Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Temperature or pressure measurement
Patent
1980-07-31
1983-05-10
Cangialosi, Sal
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Temperature or pressure measurement
376251, 376253, G21C 1700
Patent
active
043829066
ABSTRACT:
Nuclear fuel elements or slugs are removed from the nuclear reactor cores and subjected to inspection, according to the invention, by introducing a plurality of such elements into a submerged inspection vessel which is then closed, the liquid driven out by compressed air and deionized water (deionate) circulated through the inspection vessel at a constant rate. A portion of the deionized water is branched from the circulating stream at a constant rate and the activity of at least one fission-product nuclide is determined continuously to plot the activity versus temperature, thereby signaling a possible defect in the shell of a fuel element. In addition, ultrasonic vibration is applied in the inspection vessel to the fuel elements so that deposits on the exterior thereof are released into the deionate whose circulating path includes a filter and an ion-exchange column for removal of such deposits.
REFERENCES:
patent: 3073767 (1963-01-01), Whitman et al.
patent: 3248297 (1966-04-01), Moore et al.
patent: 3375169 (1968-03-01), McHugh et al.
patent: 3419467 (1968-12-01), Holzer et al.
patent: 4147587 (1979-04-01), Utamara et al.
Ambros Rainer
Paffrath Gottfried
Cangialosi Sal
Dubno Herbert
Rheinisch-Westfalisches Elektrizitatswerk AG
Ross Karl F.
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