Detector for fuel assembly

Details Detector for fuel assembly Detector for fuel assembly

1984-10-18

1987-04-07

Cangialosi, Salvatore

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

376260, 116205, G21C 1700

Patent

active

046559914

ABSTRACT:
A probe is disclosed for detecting the absence of helical springs from an array of mutually spaced springs, each mounted on a separate shank. The probe includes an elongate arm having a pair of pawls mounted in an aperture at one end of the arm, biased to extend from the aperture. During probing, the helical springs normally prevent the pawls from assuming their extended positions outside the aperture, which is urged by the applied biasing force. If a helical spring is missing from the array, the appropriate pawl pivots outward into its extended position and becomes lodged against the springless shank to lock the probe in position. Its location in the array then indicates where a spring must be replaced.

REFERENCES:
patent: 2789859 (1957-04-01), Woellner
patent: 3511091 (1970-05-01), Thome

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