A practical procedure of bilinear weighted core kinetics parameters computation for the purpose of experimental reactivity determination

A practical procedure for the computation of bilinear weighted core kinetics parameters of WWER-440 reactors, intended to be used in experimental reactivity determination by the inverse kinetics method is described. The results from its application are benchmarked against those obtained on the basis of a many-group fine-mesh two-dimensional solution of the core boundary problem. The sensitivity of core kinetics parameters and of the resultant experimental reactivity values to the variation of primary delayed neutron data is evaluated.