Security equipment failure prompted 'unusual event'
Security equipment issues triggered a "notification of unusual event" at the Prairie Island nuclear plant Wednesday. The declaration was terminated after about three and a half hours.
Prairie Island plant officials made the declaration around 2:18 p.m. Oct. 31 after some security equipment temporarily failed, according to Xcel Energy, which owns the plant. Plant conditions were assessed and the declaration ended just before 6 p.m.