Answer / bhola shnaker

there are 2 to 6 numbers of safety valves (SVs) on the boiler.
Around 2 Nos on Drum, of one high and one low setpoint.
Around 2 Nos on Superheater Steam Line of one high and one low setpoint.(but less then Drum SV setpoint, to avoid starvation of SH main steam line)
around 2 Nos on reheater line (if reheater is provided)
Apart from it 1 No of EMRV on the HP superheater line, setpoints below that of Safety valves of the lines.

Also we have Relief valves on he HP econimiser, which acts as a Over protection valve (against Pressure)

Remember SVs are Differnt from Relief valves, as RVs are used on liquid whereas SVs are used on Steam line.

Answer / arun

Totally 9 SV are There
Drum - 3 ( left side-1 , right side-2 )
SH Outlet( MS Line ) - 2
RH Inlet - 1
RH Outlet - 3

This is for BHEL 210MW Boiler

Answer / powerplant.calculations

Boiler interlocks:
1-High & low drum level trip
2-High furnace draught trip
3-Safety valve
4-Boiler explosion vents

Also refer following link to get more information on Boilers
https://www.powerplantandcalculations.com/2020/06/why-how-these-in-boilers.html

Answer / pandian

only 6 safety valves used in reheater boilers normally small capacity boiler used 4 safety valves

What is surging in a centrifugal compressor ? How it occur's ? How is antisurging done ?

0 Answers   RasGas,

---

What is A.T.T.?

4 Answers  

---

What is indipendant power plant

4 Answers   TVS,

---

what is the condition of transformer parallel operation ?

3 Answers   BEDL,

---

how to differentiate between "ALL fuel lost" and "All Fuel Lost" in Boiler MFT condition?

0 Answers  

---

---

What will happen if the Air Preheater is placed before the Economiser?

6 Answers   Bhel, KSPL, Tata Power,

---

What is the use of Hydraulic Coupling in-between BFP pump & BFP Motor?

1 Answers   Lanco, XYZ,

---

what are the steps of syncronizing the generator with an infinite grid?

3 Answers   Genco, Orient,

---

.What is drip and drain.

2 Answers   NPTI,

---

63.5 ohm NGR is connected with our gas engine genrator running at 500 rpm, 50 hz and synched with WAPDA at 6.3 KV bus voltages, 2500A and 25KA(1 sec). can some one give me proper calculations how it comes 63.5ohm?????

2 Answers   UET,

---

LAPT working in alternator / generator

0 Answers   Power Plant,

---

why drum level is increased when one of the running coal elevations are suddenly tripped?

6 Answers   APGenco, Vedanta,

---