Method for determining clad integrity of a nuclear fuel rod

Details Method for determining clad integrity of a nuclear fuel rod Method for determining clad integrity of a nuclear fuel rod

1980-12-18

1983-09-06

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

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

Leak detection

376450, 733365, 436149, G21C 1706

Patent

active

044029047

ABSTRACT:
A method for testing the clad integrity of a nuclear fuel rod, comprising the first step of fabricating a sealed fuel rod with a wad of electrically conducting material mounted therein. The material is of a type that undergoes a permanent change in electrical conductivity when exposed to water. The next step is to establish an eddy current signal characteristic of the moisture-free rod. The rod is then loaded into the core as part of a fuel assembly. After the producing power, the assembly is removed for inspection, and an eddy current signal is again obtained from the rod. The eddy current signals are compared to determine whether inleakage of moisture has oxidized or otherwise altered the conductivity of the wad enough to significantly change the characteristic signal.

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