Comment Umm... (Score 2) 181
Thats the whole story? I was sort of expecting more. Well, to the final question of that rather short article. It was most likely the area where they kept their spent fuel bundles. I know in some nuclear power plants, the spent fuel bundles have to be kept in a pool of water for a number of years until their half life is met, and they can be transfered to a dry storage facility. Normally the "pool" is not guarded or locked due to personel constantly going in and out, but there is radiation checks that are done upon exiting the area, also you wear a device for monitoring your radiation dose.
As for the blue glow, you can read all about it on wiki