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Diablo Canyon Unit 2 Remains Shut Down After Fire Investigation into cause of the Unit 2 transformer fire continues; Unit 1 still operating at full power.

Release Date: August 17, 2008
Contact: PG&E External Communications (415) 973-5930

SAN LUIS OBISPO, CA – Diablo Canyon Power Plant's Unit 2 reactor remains shut down after an early morning fire. The fire, which started shortly after midnight, was caused by a transformer failure in an area east of the plant's turbine building. The fire did not pose any threat to the nuclear reactors at the plant.

Pacific Gas and Electric Company (PG&E) notified county, state and federal authorities of the declaration of an Unusual Event (UE) at the plant at 12:12 a.m. An Unusual Event is declared for an other-than-normal plant related condition that does not require any emergency action by the general public or any government authorities. It is the lowest of four emergency classifications mandated by the Nuclear Regulatory Commission.

Diablo Canyon firefighters extinguished the fire at 12:26 a.m., and the UE was terminated at 2:31 a.m. During the event all plant safety systems operated as designed, automatically bringing Unit 2 to a safe shutdown.

Diablo Canyon personnel are in the process of investigating the cause of the transformer failure and determining the repair plan and schedule.

There was no release of radioactive material to the environment from this event, as indicated by sensitive plant radiation monitors.

As of 2:00 p.m. on August 17, Unit 2 is shut down; Unit 1 continues to operate at 100 percent power.

Diablo Canyon Power Plant provides enough electricity to meet the needs of more than 3 million northern and central California homes, and is located approximately 12 miles southwest of San Luis Obispo, CA, which is about 220 miles south of San Francisco and 200 miles north of Los Angeles.

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