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Reactor Type

ASEAN +3 Nuclear Energy Working-Level Course
by

JJ LEE

on 18 November 2012

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Transcript of Reactor Type

Here is something small... Geographical Distribution of NPPs Key components of Reactor Reactor
Type An Example: 30 So... Lee, Jung-jun
International Training Team, KNPEI
seicou@khnp.co.kr Nuclear Fuel
- Pellet / fuel rod / fuel bundle
- UO2, UO2+PuO2 (MOX) (Neutron) Moderator
- reduce the speed of fast neutrons,
turning them into thermal neutrons
capable of sustaining a nuclear chain
reaction involving uranium-235
- Water(light or H2O, heavy or D2O) : contains H
- Graphite : contains C Coolant
- remove heat from the nuclear reactor core
and transfer it to the secondary cooling system
- Water(light or H2O, heavy or D2O), Na, CO2, He Classification Control Rod
- absorb many neutrons without fissioning themselves
and control the rate of fission of uranium and plutonium
- control reactor power
- B4C, Ag+In+Cd By purpose
- Research reactor
- Power reactor
- Isotope production reactor
- Fuel production reactor By neutron energy
- Fast reactor
- Epithermal / Intermediate reactor
- Thermal reactor By arrangement of fuel and moderator
- Homogeneous reactor
- Heterogeneous reactor By coolant type
- Light water(H2O) reactor (PWR, BWR)
- Heavy water(D2O) reactor (PHWR)
- Liquid metal fast breeder reactor (LMFBR)
- Gas cooled reactor (AGR, HTGR) By moderator type
- Light water reactor (PWR, BWR)
- Heavy water reactor (HWR)
- Graphite moderated reactor By boiling of coolant
- Pressurized water reactor (PWR)
- Boiling water reactor (BWR) Development of NPPs An Example: 30 Pressurized Water Reactor (PWR) Wowing template. Click through in 20 steps. Here is something small... An Example: 30 Boiling Water Reactor (BWR) Nuclear Fuel
- Low enriched UO2 (1.5~3%)
- 750 fuel bundles
Moderator / Coolant
- Light water (H2O )
- Boiling is allowed
Features
- No pressurizer and steam generator
- Control rods enters from the bottom of the core
- High void coefficient and
doppler temperature coefficient
- Recirculation pump Advanced Boiling Water Reactor
(ABWR)
Economic Simplified Boiling Water Reactor
(ESBWR) Nuclear Fuel
- Low enriched UO2 (3~5%)
- 120~150 fuel bundles (about 50~100 tons)
Moderator / Coolant
- Light water (H2O )
Loop : 2 - 4
Hot Leg Temperature : 320~330'c
Three (3) Seperated Cooling System
- Reactor coolant system (primary system)
- Steam / feedwater system (secondary system)
- Condenser cooling system Advanced Power Reactor 1400 (APR1400)
Westinghouse Advanced Passive 1000
(AP1000)
European Pressurized Reactor (EPR) Pressurized Heavy Water Reactor (PHWR) Nuclear Fuel
- Natural UO2 (0.7%)
- 12 fuel bundles per a pressure tube
- 380 pressure tubes, 4,560 fuel bundles
- Calandria: horizontal cylindrical tank
Moderator / Coolant
- Heavy water (D2O)
- Moderator and coolant are Separated
Hot Leg Temperature : ~300'c (~110kg/cm2)
Features
- On-line refueling 5+7= (cc) image by anemoneprojectors on Flickr Gas Cooled Reactor (GCR) Nuclear Fuel
- Natural uranium is usable
Moderator : graphite
Coolant : He or CO2
- Pressurizer exists
Features
- On-line refueling
- doesn't need high pressure vessel
- Bad heat transfer rate of gas;
it needs bigger equipment size Advanced Gas-Cooled Reactor (AGCR)
High Temperature Gas Cooled Reactor (HTGR) Fast Breeder Reactor (FBR) generates more fissile material in fuel than it consumes
- U-238 + n -> Np-239 -> Pu-239
Nuclear Fuel
- UO2+PuO2(MOX)
- Stainless steel cladding
Features : No moderator Gas-cooled Fast Reactor (GFR)
Sodium-cooled Fast Reactor (SFR)
Lead-cooled Fast Reactor (LFR) Learning Objectives Upon completion of this session successfully
Students will be able to :
Explain the development of NPPs.
Explain the classificaion of NPPs.
Explain the main components of the Reactor.
Describe PWR, BWR, PHWR, GCR, and FBR. How many reactor types do you know?
(Discussion with friends is allowed) Fusion Reactor (FR) TOKAMAK
- TO(torodidal: current)+KA(kamepa: container)
+MA(magniyunue: magnetic field)+K(katushuki: coil)
- Started in 1956
- A device using a magnetic field to confine a plasma
International Thermonuclear Experimental Reactor (ITER)
- The world's largest and most advanced TOKAMAK
- started in 2006
- Participants : South Korea, US, EU, India, Japan, China Thank you ! Summary History of NPPs
Classification
PWR
BWR
PHWR
GCR
FBR (cc) photo by medhead on Flickr
Full transcript