High radiation triggers alert at Browns Ferry

The Tennessee Valley Authority's Browns Ferry Nuclear Station near Athens, Ala.

The Tennessee Valley Authority activated the lowest of four emergency notifications Wednesday afternoon when high radiation levels were detected in a main steamline at the newest reactor at the Browns Ferry Nuclear Power Plant in Alabama.

TVA detected the high radiation condition around 3:35 p.m., central daylight time, on Wednesday. But the notice of an unusual event was cleared almost immediately. TVA spokesman Jim Hopson said the high radiation levels were quickly lowered to acceptable levels and there was no risk of radiation exposure or other safety problems to the public or plant workers.

TVA lowered the power in the Unit 3 reactor, which was reactivated after a fuel reloading two weeks ago, to about 92 percent power while workers checked for potential problems.

The notice of an unusual event is the lowest of the four emergency notices to the U.S.