HOLLY ENERGY PARTNERS - OPERATING, L.P.

Incident Narrative

AT 0803 CST AN HEP FIELD TECHNICIAN CALLED IN A CRUDE OIL SPILL ON THE GROUND AT RUSSELL STATION DUE TO A LEAK ON THE RECEIVING PIG TRAP AT THAT TIME IT WAS REPORTED THAT SPILL WAS UNDER 10 GALLONS. CAUSE OF RELEASE APPEARED TO BE THE O-RING HAD FAILED. THE SUMP BOX HAD OVERFILLED AND HAD OVERFLOWED TO THE SURROUNDING GROUND AND POOLED IN A LOW SPOT NEAR THE TRAP. THE HEP FIELD TECHNICIAN BYPASSED THE PIG TRAP TO PREVENT FURTHER LEAKING. INITIAL REPORTING STATED THAT RELEASE WAS LESS THAN 10 GALLONS, HOWEVER AT 0941 CST CONFIRMATION WAS RECEIVED THAT THE ACTUAL RELEASE WAS APPROXIMATELY 72 GALLONS. THUS, MAKING THE RELEASE A REPORTABLE QUANTITY. NOTIFICATION WAS THEN GIVEN TO NRC AT 1015CST. LEAKING WAS FOUND TO BE FROM NORMAL WEAR AND TEAR OF THE O-RING. O-RINGS ARE INSPECTED ROUTINELY WHEN PIGS ARE RAN. THE O-RING IN QUESTION WAS REPLACED. MITIGATION PLAN: O-RINGS SEALS ARE INSPECTED MONTHLY DURING SCRAPER RUNS WHEN SCRAPER TRAPS ARE OPENED, GOING FORWARD WE CAN INSPECT TRAP DOORS DURING ROUTINE DAILY STATION RUNS AND DOCUMENT ANY DISCREPANCIES ON OUR BY- MONTHLY STATION INSPECTIONS REPORTS , IF A TRAP DOOR SHOWS SIGNS OF ANY DRIP THEN TRAP WOULD BE ISOLATED, DRAINED AND OPENED TO REPLACE O-RING SEAL OR WHATEVER MAINTENANCE ISSUE IS REQUIRED ON TRAP DOOR.