Fast Breeder Reactor (FBR) – Complete Notes for UPSC/State PSC exams

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A Fast Breeder Reactor (FBR) is an advanced type of nuclear reactor that produces more fissile material than it consumes. It uses fast neutrons (without moderators) to convert fertile material into usable nuclear fuel.

  • Key Idea: β€œBreeds fuel while generating energy.”
fast breeder reactor
  • Fuel Used: Plutonium-239 (fissile material)
  • Fertile Material: Uranium-238 or Thorium-232
  • No Moderator: Unlike thermal reactors, FBR uses fast neutrons
  • Coolant: Usually liquid sodium (excellent heat conductor)

Process:

  • Fast neutrons cause fission of plutonium β†’ energy released
  • Extra neutrons convert U-238 β†’ Plutonium-239
  • Newly formed plutonium acts as fresh fuel

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