Answer / 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

Answer / ch amir islam

dear infact numbers of loops eitherr thz r open or close
depends on the required system & process.any how these
loops are used on demand of process.as relitively ur
question in which kind of system u want to ask about
COMBINE CYCLE POWER PLANT or OPEN CYCLE POWER PLANTS.open
loops depends on the system reliability if u want to check
morer parameters on ur HMI or at CONTROL DEVICE

1- Explain about HPM 2- What is the FSC and explain the configuration of FSC 3- explain the complete loop of vibration, how it works (field to control room) 4- What is the use of proxymitter? 5- During job your partner effected with H2S then what you have to do. 6- what type of gland packing uses when valve glind is leaking.

0 Answers  

---

What are the key components of control loop?

1 Answers  

---

how many types of sensor in instrumentation

3 Answers   SRACO,

---

How much Resistance Show by RTD(PT100) when it is installed in process(Consider Process Fluid temp 29 Deg C)?

5 Answers  

---

How to convert 0-2500mmH2o into kg/hr? Or how to convert mmH2O into kg/hr,t/hr etc

2 Answers  

---

---

I want to know if flowrate increases in 16' pipe line what will happen to upstream pressure and why?

1 Answers  

---

i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com

0 Answers  

---

how can calibrate pressure transmeeter in the feild ?

1 Answers  

---

My question may be very basic or childish but this question still persists in me, someone plz help me 1.why do we go for differential equations to analyze a system? 2.why do we solve it using matrices, is there any specific reason for using matrices other than the stories like it is simple,faster etc.

2 Answers  

---

can any one tell leakage class in control valve depend on which parameter and there is any specific table or chart for selection of valve leakage class

2 Answers  

---

What is live zero and dead zero

2 Answers  

---

WHAT IS ANNUBAR?

7 Answers  

---