WINTERSBURG, Ariz. -- Palo Verde Nuclear Generating Station engineers are studying how to repair a tiny leak of water from the reactor vessel of one of the plant's three units.
Officials said the situation doesn't represent a public health threat.
Plant spokesman Alan Bunnell said evidence of the leak consisted of residue around a pipe. That pipe is on the outside of the bottom of the reactor vessel that normally holds the unit's radioactive fuel.
Bunnell and a federal inspector said the leak was discovered during an inspection after the unit shut down Oct. 5 for refueling. And
Bunnell said operators believe the leak resulted from a tiny crack in the welding that connects the pipe to the reactor vessel.
He said repairs could extend the scheduled 30-day outage by 30 more days.
The plant is located about 45 miles west of downtown Phoenix.