Fundamental Stability Analysis of Hypothetical Boiling and Pressurized Water Reactors pp. 163-178
Authors: (Robert Farkas, Lixuan Lu, University of Ontario Institute of Technology, Oshawa, Ontario, Canada, and others)
Abstract: Both boiling water reactors and pressurized water reactors are widely used and continue to enjoy commercial success. The stability of both reactor types is the focus of this research. It has been shown that some prototypical boiling water reactors tend towards self-induced power oscillation at a frequency around 7.5 -11 radians/second. However, the equivalent literature on pressurized water reactors is sparse. In this research, the stability of the boiling water reactor is compared to that of the pressurized water reactor using the frequency response method. To do so, the open-loop transfer function is firstly derived for a hypothetical reactor of each type based on their thermal-hydraulic properties. Their respective Bode plots are then generated. It can be seen that the comparative results are consistent with the observed boiling water reactor oscillations at a frequency of approximately 10 radians/second, and the relative operational stability of the pressurized water at similar frequencies is reserved.