UPDATE 1-Calif. nukes take precautions after Japan tsunami
* Precautions are routine
* California nukes operating normally (Adds NRC comments, San Onofre plant)
NEW YORK, March 11 (Reuters) - PG&E Corp (PCG.N) declared an "unusual event" at the Diablo Canyon nuclear power plant in California due to a tsunami warning, which is a normal operating procedure, a spokesman at the NRC told Reuters Friday.
The tsunami warning followed the massive earthquake and tsunami off the coast of Japan.
NRC spokesman Scott Burnell said there was nothing wrong with the plant, but a tsunami warning is something that requires the plant to issue an unusual event.
The same thing would happen if, for instance, there was a twister in the general area or an earthquake in Mexico. It merely puts plant workers on alert to prepare for the unusual.
Both reactors at Diablo Canyon were operating normally and at full capacity.
Burnell said the reactors were designed to deal with the big wave expected to reach California later Friday.
The NRC also said Edison International's (EIX.N) San Onofre nuclear plant was monitoring the tsunami but was only under a tsunami watch.
Diablo is located in the middle of the Californian coast, about halfway between Los Angeles and San Francisco.
San Onofre is on the Southern California coast between Los Angeles and San Diego. (Reporting by Scott DiSavino; Editing by John Picinich)