CLEVELAND -- FirstEnergy Corp. found corrosion
on a nuclear reactor in Pennsylvania last fall, but company
officials said Friday it is unrelated to the serious damage that was
discovered at the Davis-Besse reactor last month.
FirstEnergy spokesman Todd Schneider said that during a routine
inspection in September, the company found a small spot of corrosion
on the reactor head at the Beaver Valley Nuclear Power Station in
Schneider said the company believes the corrosion was caused by a
flange leak in 1989, and that it never posed a safety threat. The
damage was repaired and reported to the Nuclear Regulatory
Commission, Schneider said.
FirstEnergy had shut down its Davis-Besse Nuclear Power Station
near Oak Harbor Feb. 16 for a routine refueling and maintenance
check. During the outage, workers found corrosion in the reactor
head apparently caused by boric acid deposits.
The company found a 4-inch by 5-inch by 6 1/2-inch deep hole in
the Davis-Besse reactor, Schneider said. The corrosion at the Beaver
Valley reactor was less than1/8 inch deep.
A preliminary report shows a crack in a nozzle in the reactor
head at Davis-Besse Nuclear Power Station began at least nine years
The report, posted Monday on the Nuclear Regulatory Commission
Web site, was developed by a team of experts enlisted by Davis-Besse
officials to investigate the cause of corrosion.
Currently, a team of about 50 experts have been recruited from
around the world to come up with a viable solution, and that
solution could be cutting out the damaged area and welding a heavy
piece of stainless steel on top.