Abstract
Neutron flux oscillation event occurred at LaSalle-2 (BWR5) on March 9, 1988 which arised issues such as why the event occurred and what major differences between LaSalle-2 and other BWRs were in view of the BWR stability. In order to resolve the issues, a method to determine instability threshold was developed at Japan Atomic Energy Research Institute (JAERI) by using the transient thermal-hydraulic analysis code RETRAN which was developed at Electric Power Research Institute (EPRI). The validity of the method was confirmed by parametric studies and thermal-hydraulic experiment analyses. Using the method, the instability boundary for in-phase oscillation was obtained. For out -of-phase oscillation, however, it was found that the instability boundary could not be determined in nature due to the limitation from the point reactor kinetics model.
| Original language | English |
|---|---|
| Pages (from-to) | 879-888 |
| Number of pages | 10 |
| Journal | Nippon Genshiryoku Gakkaishi/Journal of the Atomic Energy Society of Japan |
| Volume | 34 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1992 |
| Externally published | Yes |
Keywords
- BWR type reactors
- computer codes
- in-phase oscillation
- instability
- oscillation modes
- out-of-phase oscillation
- point reactor kinetics
- RETRAN
- transient thermal-hydraulics
ASJC Scopus subject areas
- Nuclear Energy and Engineering