Another nuclear reactor has been damaged by corrosion.
Leaking coolant caused minor corrosion to a reactor at the
Tennessee Valley Authority's Sequoyah nuclear plant near
Chattanooga, Tenn., but was never a safety problem, a Nuclear
Regulatory Commission spokesman said.
More severe damage caused by boric acid corrosion was reported
last March at Davis-Besse, the nuclear plant in Perry that is owned
by Akron-based FirstEnergy Corp.
The damage at the Sequoyah plant's Unit 2 reactor was discovered
after an unrelated shutdown on Dec. 26, according to the NRC.
``It is just some residue with slight corrosion, but they did
find it and they didn't find any evidence of serious problems
elsewhere,'' said Ken Clark, an Atlanta region spokesman for the
TVA spokesman John Moulton said the corrosion caused a ``slight
indentation on the reactor vessel head that did not require
``NRC was notified, but there was no threat to the health and
safety of employees and the public,'' Moulton said Tuesday. He said
the leak was repaired and the reactor was returned to service.
Last year, workers at the Davis-Besse plant found a
pineapple-sized hole etched through a reactor's 6-inch-thick steel
lid. Only a thin liner prevented radioactive coolant from spilling