This code shall apply to single burner boilers, multiple burner boilers, stokers, and atmospheric fluidized-bed boilers with a fuel input rating of 3.7 MWt (12.5 million Btu/hr) or greater, to pulverized fuel systems, to fired or unfired steam generators used to recover heat from combustion turbines [heat recovery steam generators (HRSGs)], and to other combustion turbine exhaust systems.
NFPA 85-2007 history
1970NFPA 85-2023 NFPA 85 Boiler and Combustion Systems Hazards Code, 2019 edition
2015NFPA 85-2015 Boiler and Combustion Systems Hazards Code (Effective Date: 12/1/2014; ALERT: THIS STANDARD HAS BEEN MODIFIED BY A TIA OR ERRATA)
2011NFPA 85-2011 Boiler and Combustion Systems Hazards Code Effective Date: 1/3/2011