Reactor general
1. What are V1 and V2? How they are connected? What is the harm in opening F/M
vault door during reactor operation?
The reactor building is divided into two areas. They are V1 and V2.
V1 – Dry volume area.
V2 – Wet volume area.
V1 area includes F/M vault, boiler room, and entire dome area. Rest of the areas in
the reactor building is V2 area. V1 and V2 are connected by vent shaft through
suppression pool.
F/M vault is a V1 area and F/M maintenance bay is a V2 area. Usually when there is
an accident in F/M vault the pressure is relieved through boiler room through
suppression pool and the uncondensed gases to V2 area. When the reactor is in
operation and if we open the F/M vault door, suppose of there is an accident in F/M
vault the pressure released directly goes to F/M maintenance area, which is a V2
area. Thus pressurizing the entire building.
2. What is the purpose of inlet manifold inside calandria? What is the material used for
that?
The purpose of inlet manifold is to introduce heavy water to the calandria with low
velocity to avoid mixing. That is stratified flow of D2O is obtained b inlet manifold.
Thus the temperature is kept minimum. It is made of zircalloy.
3. Why bi-directional flow is chosen for PHT system?
Bi-directional flow is chosen for PHT system because,
a. Uniform temperature gradient is facilitated so there will be no differential thermal
expansion.
b. It facilitates fuelling even when the reactor is working, which facilitates uniform
neutron flux and this intern gives rise to maximum fuel burns up.
4. What is the purpose of end-shield?
The purposes of end-shield are,
a. To permit access to F/M vault during shut down.
b. To provide tight clamping for fuelling machines.
c. To support the calandria tubes and also system.
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1. What are V1 and V2? How they are connected? What is the harm in opening F/M
vault door during reactor operation?
The reactor building is divided into two areas. They are V1 and V2.
V1 – Dry volume area.
V2 – Wet volume area.
V1 area includes F/M vault, boiler room, and entire dome area. Rest of the areas in
the reactor building is V2 area. V1 and V2 are connected by vent shaft through
suppression pool.
F/M vault is a V1 area and F/M maintenance bay is a V2 area. Usually when there is
an accident in F/M vault the pressure is relieved through boiler room through
suppression pool and the uncondensed gases to V2 area. When the reactor is in
operation and if we open the F/M vault door, suppose of there is an accident in F/M
vault the pressure released directly goes to F/M maintenance area, which is a V2
area. Thus pressurizing the entire building.
2. What is the purpose of inlet manifold inside calandria? What is the material used for
that?
The purpose of inlet manifold is to introduce heavy water to the calandria with low
velocity to avoid mixing. That is stratified flow of D2O is obtained b inlet manifold.
Thus the temperature is kept minimum. It is made of zircalloy.
Bi-directional flow is chosen for PHT system because,
a. Uniform temperature gradient is facilitated so there will be no differential thermal
expansion.
b. It facilitates fuelling even when the reactor is working, which facilitates uniform
neutron flux and this intern gives rise to maximum fuel burns up.
4. What is the purpose of end-shield?
The purposes of end-shield are,
a. To permit access to F/M vault during shut down.
b. To provide tight clamping for fuelling machines.
c. To support the calandria tubes and also system.
https://www.youtube.com/channel/UC4_D50vMu1wbQrPaLFYo6Eg https://www.youtube.com/channel/UC4_D50vMu1wbQrPaLFYo6Eg RRB JE, SSC AE/JE UPSSSC JE, SSC JE, CIVIL ENGINEERING MCQs, ELECTICAL ENGINEERING MCQs, preavious year quesion papers, dmrc, lmrc, drdo,rrb ntpc, ntpc, pgcil, dsssb, states board, GATE IES EE, ESE, ECE, ME, CE, IT & CS EXAM MATERIALS & OLD PAPERS Electrical Engineering https://t.me/pravendrarajpoot Daily news & current affairs in hindi & english fully updated Daily current affairs https://t.me/newsdailypkr Engineering Discussion group for your upcoming exams, you can ask your any query regarding your problem,๐๐๐ https://t.me/joinchat/JObxeA7n6S4qvnegrGhTgA PKR ELECTRICAL ENGINEERING I am sure this is the best place for you guys subscribe and get success IF YOU WANT TO JOIN ME ON TELEGRAM FOR PDF @newsdailypkr AE/JE EE, ESE, ECE, ME, CE, IT & CS EXAM MATERIALS & OLD PAPERS Electrical Engineering https://t.me/pravendrarajpoot facebook page:- Pravendra Kumar Rajpoot https://t.me/newsdailypkr https://chat.whatsapp.com/5AS7dNFTP4H4vVsiWsqHrT https://t.me/srk50 https://t.me/pravendrarajpoot https://t.me/joinchat/JObxeA7n6S4qvnegrGhTgA https://t.me/pravendrarajpoot Daily news & current affairs in hindi & english fully updated Daily current affairs https://t.me/newsdailypkr Engineering Discussion group for your upcoming exams, you can ask your any query regarding your problem,๐๐๐ https://t.me/joinchat/JObxeA7n6S4qvnegrGhTgA PKR ELECTRICAL ENGINEERING I am sure this is the best place for you guys subscribe and get success IF YOU WANT TO JOIN ME ON TELEGRAM FOR PDF @newsdailypkr AE/JE EE, ESE, ECE, ME, CE, IT & CS EXAM MATERIALS & OLD PAPERS Electrical Engineering https://t.me/pravendrarajpoot facebook page:- Pravendra Kumar Rajpoot https://t.me/newsdailypkr https://chat.whatsapp.com/5AS7dNFTP4H4vVsiWsqHrT https://t.me/srk50 https://t.me/pravendrarajpoot https://t.me/joinchat/JObxeA7n6S4qvnegrGhTgA
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