ENTERPRISE CRUDE PIPELINE LLC

Incident Narrative

BEGINNING 9/3/2020 AT 18:50, HOUSTON CONTROL CENTER RECEIVED NOTICE OF SUMP ACTIVITY AT CORSICANA STATION. AT 22:00 THE SUMP WAS PUMPED DOWN BY THE CONTROLLER. AFTER THE PUMP-DOWN EVENT, HOWEVER, THE CONTROLLER CONTINUED TO OBSERVE A SLOW GAIN IN THE SUMP LEVEL AND DISPATCHED A TECH TO INVESTIGATE. ON 9/4/2020 AT 00:55, THE ENTERPRISE TECHNICIAN ARRIVED AT CORSICANA STATION AND DISCOVERED THE OUTBOARD SEAL ON UNIT #2 HAD FAILED. THE VOLUME OF THE RELEASE OVERWHELMED THE DRAIN TUBING. AN ESTIMATED 15 BBLS WERE RELEASED ONTO THE SKID AND SURROUNDING GROUND INSIDE THE STATION. ABSORBENT RAGS AND BOOMS WERE PLACED AROUND THE LEAK AREA IN PREPARATION FOR CLEAN-UP. A VACUUM TRUCK WAS CALLED IN FOR REMEDIATION. REMEDIATION WAS COMPLETED ON 09/15/2020. UPON REPAIR, THE PUMP WAS GIVEN A SEAL OF UPDATED DESIGN. DURING THE INVESTIGATION, IT WAS ALSO REALIZED THAT THE ALARMS DID NOT ACTIVATE DUE TO RESIDUE BUILDUP ON THE LEVEL FLOAT. TO PREVENT REOCCURRENCE, A FLUSH PLAN HAS BEEN DEVELOPED TO TEST FUNCTIONALITY ON AN ANNUAL BASIS AND MAINTAIN THE SEAL POT COMPONENTS.