sentences:  At the core of the plant are two Fissionator 1952 Slow-Fission Reactors, operating in spite of more than 342 safety violations with an estimated repair bill to bring the plant up to code being in excess of $56 million.Among the more alarming safety violations are emergency exits that are just painted on the wall, cracks in the cooling towers held together by tape, massive amounts of poorly stored toxic waste and dangerously unqualified personnel (mainly Simpson), some of which are not even human, such as a chicken that briefly substituted for Homer, and a duck that was used to pull a cart of toxic waste around.A running gag in earlier seasons was the poor security of the plant, with the outside security booth often going unmanned, but this has changed in recent episodes, with the entrance to the plant being heavily guarded.