Induced nuclear reactions: processes – systems – and elements – Miscellaneous
Patent
1993-12-28
1995-04-11
Harvey, Behrend E.
Induced nuclear reactions: processes, systems, and elements
Miscellaneous
376253, 376450, G21C 300, G21C 2102
Patent
active
054066050
ABSTRACT:
For use in the manufacture of gas tags such as employed in a nuclear reactor gas tagging failure detection system, a method for designing gas tagging compositions utilizes an analytical approach wherein the final composition of a first canister of tag gas as measured by a mass spectrometer is designated as node #1. Lattice locations of tag nodes in multi-dimensional space are then used in calculating the compositions of a node #2 and each subsequent node so as to maximize the distance of each node from any combination of tag components which might be indistinguishable from another tag composition in a reactor fuel assembly. Alternatively, the measured compositions of tag gas numbers 1 and 2 may be used to fix the locations of nodes 1 and 2, with the locations of nodes 3-N then calculated for optimum tag gas composition. A single sphere defining the lattice locations of the tag nodes may be used to define approximately 20 tag nodes, while concentric spheres can extend the number of tag nodes to several hundred.
REFERENCES:
patent: 3959069 (1976-05-01), McCormick
Nuclear Technology, vol. 24, Nov. 1974, pp. 156-162, 164-167, McCormick.
Trans. Am. Nuc. Soc., vol. 27, (1977), p. 685, Gross et al.
Gross Kenny C.
Harvey Behrend E.
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