An industrial accident at an Arkansas nuclear power plant killed one worker and injured three others on Sunday, but there was no release of nuclear material, authorities and the operator said.
A generator fell as it was being moved out of the turbine building at Entergy Corp's Arkansas Nuclear One plant in Russellville, Entergy said in a statement.
"There was no nuclear release of any kind," said Ed Barham, a spokesman for the Arkansas Health Department.
The injured workers were transported to a hospital, Entergy said.
The plant's Unit 1 was off line for refueling and Unit 2 automatically shut down and there is no danger to the public, it said.
The accident is classified as a unusual event, the lowest of four emergency classifications by the Nuclear Regulatory Commission, Entergy said.