PACIFIC GAS & ELECTRIC CO

Incident Narrative

ON JULY 22, 2018 AT 0831 HOURS, PG&E WAS NOTIFIED OF A SERVICE LINE RUPTURE AT A PARKING LOT AT 9100 FOOTHILLS BLVD IN ROSEVILLE. THE ACTUAL SERVICE LINE THAT RUPTURED WAS 8000 FOOTHILLS BLVD. PG&E'S GAS SERVICE REPRESENTATIVE ARRIVED ON-SITE AT 0853 HOURS. PG&E'S CREW STOPPED THE FLOW OF GAS BY SHUTTING IN THE STATION AT 1033 HOURS. THE AREA WAS UNCOVERED AND DETERMINED THAT THE 4"" PLASTIC SERVICE HAD RUPTURED FROM A POTENTIAL MAOP EXCEEDANCE. THERE WAS NO PRESSURE MONITORING/RECORDING ON THIS LINE, THEREFORE THE EXACT PRESSURE REACHED AT THE TIME OF THE RUPTURE IS UNKNOWN. THE CAUSE OF THE OVERPRESSURE EVENT WAS A MALFUNCTION OF THE CONTROL EQUIPMENT. ONE CUSTOMER'S GAS SERVICE WAS IMPACTED. THE CUSTOMER'S GAS SERVICE WAS RESTORED USING COMPRESSED NATURAL GAS (CNG) PORTABLE TANKS ON 7/23/18 AT 0700 HOURS. THE RUPTURED SERVICE PIPE IS PLANNED TO BE DEACTIVATED, AND A NEW SERVICE IS TO BE INSTALLED FROM AN EXISTING DISTRIBUTION MAIN. CONSTRUCTION IS PENDING. THERE WERE NO INJURIES, FATALITIES OR IGNITION ASSOCIATED WITH THIS INCIDENT. FIRE DEPARTMENT WAS REPORTED ON-SITE. THIS INCIDENT WAS REPORTED TO THE CPUC DUE TO A MAOP EXCEEDANCE EVENT, WHICH WAS DETERMINED ON 7/22/18 AT 1748 HOURS. ON 7/24/18 AT 1120 HOURS, IT WAS DETERMINED THAT REPAIR COSTS WOULD EXCEED $50K. ON 7/24/18 AT 1134 HOURS, THIS INCIDENT WAS REPORTED TO THE DOT DUE TO THE $50K CRITERIA. GAS EQUIPMENT AFFECTED