Reliable leak detection in a heat exchanger of a sodium-cooled fast reactor

Annals of Nuclear Energy(2020)

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Abstract
•Monitoring of a sodium-cooled fast reactor heat exchanger.•Detection of water or nitrogen leaking into a sodium circuit.•Abrupt changes in the spectral density of vibro-acoustic signals.•Analytical formulas for the statistical properties of the detector.
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Key words
Sodium-cooled fast reactors,Heat exchanger leak detection,Accelerometer vibro-acoustic signal,Spectral analysis,Periodogram,Finite moving average,Exponential distribution
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