Holtec International says efforts to restart the Palisades Nuclear Power Plant in Covert Township are now entering the final milestone phase, with major repair and inspection work largely complete. “One of our most recent major milestones was we put the reactor head back onto the reactor,” Culp said. “So after the repair work was completed, we lifted the 250,000 pound reactor head, placed it back on the reactor vessel. What we are doing now is we’re preparing the entire primary system, which includes the reactor itself, for system passivation. “Once we get through system passivation, we’ll start going through our plant restart modes.