Manufacturing, Manufacturing Plant Sprinkler system contains fire at manufacturing plant (Naugatuck, CT) November 8, 2012 viking210 The cause of a fire that broke out at a manufacturer of industrial hardware, security products and metal castings appears to have been a radiator malfunction, Fire Chief Ken Hanks said. Firefighters found that the sprinkler system had contained a small fire to the front entrance near a radiator, Hanks said. Nobody was injured.