nuclear energy,nuclear reactor

3. 1.On the basis of neutron energies:
Intermediate reactors:
Reactors in which the
velocity of neutrons is kept
between the limits of fast
and slow reactors.
Fast reactors:
In these reactors
Fast fission is caused by
high energy neutrons.
Slow reactors:
If in a reactor fission
process is maintained
due to slow neutrons
capture, the reactor is
known as slow reactor.

4. 2.On the basis of Fuel state:
LIQUID FUEL GAS FUELSOLID FUEL

5. 3.On the basis of fuel material:
a. Natural uranium with U-235 contents (occurs in nature)
b. Enriched uranium with more than 0.71% of U-235 (man made)
c. Pu-239,Pu-241 or Pu-239 (man made)
d. U-233 (man made)

6. 1.Water (H₂o) moderated reactors
2.Heavy water (D₂o) reactors
3.Graphite moderated reactors
4.Beryllium or beryllium oxide moderated reactors
5.Hydrocarbon or hydrides moderated reactors

7.  Pressurised Water Reactor(PWR)-It is a light water cooled and
moderated reactor. It uses enriched uranium as fuel.
 Boiling water reactor(BWR)-In this type of reactor, enriched
uranium is used as fuel and water is used as coolant, and
moderator.
 CANDU(Canadian-deuterium-uranium)reactor:
It uses heavy water (99.8% D₂O) as moderator and coolant as well. It
differs from light water reactor as the later uses the same water as coolant and
moderator both while in CANDU reactor moderator and coolant are kept separate.

8. Gas-cooled reactor:
In such type of reactor, the coolant used can be air, hydrogen, helium
or carbon dioxide. The moderator used is graphite.
There are two types of gas cooled reactors:
1. The gas cooled graphite moderator reactor(GCGM):uses natural
uranium fuel and graphite as moderator.
2. The high temperature gas cooled reactor(HTGC):uses enriched
uranium carbide mixed with thorium carbide as fuel and graphite as
moderator.
Sodium –graphite reactor(SGR) is one of the typical liquid metal reactor in which
sodium works as coolant and graphite works as moderator.

9. 1)Research reactors-to produce neutron for research work.
2)Power reactor- to produce heat
3)Breeder reactor- to produce fissionable material (i.e..U-238 & Th-
232 to Pu-239 & U-233) besides power production.
4)Production rector- to produce isotopes.

10. i. Cubical
ii.Cylindrical
iii.Octagonal
iv.Spherical
v.Slab
vi.Annulus

11.  file:///C:/Users/Angel%20Astha/Downloads/Types%20of%20Nuclear%20Reactors.htm
 file:///C:/Users/Angel%20Astha/Downloads/Nuclear%20Reactors%20%20%20Nuclear%20
Power%20Plant%20%20%20Nuclear%20Reactor%20Technology.htm
 file:///C:/Users/Angel%20Astha/Downloads/What%20Is%20A%20Nuclear%20Reactor%20.
htm
 Book=Power Plant Engineering(R.K.RAJPUT)
References: