Nuclear reactor inspection device

Details Nuclear reactor inspection device Nuclear reactor inspection device

1977-11-21

1980-08-12

Bentley, Stephen C.

176 30, G21C 1700

Patent

active

042171733

ABSTRACT:
A typical embodiment of the invention combines a novel cellular end fitting for a nuclear reactor fuel assembly with a new design for a fuel rod end cap and a radiation sensing device probe to provide a means for swiftly and accurately distinguishing sound fuel rods from those rods that have developed leaks. For example, a somewhat thinner than usual fuel rod end cap is accessible through the open cellular structure of the end fitting to permit a hollow metal probe to contact the fuel rod end cap. This direct contact excludes most of the water, metal and other shielding materials from the volume between the interior of the fuel rod and the radiation detector, thereby improving the quality of the fuel rod examination. A bridge and trolley structure for accurately positioning the probe also is described.

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patent: 3975949 (1974-08-01), Johnson et al.
patent: 4036686 (1977-07-01), Weilbacher et al.
patent: 4053356 (1977-10-01), Brammer, Jr.

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