The scope of this Standard is to address the unit/plant demanddevelopment subsystem for boilers with steaming capacities of200,000 lbs/hr (25 kg/s) or greater. This subsystem includes firingrate demand development, throttle/header pressure control, and unitmegawatt/steam flow control as applicable.
This Standard will address two types of processapplications:
a) a single boiler supplying a single turbine, typical of anelectric utility power plant; and
b) a single boiler or multiple boilers supplying a commondistribution header, typical of an industrial power plant.
Specifically excluded from consideration are:
a) dispatch control;
b) turbine/generator control (other than turbine demand);
c) combustion controls (covered separately by ANSI/ISA–77.41.01,Fossil Fuel Power Plant Boiler Combustion Controls);
d) steam distribution control systems;
e) economic loading of boilers; and
f) fluidized bed boilers.
Purpose
The purpose of this document is to establish the minimumrequirements for the functional design specifications of unit/plantdemand development for control systems for drum-type fossil-fueledpower plant boilers.
- Edition:
- 02
- Published:
- 01/01/2002
- ANSI:
- ANSI Approved
- Number of Pages:
- 30
- File Size:
- 1 file , 130 KB
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