FBR

The fast breeder or fast breeder reactor (FBR) is a fast neutron reactor designed to breed fuel by producing more fissile material than it consumes. The FBR is one possible type of breeder reactor.

The reactors are used in nuclear power plants to produce nuclear power and nuclear fuel.

As of 2006, all large-scale FBR power stations have been liquid metal fast reactors (LMFBR) cooled by liquid sodium. These have been of one of two designs:

• Loop type, in which the primary coolant is circulated through primary heat exchangers external to the reactor tank (but within the biological shield owing to the presence of radioactive sodium-24 in the primary coolant).
• Pool type, in which the primary heat exchangers and circulators are immersed in the reactor tank.