Download or read book Fossil Fuel Power Plant Unit - Plant Demand Development, Drum Type written by ANSI/ISA Staff and published by . This book was released on 1993-01-01 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addresses 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 & unit megawatt/steam flow control as applicable. Addresses: (1) a single boiler supplying a single turbine, typical of an electric utility power plant and (2) a single or multiple boiler supplying a common distribution header, typical of an industrial power plant. Specifically excluded are: dispatch control; turbine/generator control (other than turbine demand); combustion controls (covered by ISA-S77.41); steam distribution control systems; economic loading of boilers; & fluidized bed boilers.