Method and apparatus for diagnosing breached fuel elements

Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Leak detection

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G21C 1706

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active

047643358

ABSTRACT:
The invention provides an apparatus and method for diagnosing breached fuel elements in a nuclear reactor. A detection system measures the activity of isotopes from the cover-gas in the reactor. A data acquisition and processing system monitors the detection system and corrects for the effects of the cover-gas clean up system on the measured activity and further calculates the derivative cure of the corrected activity as a function of time. A plotting system graphs the derivative curve, which represents the instantaneous release rate of fission gas from a breached fuel element.

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McCormick, "A Computational Technique to Assess Proced. for Failed-Fuel Identification," Nuclear Sci. & Eng., 567-15, 1975.
So et al., "Fission Gas Behavior in the EBR-II Primary System," Trans. Am. Nucl. Soc., vol. 27, Nov. 1977.

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