Answer / krishnakamesh @ j.e.

sdv means shutdown valve
bdv means blow down valve
Both are used in ESD (emergency shutdown) condition.

SDV: ( closed valve)
it was used in plant inlet & outlet places.whenever plant
was partially OR total shutdown condition, at that time
plant was not disturbed from/to another process,closed the
disturbed process through SDV".

BDV : (opened valve)
It was used in sudden flare OR pressurized
condition,relief that pressure( to avoid dangerous
condition) used this valve.

Both are operated with solenoid valve, with electrical supply.

any thing want more refer google

What is voltage regulator?

0 Answers  

---

what is exact time to study dcs and plc cources

0 Answers  

---

List three types Level Switches with their working principles

0 Answers  

---

What is the difference between a double acting and single acting positioner? what type of valves use single acting positioners?

1 Answers   AquaTech, NamPower, Samson Resources,

---

principle of dead weight tester ?

0 Answers  

---

Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,

0 Answers  

---

What is diff between Ingral orifice and simple orifice?where it use?

3 Answers  

---

What is the diffrence between digital signal processing and discrete signal processing?

0 Answers  

---

how to calculate density?

2 Answers  

---

What is the PLC Level & type.

2 Answers   Bhushan Power Steel,

---

What is compensation for flow ? Why we use compensation ? What are the factors of different compensation ? We not use then what problems may happen ?

0 Answers  

---

Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .

0 Answers  

---