HOLLY ENERGY PARTNERS - OPERATING, L.P.

Incident Narrative

AT APPROXIMATELY 0420 CST A HEP TECHNICIAN DISCOVERED OIL SPRAYING FROM THE PUMP AREA OF UNIT #1 UPON HIS ARRIVAL AT RILEY STATION. THE TECHNICIAN IMMEDIATELY SHUT DOWN THE LINE AND MADE NOTIFICATION OF THE INCIDENT TO THE HEP CONTROL CENTER. AT THE INITIAL DISCOVERY OF THE RELEASE THE TECHNICIAN COULD NOT DETERMINE THE RELEASE AMOUNT DUE TO IT STILL BEING DARK OUT. AT 0513 CST THE TECHNICIAN REPORTED THAT THE APPROXIMATE AMOUNT OF RELEASE TO BE 10 BARRELS. AT 0539 CST THE HEP SUPERVISOR FOR THE AREA CONFIRMED THE RELEASE AMOUNT TO BE APPROXIMATELY 10 BARRELS. AT 0541 CST NOTIFICATION WAS MADE TO NRC VIA TELEPHONE. AT 0548 CST NOTIFICATION WAS MADE TO TXRRC VIA TELEPHONE. THE CAUSE OF THE RELEASE HAS BEEN DETERMINED TO BE DUE TO VIBRATIONS OF THE SURGE DAMPNERS NOT BEING CHARGED TO 100% CAUSING EXCESSIVE VIBRATIONS. THESE EXCESSIVE VIBRATIONS THEN IN TURN CAUSED THE CRACKING ON THE T FITTING OF THE PIPING. TO ADDRESS THIS ISSUE HEP FIELD TECHNICIANS ARE REQUIRED TO CHECK THE SURGE DAMPNERS ON A WEEKLY BASIS AND/OR WHEN ABNORMAL VIBRATIONS ARE PRESENT WHILE CONDUCTING THEIR DAILY ROUTINES.