Abstract
The possibility of determining reactor subcriticality on the basis of spectral analysis of reactor noise taking into account spatial effects is considered. The proposed approach uses the model of an equivalent noise source, which in accordance with the Schottky formula includes reactivity and neutron adjoint flux factors determined directly from reactor noise measurements by the system of in-core detectors. The implementation of the methodology is illustrated by the example of a simple calculation model of a plane reactor.
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