Radiation shielding for electric penetration assemblies

Details Radiation shielding for electric penetration assemblies Radiation shielding for electric penetration assemblies

1978-02-09

1981-04-14

Cangialosi, S. A.

G21C 1700

Patent

active

042617944

ABSTRACT:
A cylindrical electric penetration assembly carrying instrumentation leads from the interior of a nuclear reactor and having thin layers of polyethylene and lead radiation shielding installed at both its entrance and exit regions, the shielding layers being separated by a large hollow cavity located inside the central portion of the penetrator nozzle. Each layer attenuates and extinguishes either gamma ray or neutron radiation emanating from the reactor's core. The combination of the shielding and central air pocket prevents excessive radiation leakage through the penetration assembly and excessive heating inside the penetration nozzle.

REFERENCES:
patent: 2858451 (1958-10-01), Silversher
patent: 2911343 (1959-11-01), Braffort et al.
patent: 2942116 (1960-06-01), Axelrad
patent: 3012956 (1961-12-01), Currier, Jr. et al.
patent: 3028497 (1962-04-01), Tengsater
patent: 3050624 (1962-08-01), Janner
patent: 3086931 (1963-04-01), Long et al.
patent: 3389258 (1968-06-01), Reed et al.
patent: 3717765 (1973-02-01), Hiller
"Coping with Radiation in Nuclear Power Plants," H. F. Reed, Conference Paper, IEEE, N.Y., (6/13/67).

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