Experience in application of radioanalytical methods, including NAA, at the IBR-2 pulsed fast reactor is reviewed. Details of the instruments dedicated to the neutron activation analysis and radiography studies are reported. Applications of resonance neutrons to environmental control, to analysis of geological samples in oil extraction regions, to testing the quality of food products, and to the investigation of high-purity materials to solve nuclear physics problems, are exemplified. Work to use isotopic neutron sources for an analysis for nitrogen in natural and synthetic materials is being carried out.