Adsorption seal for nuclear reactors

Details Adsorption seal for nuclear reactors Adsorption seal for nuclear reactors

1975-02-13

1978-01-17

Engle, Samuel W.

176 87, G21C 900

Patent

active

040691004

ABSTRACT:
A system for reducing the possibility of leakage of fission gases from a nuclear reactor of the gas-cooled type or of a type utilizing a liquid coolant, for example a liquid metal with a cover gas above free surfaces of the coolant. The disclosed system reduces the leakage of fission gases from the cover gas through joints between a pressure vessel and a pressure vessel head in the nuclear reactor by installing an adsorbent material between two seals placed in the joints. This adsorbent material provides sufficient delay time to allow all radioactive isotopes, except long-lived nuclides, to decay to innocuous concentrations before escaping from the pressure vessel.

REFERENCES:
patent: 3141829 (1964-07-01), Fortescue
patent: 3252869 (1966-05-01), Kloutz
patent: 3274066 (1966-09-01), Zumwalt
patent: 3356580 (1967-12-01), Bell et al.
patent: 3356585 (1967-12-01), Zebroski
patent: 3406863 (1968-10-01), Wenzel et al.
patent: 3406864 (1968-10-01), Schmidt
patent: 3519537 (1970-07-01), Ferrari
patent: 3698724 (1972-10-01), Blachere

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