Standard

ISA 77.43.01

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Omfang

The scope of this Standard is to address the unit/plant demand development subsystem for boilers with steaming capacities of 200,000 lbs/hr (25 kg/s) or greater. This subsystem includes firing rate demand development, throttle/header pressure control, and unit megawatt/steam flow control as applicable. This Standard will address two types of process applications: a) a single boiler supplying a single turbine, typical of an electric utility power plant; and b) a single boiler or multiple boilers supplying a common distribution 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 minimum requirements for the functional design specifications of unit/plant demand development for control systems for drum-type fossil-fueled power plant boilers.

Dokumentinformasjon

  • Standard fra ISA_AC
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  • Varetype: IS