Technique of testing the VVER-1000 high burnup fuel rods in the MIR reactor at the design basis RIA parameters

To study the VVER-1000 fuel behaviour under design basis RIA accident conditions, a technique was developed and implemented in the MIR reactor for conducting reactor dynamic experiments with simulation of parameters responsible for thermo-mechanical state of fuel rods. The method for defining parameters, which determine the thermo-mechanical fuel state, is based on processing the experimental curve of temperature change in the fuel centre and readings of other measuring sensors installed in the experimental fuel assembly and primary circuit of the loop facility under stationary and transient conditions