Evaluation of Noise Analysis for the Enrico Fermi Reactor.

Batch, M.L.; Klickman, A.E.

doi:10.2172/4537968

Cited by 2 publications

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“…where we have put p4=0 and ZE=O, as in Eqs. (13) and 15. We shall now discuss two particular cases :…”

Section: Discussionmentioning

confidence: 99%

Effect on Stochastic Fluctuations of Possible Noise Sources in Non-Boiling Liquid Reactors

Morishima

1973

Journal of Nuclear Science and Technology

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In an earlier paper, a stochastic model of a power reactor has been proposed by the present author on the premise that the coolant-flow through a core is usually accompanied by random variations in the flow-rate, which are eventually largely responsible for the internal reactivity fluctuations.In the present work, this model is extended to three different reactor systems: (a) where there exists a relaxation process corresponding to the effect of buoyant flow ; (b) where a control or fuel element vibrates randomly, due to coolant flow-rate fluctuations; (c) where there are fluctuations in the inlet temperature with a non-white spectrum.The noise spectra are derived for various state quantities with use made of the Langevin procedure. The theory is illustrated by referring chiefly to the neutron noise spectra, and comparing with the results of observations.It is shown that the noise sources in question contribute significantly to the spectra, as compared with a low frequency component due to an inherent noise source in the coolant flow. In particular, a strong resonance peak of the spectra arises from the coupling between the random mechanical vibrations and coolant the flow-rate fluctuations.

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“…where we have put p4=0 and ZE=O, as in Eqs. (13) and 15. We shall now discuss two particular cases :…”

Section: Discussionmentioning

confidence: 99%