Doryokuro Kakunenryo Kaihatsu Jigyodan

Mitsuru Kambe

Tomihiro Fukada

Shuichi Sasaki

A liquid metal cooled fast breeder reactor which permits a closer installation of a fuel handling mechanism relative to an upper reactor core structure of the reactor. The fuel handling mechanism has a fuel handling body without a housing, and has a rotational driving device on a rotating plug of a shield plug device of a reactor vessel. The fuel handling mechanism has an aseismatic support extending outwardly from the upper reactor core structure. The fuel handling mechanism is supported, at its upper portion, by the rotational driving device, and secured, at its lower protion, by the aseismatic support.

Liquid metal cooled fast breeder reactor

An improvement in a liquid metal mechanical pump which includes a hydrostatic bearing immersed in liquid to rotatably support the lower end of a pump drive shaft and is constructed such that a part of liquid forced out of a diffuser is supplied to the bearing to lubricate it by the liquid. A cylindrical partition wall is disposed around the bearing with a clearance therebetween. The areas inside and outside the partition wall are communicated at a position remote from the diffuser. The partition wall prevents the liquid discharged from the diffuser from being directly supplied to the bearing, thereby reducing thermal shocks to the bearing.

Growing community of inventors

Higashi, Japan

Mitsuru Kambe