Attainment of Criticality of Fast Breeder Reactor “Joyo”

A commemorative postage stamp on the Attainment of Criticality of the Fast Breeder Reactor “Joyo” :

1303 Fast Breeder Reactor, Central Part [Japan Stamp 1977]Issued by Japan

Issued on Jun 6, 1977

Issued for : A postage stamp was brought out to commemorate the attainment of criticality of the first Japanese experimental fast breeder reactor named “Joyo” at Ōarai, Ibaragi prefecture. The construction of “Joyo” was started in 1970.

It is the first time that Japan has succeeded in this big development project entirely with its own technologies.

Design : Illust of fast breeder reactor Joyo’s core.

Designer : Mr. Hitoshi Otsuka

Colour : Multicolour

Type : Stamp, Postal Used

Denomination : 50 Yen

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