Method and apparatus for minimizing diversion of radioactive sam

Compositions – Radioactive compositions

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2505061, 252626, 422159, 422903, G21F 706

Patent

active

044937920

ABSTRACT:
Method and apparatus for minimizing diversion of radioactive samples from a nuclear fuel sampling system. The apparatus includes a sampler for drawing a radioactive sample from a remote vessel containing nuclear fuel. The sampler is located within a shielding enclosure that has solid walls for preventing direct physical access to the sampler. A tray is located in the wall of the enclosure and is used for translating a sample vessel in and out of the enclosure. The apparatus further includes a time lock escapement that periodically immobilizes the tray for a period of time sufficient to minimize diversion of the radioactive samples.

REFERENCES:
patent: 2303614 (1942-12-01), Claus
patent: 2837907 (1958-06-01), Halling et al.
Sellers et al, "Engineered Safeguards System . . . ", Conf-780304-1, (1978).
NEDO-10178, (Dec. 1970).

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