Diablo Canyon Nuclear Power Plant
Diablo Canyon is designed to withstand a 7.5 magnitude earthquake from four faults, including the nearby San Andreas and Hosgri faults.[1] Equipped with advanced seismic monitoring and safety systems, the plant is designed to shut down promptly in the event of significant ground motion.
In case you've forgotten, the quake that Japan is reeling from was a 9.0 magnitude quake. Next time someone from PG&E says safety is job one, ask them about San Bruno.