Experimental-computational investigation of the energy-release field and field burnup in IRT

A comprehensive gamma -spectrometric investigation of fuel assemblies in an IRT core war performed. The objective was to obtain experimental informati on on the contribution of individual fuel assemblies to the total energy pr oduction and the relative fuel burnup and to compare the results with the c omputed prediction obtained with the TIGR program. Measurements of the rela tive burnup and energy production (in the last 4 months) of individual fuel assemblies in the IRT core were performed. The error in the obtained data is 2-3%, which permits using them as tests for calculations. It was establi shed that the accuracy of the calculations of the relative contribution of a fuel assembly to the energy production and burnup, performed using the TI GR program, is satisfactory.