NOISE ANALYSIS FOR THERMAL STUDIES OF LMFBR FUEL RODS
This paper presents the results of the noise analysis of two fuel rod irradiation experiments NILOC I and NILOC II with LMFBR mixed (U,Pu) nitride fuel, irradiated in the High Flux Reactor (HFR) at Petten. The fluctuations of the thermocouple signals in the shroud together with reactor neutron detector signals have been analysed in time and frequency domain. Bi-variate auto- regression modelling results in experimental step response times. Corresponding temperature responses and step response parameters have also been calculated using a computational code for a two-dimensional (R-Z) time dependent finite difference thermal model, for a perturbation with a step in heat generation. Comparison between the experimental and calculated results gave satisfactory information for validation of the model and the experiment. The potential of the application of noise analysis methods in fuel irradiation experiments is discussed.
Bibliographic Reference: SYMPOSIUM ON REACTOR NOISE, MUENCHEN/D, OCT. 12-16, 1987, AVAILABILITY: CEC-LUXEMBOURG, DG XIII/A2, BP 1907, MENTIONING PAPER ORA 33690 E
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Record Number: 1989126069700 / Last updated on: 1989-05-01
Available languages: en