Simulation of nuclear power plant pressurizers with the application to an inherently safe reactor

Pressurizer modelling for predicting the dynamic pressure of the PIUS system is presented. The transient behaviour of this model was investigated. The inherently safe feature of the PIUS system was confirmed through the self-shutdown of the reactor or, in some cases, through reactor power reduction as a result of the ingress of the pool boric acid solution into the primary system. The dynamic model was simulated using the DAREP continuous system simulation language which was developed in the Electrical Engineering Department at the University of Arizona, U.S.A. (author). 6 refs., 1 fig