On April 7, 2007 at 1330 Pacific Daylight Time (PDT) Columbia Generating Station (
CGS) experienced an electrical fire in the
Reactor Protection System (
RPS) Division 2 equipment room. Currently, reactor level is stable and being controlled with the
feedwater system. Reactor pressure is stable and being controlled with the
turbine bypass valves in automatic. All safety systems are functional and there were no
ECCS system actuations. At this time the plant is stable and the source of the fire was an electrical transformer which feeds the alternate electrical power supply to a Division 2 inverter isolation logic.
Plant operation was not impacted and the plant continues to operate at about 95% power. The first responder on-site extinguished the fire with a hand held fire extinguisher at about 1339 local time. The licensee has informed the NRC Resident Inspector.
- * * UPDATE AT 1758 EDT ON 4/7/07 FROM F. SCHILL TO P. SNYDER * * *
The Emergency Action Level (EAL) entry condition for the Alert was a 'report by plant personnel of visible damage to equipment contained in a safe shutdown building' EAL 9.2.A.1. The equipment damaged was the backup power supply to the inverter. CGS has a fire watch established in the area to watch for reflash.
- * * UPDATE AT 2024 EDT ON 4/7/07 FROM F. SCHILL TO P. SNYDER * * *
The Alert condition was terminated at 1721 PDT based on the fact that no reflash was seen by the fire watch, the extent of the equipment damage is understood and the area is now cool.
Notified: R4DO (Cain),
NRR EO (Haney),
IRD Mgr. (Blount), R4 (Gwynn),
DHS (Akers),
FEMA (Sweetser), USDA (Jimenez),
HHS (Dalziel),
EPA (Natl. Resp. Cntr. - Crews).
