 6/4/19. THE RELEASE WAS OBSERVED AT APPROXIMATELY 14:35 ON 6/5/19. UPON FURTHER INVESTIGATION, IT WAS DETERMINED THAT THE DESIGN DRAWINGS FOR THE INSTALLATION OF THE TIE-IN CONNECTION PIPING WERE INACCURATE. THE DESIGN DRAWINGS IDENTIFIED THE CONNECTION LOCATION WOULD TIE INTO THE SUCTION LINE OF THE MAINLINE PUMP, HOWEVER, THE PHYSICAL TIE-IN POINT ENDED UP CONNECTING TO A PREVIOUSLY PURGED AND ABANDONED LINE. THE RELEASE ORIGINATED FROM A CORROSION FEATURE LOCATED ON THE BOTTOM OF THE ABANDONED PIPELINE SEGMENT. MOP OF THE ABANDONED LINE SECTION WAS BASED ON THE MOP OF THE ACTIVE CONNECTING ASSETS. THE ABANDONED LINE WAS DRAINED UP AND THE NEW CONNECTION PIPING WAS REMOVED TO DISCONNECT THE ABANDONED LINE FROM THE ACTIVE ASSETS. THE ABANDONED LINE WAS BLINDED. THE ACTIVE MAINLINE PUMP SUCTION LINE WAS LOCATED AND EXCAVATED TO VISUALLY CONFIRM THE TIE-IN LOCATION TO THE MODIFIED ASSETS WAS CORRECT. THE NEW CONNECTION WAS COMPLETED AND THE FACILITY RESUMED NORMAL OPERATIONS.