This code applies to the following:
(1) Single burner boilers, multiple burner boilers, stokers,and atmospheric fuidized bed boilers with a fuel input rating of 3.7 MW t (12.5 million Btu/hr) or greater
(2) Pulverized fuel systems at any heat input rate
(3) Fired or unfred steam generators used to recover heat from combustion turbines [heat recovery steam genera‐tors (HRSGs)] and other combustion turbine exhaust systems at any heat input rate
