Nuclear Reactors : Classification

Classification of Nuclear Reactors

Nuclear Reactors, specifically fission reacors, are classified by several methods, a brief outline of these classification schemes is given below.

Classification by use

Research reactors : Typically reactors used for research and training, materials testing, or the production of radioisotopes for medicine and industry. These are much smaller than power reactors or those propelling ships, and many are on university campuses. There are about 280 such reactors operating, in 56 countries. Some operate with high-enriched uranium fuel, and international efforts are underway to substitute low-enriched fuel.
Production reactors
Power reactors
Propulsion reactors

Classification by moderator material

Graphite moderated reactors
water moderated reactors
  • Light water moderated reactors (LWRs)
  • Heavy Water moderated reactors
Classification by coolant

Gas cooled reactor
Liquid metal cooled reactor
Water cooled reactor
  • Pressure water reactor
  • Boiling water reactor
Classification by type of nuclear reaction

Fast Reactors
Thermal reactors
 
Classification by role in the fuel cycle

Breeder reactors
burner reactors
 
Classification by Generation

Generation II reactor
Generation III reactor
Generation IV reactor
 
Classification by phase of fuel

Solid fueled
Fluid fueled
Gas Fueled