Phoenix radio station KTAR reported this morning:
Officials at the Palo Verde Nuclear Generating Station west of Phoenix are investigating what they call an “unusual event” that happened on Saturday afternoon.
The “unusual event” occurred when water caused a junction box to short out inside a containment building for the Unit One reactor.
Jim McDonald of Arizona Public Service Company said …”some water got into a junction box. It shorted out. As a result, we declared a notification of unusual event.”
The event was terminated after about three hours.
More on this when the NRC Event Reports post on Monday.