Fast Breeder Test Reactor

Construction started in 1972 ad it first reached criticality in October 1985 (39 years ago) (1985-10),[2] making India the seventh nation to have the technology to build and operate a breeder reactor after United States, UK, France, Japan, Germany, and Russia.

The initial nuclear fuel core used in the FBTR consisted of approximately 50 kg (110 lb) of weapons-grade plutonium.

The FBTR has rarely operated at its designed capacity and had to be shut down between 1987 and 1989 due to technical problems.

In September 2002, fuel burn-up in the FBTR for the first time reached the 100,000 megawatt-days per metric ton uranium (MWd/MTU) mark.

[2] Using the experience gained from the operation of the FBTR, a 500 MWe Prototype Fast Breeder Reactor (PFBR) is in advanced stage of construction at Kalpakkam.