A contract worker from Virginia was found dead Tuesday in the reactor building at Cooper Nuclear Station near Brownville, Neb.
Nemaha County Sheriff Brent Lottman identified the man as Ronald Nurney, 66, of Smithfield, Va. He was a radiation protection worker.
An autopsy was planned for Wednesday, but the death was believed to be the result of natural causes, Lottman said.
Plant personnel found Nurney between 7:30 and 8 a.m. Control room managers declared a medical emergency, and plant emergency medical technicians responded.
Cooper officials reported the incident to the Nuclear Regulatory Commission and the Occupational Safety and Health Administration, as required, and called in the sheriff’s office to investigate. The plant is owned and operated by Nebraska Public Power District.