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ISA 77.43.01-2014

ISA 77.43.01-2014

$18.20

Fossil Fuel Power Plant Unit/Plant Demand Development – Drum Type

Published By Publication Date Number of Pages
ISA 2014-12-22 32
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Full Description

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 generation demand, boiler demand development, turbine 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) feedwater controls

  • d) steam temperature controls (covered separately by ANSI/ISA-77.44.01, Fossil Fuel Power Plant – Steam Temperature Controls);

  • e) combustion controls (covered separately by ANSI/ISA-77.41.01, Fossil Fuel Power Plant Boiler Combustion Controls);

  • f) steam distribution control systems;

  • g) economic loading of boilers; and

  • h) 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 fossil-fueled power plant boilers.

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ISA 77.43.01-2014
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