[en] Automatic translation: Significant events during 1979 were: - Setup of the experiment for the non-destructive testing of the Spiral tubes of the helium / helium heat exchanger - Completion of the experiments to determine the forces of the pebble cluster on the core wall and the core floor on the 1:10 model of the ''star core'' - Development of torsion bar absorbers. Construction and commissioning of the 1: 6 trainer. Continuation of the attempts to optimize the absorber load and the fuel element mixing. Start of construction work for a drive test bench - Completion of the pressure loss measurements as part of the thermodynamic experiments for the core - Development of hot gas lines. Creation of one for the assembly of insulating mats and first try