TORRANCE VALLEY PIPELINE COMPANY LLC

Incident Narrative

ON JUNE 2, 2019, AT APPROXIMATELY 0137 HRS PST, UPON ARRIVAL TO THE BELRIDGE STATION IN AN EFFORT TO VERIFY RATES FROM AERA SECTION 2 AND TANK LEVELS, THE GAUGER DISCOVERED A CRUDE OIL RELEASE COMING FROM PUMP #2 RELIEF VALVE. THE GAUGER RESPONDED BY IMMEDIATELY SHUTTING DOWN THE PUMP AND ISOLATING IT FROM THE SYSTEM. SPILL CALCULATION ESTIMATES APPROXIMATELY 9.2 BARRELS TO CONCRETE CONTAINMENT PAD AND ZERO OUTSIDE OF SECONDARY CONTAINMENT. AT 0208 HRS PST CAL OES WAS NOTIFIED, CONTROL NUMBER 19-3520. AT 0213 HRS PST CUPA KERN COUNTY WAS ALSO NOTIFIED. PRODUCT WAS PROMPTLY RECOVERED AND INJECTED BACK INTO THE SYSTEM. THE FAILED RELIEF VALVE WAS REPLACED AND THE PUMP RESUMED OPERATION. THE FAILED RELIEF VALVE HAS BEEN SENT TO THE LAB FOR FAILURE ANALYSIS; THE RESULTS WILL BE REPORTED IN A SUPPLEMENTAL REPORT TO THIS ORIGINAL 7000.1 REPORT. FURTHERMORE, RELIEF VALVE VENDOR PERFORMED A SITE VISIT TO REVIEW OPERATIONS PARAMETERS. _________________________________________________________________________________________________________________________ SUPPLEMENTAL/FINAL REPORT UPDATES: PART C - ADDITIONAL FACILITY INFORMATION, QUESTION 5 - IF MATERIAL OTHER THAN CARBON STEEL, SPECIFY: CHANGED FROM UNDETERMINED TO CARBON STEEL/STAINLESS PART E - ADDITIONAL OPERATING INFORMATION, QUESTION 7, 7A, 7B - CHANGED FROM YES TO NO PART G6 - EQUIPMENT FAILURE, QUESTION 6 - IF OTHER, DESCRIBE: CHANGED FROM UNDER INVESTIGATION TO SEE NARRATIVE PART H NARRATIVE DESCRIPTION OF THE ACCIDENT- TORRANCE VALLEY PIPELINE COMPANY RECEIVED THE FINAL RESULTS FROM DK AMANS. THE REPORT CONCLUDED THAT DUE TO THE CONDITION OF THE VALVE, INDICATED BY INTERNAL GOUGES, THE FAILURE OF THE VALVE MAY HAVE BEEN CONTRIBUTED TO THE DISC SPRING BREAKING LEADING TO THE VALVE BODY FAILURE. WHILE THE REPORT HAD OTHER FINDINGS, THE VALVE INTERNAL CONDITION APPEARS TO BE THE LEADING CAUSE FOR THE FAILURE. IMMEDIATELY AFTER THE FAILURE OF THE RELIEF VALVE, A NEW LIKE AND KIND VALVE WAS INSTALLED; HOWEVER, SUBSEQUENT REVIEW OF THE OPERATIONAL PARAMETERS SUPPORTS THE DECISION TO REPLACE THE VALVE WITH A FLANGED, NON-THREADED, BODIED VALVE. THIS IS ANTICIPATED TO TAKE PLACE BEFORE EOY 2019. UNTIL THE NEW RELIEF VALVE IS INSTALLED, THE FACILITY IS STAFFED AND MONITORED 24/7. THIS CONCLUDES THE INVESTIGATION AND ACTIONS TAKEN FOR THIS INCIDENT.