Survey of the experimental investigations carried out on the IVG-1 reactor in the period from 1972 to 1994

The survey of experiential investigations carried out on the IVG-1 reactor on program of carrying out of high-temperature and gas cooled space reactors in the period from1971 to 1988 and after the reconstruction in the period from 1990 to 1994 is given in the paper. IVG-1 reactor is research high-temperature gas cooled tank nuclear reactor of channel type on thermal neutrons with light water moderator and beryllium reflector of neutrons. Test fuel assemblies are placed within reactor core cells and its are cooled by gas coolant. It is possible the various fuel assemblies are tested in the reactor simultaneously. In the center of the reactor core the loop channel with diameter 164 mm is placed. During 1975-1988 in the reactor have been tested 4 fuel assemblies sets for nuclear rocket engines. A lot of technologic, constructive, and scientific and research works were carryied out on the rector IVG-1 by the Russian Scientific Centre Kurchatov Institute, the Physics and Energy Institute, the Scientific Production Corporation Luch and other institutions of Russia. The scientific and technical results were riched during test process, in particular the process possibility of fuel assemblies of nuclear rocket engines during 4000 secunds for medium specific power energy deposition in fuel elements equal to 20-25 kW/sm and hydrogen temperature up to 3100 K. The reactor IVG-1 is universal tool for carrying out of a lot of different investigations. 4 figs