All nuclear operations have been halted at the Y-12 National Security Complex in Oak Ridge, a federal spokesman said Wednesday.
The unprecedented security “stand down” occurred after three activists breached the plant’s high-security area on Saturday and after an internal review by B&W Y-12 and the National Nuclear Security Administration found procedural violations, NNSA spokesman Steven Wyatt said.
“Once we found those, B&W decided it was prudent to stand down operations,” Wyatt said. B&W Y-12 manages and operates Y-12 for the NNSA.




