Corrosion at Nuclear Plant Opens Inquiry

Federal regulators are investigating whether the owner of a nuclear plant where acid nearly ate through a 6-inch-thick steel reactor cap had altered records about the damage, the company says.

FirstEnergy Corp. spokesman Todd Schneider said Friday the utility was cooperating with the Nuclear Regulatory Commission but would not provide details of the investigation at the Davis-Besse plant near Toledo.

The plant has been shut down since engineers discovered in March that boric acid had nearly eaten through the steel cap on the reactor vessel. It was the most extensive corrosion found on a U.S. nuclear reactor, and led to a nationwide review of all 69 similar plants.