Method and equipment for detecting deflective nuclear fuel rods

Details Method and equipment for detecting deflective nuclear fuel rods Method and equipment for detecting deflective nuclear fuel rods

1974-03-18

1976-03-23

Queisser, Richard C.

Measuring and testing

Moisture content or absorption characteristic of material

73 15R, 73 40, 73 405A, 73 715US, 176 19LD, G01N 2900, G01M 304

Patent

active

039452450

ABSTRACT:
Nuclear fuel rod ends of water-cooled reactor fuel rods, are heated in the region of the fission gas plenums and/or in the region of the upper or lower ends of the fuel columns. The moisture present in the case of damage to the fuel rods' casings, evaporates and is partly condensed at the end caps. In the case of a fuel rod completely filled with water, steam bubbles are generated. Both indications of casing leakage or damage are ascertained by ultrasonic reflection measurements and/or measurement of a temperature-vs-time curve, obtained at the end cap.

REFERENCES:
patent: 2718141 (1955-09-01), Richards
patent: 2979950 (1961-04-01), Leone
patent: 3292426 (1966-12-01), McCann
patent: 3459925 (1969-08-01), Goosey et al.
patent: 3546924 (1970-12-01), Nussbaum et al.
patent: 3592967 (1971-07-01), Harris
patent: 3597316 (1971-08-01), Lynworth
patent: 3666625 (1972-05-01), Nybo
patent: 3813286 (1974-05-01), Goldman et al.
patent: 3823068 (1974-07-01), Worlton et al.

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