Abstract
The object of the study is a thermophysical model of a water-cooled technological channel with low enrichment fuel (WCTC-LEU) of IVG.1M reactor and experimental data from IVG.1M reactor P17-07, P17-08 and P17-09 start-ups. Validation and verification of WCTC-LEU thermophysical model of IVG.1M reactor was conducted to substantiate the applicability of the developed model in non-stationary calculations of thermal processes of the IVG.1M reactor installation. Developed thermophysical model of WCTC-LEU can be used for the analysis of emergency situations aimed at justifying the safety of the IVG.1M reactor with low enrichment fuel.