Abstract
Core Support Barrel (CSB) motion was quantified in a PWR using the following statistical descriptors: cross and auto power spectral density, coherence, and amplitude probability density. A scale factor was calculated for quantifying the CSB motion. We found it necessary to employ two-dimensional geometry complexity for the calculations of the scale factor. The statistical descriptors used for quantifying CSB motion had to be obtained from bandlimited signals. The frequency range used for bandlimiting was determined from the phase and the coherence between diametrically opposite excore power range monitors.
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