Three-dimensional model of vibration and impacting of instrument tubes in a boiling water reactor and transfer from mechanical to neutron noise
Journal Article
·
· Nuclear Science and Engineering
OSTI ID:89676
- Univ. of Hannover (Germany). Inst. of Nuclear Engineering and Nondestructive Testing
The vibration and impacting of an instrument tube against the surrounding fuel boxes in a boiling water reactor (BWR) was studied by means of a three-dimensional, one modal model. The transfer of the tube displacements to neutron fluctuations of the fission chamber-instrument tube assemblies was calculated by employing the adjoint function technique and utilizing a two-dimensional, two-group diffusion theory. The results were used to interpret the particular measured noise spectra of an instrument tube in the 1,300-MW Gundremmingen C BWR. The root-mean-square of the displacements was estimated from the experimental neutron data.
- OSTI ID:
- 89676
- Journal Information:
- Nuclear Science and Engineering, Journal Name: Nuclear Science and Engineering Journal Issue: 2 Vol. 120; ISSN NSENAO; ISSN 0029-5639
- Country of Publication:
- United States
- Language:
- English
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