Answer Posted / r.murugan

important closed loop in boiler side
1.Drum level control (single element control and three
element control)
single element control : only drum level
three element control : steam flow, feedwater flow, drumlevel

2.boilerfeedpump scope control,super heater spray
temparature control,hp heater level control,lp heater level
control,presure reducing control,dearator level control
o2 master control,

turbine side control: speed control (during start up),load
control,intial pressure control,exhaust temp control, load
drop control,oiltemp control,

open loop control based on unit capacity

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