  The main aim of this paper is to solve the technological problems of the TWR
based on the technical concept described in our priority of invention
reference, which makes it impossible, in particular, for the fuel claddings
damaging doses of fast neutrons to excess the ~200 dpa limit. Thus the essence
of the technical concept is to provide a given neutron flux at the fuel
claddings by setting the appropriate speed of the fuel motion relative to the
nuclear burning wave.
  The basic design of the fast uranium-plutonium nuclear traveling-wave reactor
with a softened neutron spectrum is developed, which solves the problem of the
radiation resistance of the fuel claddings material.
