Capability to Model Reactor Regulating System in RFSP

Abstract

The Reactor Regulating System package extracted from SMOUN-G2 was linked within RFSP to the spatial kinetics calculation. The objective is to use this new capability in safety analysis to model the actions of RRS in hypothetical events such as in-core LOCA or moderator drain scenarios. This paper describes the RRS modelling in RFSP and its coupling to the neutronics calculations, verification of the RRS control routine functions, sample applications and comparisons to SMOKZN-G2 results for the same transient simulations.