NAC455C.106. “Unfired steam boiler” defined.  


Latest version.
  • “Unfired steam boiler” means an unfired pressure vessel or a system of unfired pressure vessels intended for operation at a pressure in excess of 15 PSIG to produce and control an output of thermal energy. The term includes boilers that heat water with waste heat.

     (Added to NAC by Div. of Industrial Relations by R101-02, eff. 12-15-2004)