The scope of this standard addresses the major steam temperature control subsystems in boilers with steaming capacities of 200@000 lb/hr (25 kg/s) or greater. These subsystems include@ but are not limited to@ superheat temperature control and reheat temperature control. Specifically excluded from consideration are turbine bypass control@ motor control logic@ combustion control@ sootblower control@ and controls associated with fluidized bed- and stoker-fired furnace combustion units.
ISA 77.44.01-2000 history
2007ISA 77.44.01-2007 Fossil Fuel Power Plant - Steam Temperature Controls
2000ISA 77.44.01-2000 Fossil Fuel Power Plant Steam Temperature Control System Drum Type