Oak Ridge leaders upset over shift in some operations away from Y-12, no jobs impacted The National Nuclear Security Administration said it will not impact employment or work scope at the national security complex. Author: Cole Sullivan Updated: 7:03 PM EST February 25, 2021 OAK RIDGE, Tenn. — Oak Ridge city leaders met with representatives from the National Nuclear Security Administration this week to express disappointment over a shift of some production from the Y-12 nuclear weapons facility to a plant in Erwin, Tenn. An NNSA spokesperson said Y-12 would not experience any loss of employment or work scope due to the contract with Nuclear Fuel Services.