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Power Plant Instrumentation and Control Handbook by Ajay Kumar Debnath, Swapan Basu

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Chapter III

Plant P&ID Discussions

Abstract

The entire system process is brought before the engineer with symbols and process and piping details. All major equipment and their relative disposition in the process with important parameter monitoring and control with required redundancies are based on criticality. The main steam system from boiler to turbine including HP bypass is covered in this chapter. In HRH and CRH systems LP bypass systems are also covered. Regenerative heaters with extraction steam heating, condensate, and feed water flow paths with options for BFP and its drive are discovered. In heater vents and drains normal and emergency heater level controls are mentioned. Pulverizer instrumentation, boiler firing, air and flue gas paths ...

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