The reactor analysis support package (RASP): Volume 9, BWR (boiling water reactors) stability analysis: Final report
The EPRI reactor analysis support package (RASP) system consists of computer codes, documentation, linkage software, and support methodology and training that utilities can use in-house to perform a wide range of nuclear plant safety analyses. As part of the RASP development project, this study devised a specialized methodology for BWR reload fuel licensing as required by NRC. Each plant and fuel design must meet criteria for total-plant core-reactivity and channel-hydrodynamic stability. The current vendor methodology for BWR stability analysis has been reviewed, and a transformation code to compute the required stability parameters (decay ratio and natural frequency) using RETRAN time history results has been developed. Several analyses for each of the three different stability criteria to validate the methodology and demonstrate its application were performed. Utilities that have already established control and primary system models with RETRAN will be able to use this new methodology to perform stability analyses as well. With this technique, RETRAN provides the capability for total-plant stability analysis in the real-time domain; with Fourier transform methods, the code provides the key parameters for core-reactivity and channel-hydrodynamic stability analysis.
- Research Organization:
- Levy (S.), Inc., Campbell, CA (USA)
- OSTI ID:
- 5447246
- Report Number(s):
- EPRI-NP-4498-Vol.9; ON: TI88920234
- Country of Publication:
- United States
- Language:
- English
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REACTOR COMPONENTS
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