Method for detecting leaky rods in a nuclear fuel assembly

Details Method for detecting leaky rods in a nuclear fuel assembly Method for detecting leaky rods in a nuclear fuel assembly

1989-02-07

1992-03-24

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

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

Leak detection

376250, 376253, 376409, G21C 1700

Patent

active

050986430

ABSTRACT:
In order to detect leaky rods inside a nuclear fuel assembly (24), this assembly is placed inside a pool (36) so that the gases contained inside the rods (10) escape from the leaky rods. By heating the upper part of the assembly by means of a heated sleeve (42) the gases contained inside the leaky rods are expanded. Monitoring the diameter change of the rods (10) at the base of the assembly by means of a measuring device (44) makes it possible to distinguish the sealed rods whose sheaths elastically get out of shape from the leaky rods whose sheaths hardly warp at all.

REFERENCES:
patent: 3936348 (1976-03-01), Wachter
patent: 4082607 (1978-04-01), Divona
patent: 4650637 (1987-03-01), Chubb
Lecture: The Contribution of Dounreay to the Development of Fast Reactors, C. W. Blumfield; Nucl. Energy, 1979, vol. 18, Oct., No. 5, 311-326.

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