PHILLIPS 66 PIPELINE LLC

Incident Narrative

THIRD PARTY CALLED THE PHILLIPS 66 CONTROL CENTER VIA THE EMERGENCY PHONE NUMBER ON THE SEMINOE PIPELINE SYSTEM VALVE SITE AT MILE POST 2.7, REPORTING PETROLEUM PRODUCT LEAKING FROM VALVE SITE. UPON NOTIFICATION FROM 3RD PARTY, P66 CONTROL CENTER(CC) SHUT DOWN SM01 FROM BILLINGS, MT TO CASPER WY AND ISOLATED SYSTEM. CC NOTIFIED FIELD PERSONNEL AND THEY RESPONDED TO VALVE SITE AND FOUND A VALVE MISTING DIESEL FROM THE SIDE OF THE VALVE. PERSONNEL WHERE ABLE TO SAFELY ACCESS AND CLOSE THE MAINLINE ISOLATION VALVE JUST DOWNSTREAM OF THE LEAKING VALVE. ONCE VALVE CLOSED, OTHER PERSONNEL STARTED DEPRESSURIZING LINE BACK INTO BILLINGS PUMP STATION. ONCE THE SYSTEM WAS DRAINED AND SAFE, THE VALVE AND SPOOL WAS REMOVED AND REPLACED. VALVE HAS BEEN SENT TO PHILLIPS 66 RESEARCH CENTER FOR INVESTIGATION OF FAILURE. AT TIME OF THIS SUBMITTAL THE REPORT HAS NOT BEEN PUBLISHED. COSTS ASSOCIATED WITH CLEAN UP AND REPAIR HAVE NOT BEEN TABULATED AS OF THIS SUBMITTAL. ONCE NEW INFORMATION ARRIVES A SUPPLEMENTAL REPORT WILL BE DONE. 4/6/2023 UPDATE SUBMITTAL FAILURE REPORT SHOWS RUST FORMATION AROUND THE LOCATION OF THE LEAK( LOWER SECTION OF THE 3 PIECE NUTRON BRAND THREADED 1' BALL VALVE) DUE TO EXTERNAL WATER INTRUSION/INGRESS INTO THE THREADS. WATER FROZE AND CAUSED EXPANSION TO VALVE AT THREADED CONNECTION ON THE LINE SIDE CREATING THE LEAK POINT. UPDATED COST (TAB D) AS NEW AMOUNTS WERE TABULATED. AWAITING CLEANUP & DISPOSAL COSTS (EXPECTED END OF MAY 2023) 8-9-2023 FINAL COSTS FOR RELEASE UPDATED ON PART D- FINAL REPORT UPDATE