The moderator used in fast breeder reactor is:

The moderator used in fast breeder reactor is: Correct Answer None of these

The plutonium-239 breeder reactor is commonly called a fast breeder reactor.

Sodium is used for cooling and heat transfer.

The fast breeder requires a higher enrichment of U-235 than a light-water reactor, typically 15 to 30%.

The reactor fuel is covered by non-fissionable U-238.

No moderator is used in the breeder reactor since fast neutrons are more efficient in transmuting U-238 to Pu-239.

Heavy water is used as a coolant to slow down the neutrons.