CHEVRON PIPE LINE CO — Gas transmission and gathering — incident on 2018-10-17

Gas transmission and gathering incident in BAY POINT, CONTRA COSTA County, CA. Reported cause: OTHER OUTSIDE FORCE DAMAGE. Reported consequences: 0 fatalities, 0 injuries, 7.1 NATURAL GAS released, $327,442 reported property damage. Operator-reported incident data submitted to PHMSA, generally within 30 days. Records may be supplemented or corrected and do not represent final agency causal findings.

Report number: 20180113.

Operator ID: 2731.

Reported incident date: 10/17/2018 19:47.

Location detail: MILEPOST 29.2

Cause detail: ELECTRICAL ARCING FROM OTHER EQUIPMENT OR FACILITY

Cause detail: 10/17/2018 17:48- FIRE DEPARTMENT DISPATCHED TO FIRE ON RIGHT OF WAY(ROW) DUE TO DOWNED POWERLINE 18:30- FIRE DEPARTMENT NOTIFIED CONTROL CENTER OF FIRE ON ROW 18:37- CONTROL CENTER NOTIFIED FIELD TEAM MEMBER ABOUT FIRE ON ROW MILEPOST 29.2 18:39- FIELD TEAM MEMBER NOTIFIED TEAM LEADER OF FIRE 19:26- FIELD TEAM MEMBER ARRIVES ON SITE AND ESTABLISHES UNIFIED COMMAND WITH FIRE DEPARTMENT 19:31- UPDATE TO TEAM LEADER OF CURRENT SITUATION 19:47- FIELD TEAM MEMBER NOTIFIES CONTROL HE HEARS HISSING FROM PIPELINE 19:48- CONTROL CENTER BLOCKED IN PIPELINE(SHUTDOWN) 20:20- TEAM LEADER ON SITE 20:34- FIRE DEPARTMENT ESTABLISHES HOT ZONE WITH NO ENTRY 21:26- COMMAND POST SET UP 22:08- LAW ENFORCEMENT BEGINS EVACUATIONS OF HOMES 10/18/2018 15:04- FIRE CONFIRMED OUT AND EVACUATION IS LIFTED 10/19/2018 NITROGEN PURGE OF PIPELINE LOS MEDANOS TO AVON WORK CONTINUES TO FIX VALVE. 10/25/2018 FIRST DAY OF RESTART OF PIPELINE 10/26/2018 APPROXIMATELY 21:10 LINE IS FULLY OPERATIONAL AND RUNNING IT WAS CONFIRMED THE SOURCE OF THE FAILURE ON THE PIPELINE WAS ARCING FROM THE VALVE BOX INTO THE PIPELINE CAUSED BY A DOWNED POWERLINE ACROSS THE VALVE BOX.

PHMSA trend classification: significant incident, not serious.

PHMSA standardized cause: OTHER OUTSIDE FORCE DAMAGE — ELECTRICAL ARCING.

PHMSA indexed costs: $430,307 reported total cost, $206,859.738 in 1984 dollars, $506,128.225 in current-year dollars.

PHMSA trend flags, standardized causes, and indexed costs are analytical fields added to operator-reported incident data. They do not represent final agency causal findings.