TORRANCE VALLEY PIPELINE COMPANY LLC

Incident Narrative

ON NOVEMBER 19, 2020, AT APPROXIMATELY 1554 HRS PST, TEJON RANCH PERSONNEL CONTACTED TORRANCE LOGISTICS CONTROL CENTER (PCC) NOTIFYING CRUDE OIL WAS OBSERVED EAST OF THE NORTHBOUND I-5 HIGHWAY, ALONG A DIRT ACCESS ROAD. PCC IMMEDIATELY NOTIFIED FIELD SUPERVISION. FIELD SUPERVISOR ARRIVED ON SITE AT APPROXIMATELY 1653 HRS PST AND MET WITH TEJON RANCH PERSONNEL. TORRANCE LOGISTICS SUPERVISOR CONFIRMED AN ACTIVE LEAK OF CRUDE TO SOIL FROM AN UNKNOWN SOURCE AND REQUESTED PCC SHUT DOWN THE PIPELINE AT 1704. INITIAL SPILL CALCULATION ESTIMATED APPROXIMATELY 5 BARRELS TO SOIL. INTERNAL AND EXTERNAL NOTIFICATIONS WERE PROMPTLY MADE ON NOVEMBER 19, 2020; CAL OES WAS NOTIFIED AT 1729 HRS PST, CONTROL NUMBER 20-6468. AT 1741 HRS PST, NRC WAS NOTIFIED #1292660 AND CUPA KERN COUNTY WAS ALSO NOTIFIED AT 1751 HRS PST. RESPONSE AND CLEANUP EFFORTS WERE DEPLOYED IMMEDIATELY. EXCAVATION EFFORTS CONTINUED INTO NOVEMBER 20TH IN AN EFFORT TO CONFIRM THE SOURCE OF THE LEAK. AT APPROXIMATELY 1800 HRS PST, TORRANCE LOGISTICS CONFIRMED THE SOURCE AS M1. SUBSEQUENT NRC REPORTS WERE MADE AS FOLLOWS: NOVEMBER 20, 2020, TORRANCE LOGISTICS CLAIMED AS THE RESPONSIBLE PARTY, NRC #1292686. ON NOVEMBER 21, 2020, 48-HR NRC UPDATED VOLUME TO 17.5 BARRELS, NRC #1292783. THE SOURCE OF THE RELEASE WAS FOUND TO BE FROM A CIRCUMFERENTIAL CRACK. THE FAILED AREA WAS REPAIRED WITH A PLIDCO SPLIT SLEEVE CLAMP, WITH WELDED SEAM, ENDS, STUDS AND BOLTS. PLANS TO REMOVE THIS SECTION OF PIPE FOR FURTHER ANALYSIS, RESULTS WILL BE PROVIDED IN A SUPPLEMENTAL 7000.1 REPORT. ______ CORRECTION TO INITIAL PART H - NARRATIVE DESCRIPTION OF THE ACCIDENT: - ON NOVEMBER 19, 2020, AT APPROXIMATELY 1610 HRS PST - FIELD SUPERVISOR ARRIVED ON SITE AT APPROXIMATELY 1654 HRS PST - REQUESTED PCC SHUT DOWN THE PIPELINE AT 1702. - NOVEMBER 20, 2020, TORRANCE LOGISTICS UPDATED VOLUME RELEASED TO 10.3 BARRELS OF CRUDE OIL RELEASED, NRC #1292686. ON NOVEMBER 21, 2020, 48-HR NRC #1292783 REPORT WAS MADE; UPDATED VOLUME FROM 10.3 TO 17.5 BARRELS RELEASED AND RESPONSIBLE PARTY (RP) WAS UPDATED TO TORRANCE LOGISTICS. SUPPLEMENTAL / FINAL REPORT UPDATES: - PART E, ITEM 1, - PART E, ITEM 9 - PART G APPARENT CAUSE: CHANGED FROM G8, OTHER INCIDENT CAUSE TO G2, NATURAL FORCE DAMAGE - PART G2 SELECTIONS PART H - NARRATIVE DESCRIPTION OF THE ACCIDENT: THE PREVIOUSLY REPAIRED SEGMENT WHICH CONTAINED THE PLIDCO SPLIT SLEEVE CLAMP WAS CUTOUT AND REPLACED WITH NEW PIPE ON MARCH 6, 2021. THE REMOVED SEGMENT OF PIPELINE WAS SENT OFF TO A THIRD-PARTY LABORATORY FOR ANALYSIS. TORRANCE VALLEY PIPELINE (TVP) RECEIVED FAILURE INVESTIGATION RESULTS FROM THE THIRD-PARTY LABORATORY; AND A FINAL INCIDENT INVESTIGATION IS COMPLETE. THE ROOT CAUSE HAS DETERMINED TO BE RELATED TO EXTERNAL FACTORS (I.E., HISTORICAL LAND MOVEMENT, TERRAIN, CYCLIC WEATHER PATTERNS IN THE AREA OF THIS PIPELINE SEGMENT). THERE IS A HISTORY OF LAND MOVEMENT IN THE AREA, ALL WHICH HAS CONTRIBUTED TO UNINTENTIONAL BENDING OF THE PIPELINE CAUSING THE CIRCUMFERENTIAL CRACKING FOUND AT THE LEAK SITE. INITIAL CORRECTIVE ACTIONS INCLUDED REMOVAL OF THE FAILED SEGMENT OF PIPE TO PERFORM METALLURGICAL ANALYSIS, FOLLOWED BY REPLACEMENT OF THE SAME SEGMENT OF PIPE WITH THE APPROPRIATE BENDS/FITTINGS THEREBY RELIEVING THE STRESS ON THE PIPELINE. ADDITIONAL CORRECTIVE ACTIONS TAKEN INCLUDED LEVERAGING EMERGING TECHNOLOGIES SUCH AS SMFL AND CIRCUMFERENTIAL CRACKING ANALYSIS FOR THE PURPOSE OF IMPROVING ASSESSMENT OF CIRCUMFERENTIALLY ORIENTED CRACKING AND IDENTIFYING UNINTENTIONAL PIPELINE BENDING. FOLLOWING THE RELEASE, TWO ADDITIONAL INVESTIGATORY DIGS WERE PERFORMED WHICH VALIDATED THE CIRCUMFERENTIAL CRACKING ANALYSIS. THIS CONCLUDES THE FINDINGS AND INVESTIGATION FOR THIS INCIDENT. ___ SUPPLEMENTAL UPDATES MADE PER PHMSA REQUEST FOR PART A, PART B. ADDITIONALLY, PER NEW QUESTIONS IMPLEMENTED BY PHMSA SINCE THE TIME OF THIS ACCIDENT, THOSE HAVE BEEN ANSWERED.