Nuclear fuel rod for fast reactor

摘要

A nuclear fuel rod for a fast reactor is provided, in which a reactor core of the fast reactor can be designed compact-sized by reducing the length of the nuclear fuel rod to be smaller than the length of a conventional one. The nuclear fuel rod for a fast reactor includes a tubular fuel materials comprising a hollow portion formed therein, a tubular inner pipe inserted into the hollow portion of the tubular fuel materials to prevent collapse of the tubular fuel materials due to combustion of nuclear fuel, a tubular cladding pipe which surrounds the tubular fuel materials, and a liquid metal, or He gas or vacuum applied in a gap between the tubular fuel materials and the tubular cladding pipe, and the tubular inner pipe includes a collecting space formed therein to collect fission products such as fission gas which are generated due to combustion of the nuclear fuel.

主权项

1. A nuclear fuel rod for a fast reactor, comprising:
tubular fuel materials comprising a hollow portion formed therein; a tubular inner pipe inserted into the hollow portion of the tubular fuel materials to prevent collapse of the tubular fuel materials due to combustion of nuclear fuel; a tubular cladding pipe which surrounds the tubular fuel materials; and a liquid metal charged in a gap between the tubular fuel materials and the tubular cladding pipe, wherein the tubular inner pipe comprises a collecting space formed therein to collect fission products which are generated due to combustion of the nuclear fuel, wherein the tubular cladding pipe is formed from stainless steel, wherein the tubular inner pipe is formed from molybdenum (Mo), tungsten (W), niobium (Nb), or tantalum (Ta).