JAYHAWK PIPELINE LLC

Incident Narrative

OPERATOR PERSONNEL IDENTIFIED A RELEASE OF APPROXIMATELY 0.5 BARREL SEEPING FROM THE CHIME AREA ON TANK 2060 AT CHASE STATION ON MAY 25, 2020 AT 8:55 A.M. CST AND ISOLATED THE TANK AND PERFORMED CLEANUP, PER PROCEDURE. TANK 2060 WAS CONSTRUCTED IN 1968 BY HORTON TANK AND HAS A CALCULATED MOP OF APPROXIMATELY 19 PSI, BASED ON A MAX FILL HEIGHT OF 45 FEET. AS A RESULT OF THE RELEASE, JAYHAWK PIPELINE COMMISSIONED A TANK INSPECTION TO INVESTIGATE THE CAUSE OF FAILURE. THE TANK FLOOR LINER WAS FOUND TO BE INTACT, THEREFORE, THERE WAS NO EVIDENCE THAT THE LEAK ORIGINATED FROM THE TANK FLOOR. THE ONLY OTHER POTENTIAL SOURCE FOR THE RELEASE WAS PIPING THAT RUNS FROM THE BOTTOM OF THE TANK TO THE SUMP. THE SUMP PIPING WAS TIED TO THE BOTTOM OF THE TANK VIA A NOZZLE LOCATED APPROXIMATELY TWO FEET FROM THE TANK SHELL. GIVEN THE PROXIMITY OF THE PIPING TO THE TANK SHELL, JAYHAWK PIPELINE WAS ONLY ABLE TO REMOVE APPROXIMATELY 20"" OF PIPING THAT DID NOT CONTAIN ANY FAILURES THAT WOULD HAVE LED TO THE RELEASE. DUE TO THE INACCESSIBLE NATURE OF THE REMAINING SUMP PIPING, THE SPECIFIC CAUSE OF THIS RELEASE WAS UNABLE TO BE DETERMINED. CORRECTIVE ACTIONS: THE NOZZLE AND SUMP PIPING HAVE BEEN PERMANENTLY REMOVED FROM SERVICE AND NOT REPLACED (I.E., INSTALLATION OF AN IN-TANK SUMP). TANK 2060 HAS UNDERGONE FURTHER INSPECTION (VACUUM BOX WELD INSPECTION/MLF/VISUAL SCAN) AND WILL UNDERGO A HYDROTEST PRIOR TO BEING RETURNED TO SERVICE.