The reactor of the Fermi 2 nuclear plant in Monroe County has been shut down due to an equipment problem.
The Monroe Evening News reports crews idled the plant around 1:30 p.m. Monday when its steam condenser lost the vacuum that pulls steam across a series of cooling tubes.
The condenser turns steam back into water after it's used to spin the plant's turbines.
Plant spokesman Guy Cerullo says Fermi 2 "is in a safe, stable condition."
Cerullo says plant operator DTE Energy is investigating the reason for the pressure loss, and he didn't know when Fermi 2 would be back in operation.
He tells The Blade of Toledo, Ohio, that DTE "will operate once" it's "sure everything is in good shape" and it "can safely operate the plant."