UCOR crews working at the Y-12 Alpha-4 facility are getting closer to declaring the building cold and dark. Workers are completing 900 secondary electrical isolations and 120 mechanical isolations.
In addition to the cold and dark work, crews are working toward a plan to install life safety measures to mitigate the hazard of falling debris from damaged roof panels. Alpha-4 has roughly 410 damaged roof panels that are causing the roof to leak. That leakage in turn is causing the roof panels to spall concrete, which creates overhead hazards in some areas of the facility. Repairing those roof panels will not only stop the leaks but also increase the lifespan of the roof for another 10 years to carry the project through deactivation.
The four-story, 561,000-square-foot building covers a 13-acre footprint. Built in the mid-1940s, the facility was initially used for uranium separation.
