So, I built ten washers side by side in order to get my prisoners to work. While dealing with a fight, I come back to find 5 workers dead and all the washers 100% damaged. I send some workers to repair, only to see 2 more die after an explosion-like sound. I dump five of them, thinking maybe the bug is that they are touching each other or something. Workers can't repair the 5 washers left, more explosion sounds, 3 more dead workers. I ended up just scrapping the washers altogether.