Remarks on boiling water reactor stability analysis - Part 2: Stability monitoring

Research output: Contribution to journalResearch articleContributedpeer-review


  • C. Lange - , TUD Dresden University of Technology (Author)
  • D. Hennig - , TUD Dresden University of Technology (Author)
  • A. Hurtado - , Chair of Hydrogen and Nuclear Energy (Author)
  • R. Schuster - , Kernkraftwerk Brunsbüttel GmbH and Co. OHG (Author)
  • B. Lukas - , EnBW Energy Baden-Württemberg AG (Author)
  • C. Aguirre - , Kernkraftwerk Leibstadt AG (Author)


In part 1 of this article we explained the partly relative complex solution manifold of the differential equations describing the stability behaviour of a BWR, in particular the coexistence of different types of solutions, such as the coexistence of unstable limit cycles and stable fixed points are of interest from the operational safety point of view. The part 2 is devoted to the surveillance of the stability behaviour. We summarize some stability monitoring methods and suggest to support stability tests by RAM-ROM analyses in order to reveal in advance the stability "landscape" of the BWR in a parameter region high sensitive for appearing of linear unstable states. The analysis of an especial stability test, performed at NPP Leibstadt (KKL), makes it clear that the measurement results can only be interpreted by application of bifurcation analysis.


Original languageEnglish
Pages (from-to)409-417
Number of pages9
Issue number6
Publication statusPublished - Dec 2012