Japan Atomic Power Company said its Tsuruga nuclear plant leaked a small amount of radiation on Sunday, 08 May 2011.  But this is not the first time.

On 02 May radiation was detected outside the reactors.  JAPCo officials think the radiation leak is coming from the cooling water for the fuel rods. They are shutting down the plant to inspect.

Tsuruga nuke plant is in Fukui Prefecture, directly west of Tokyo.