Integral reactor cavity seal/shield

Details Integral reactor cavity seal/shield Integral reactor cavity seal/shield

1987-12-21

1989-06-27

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

2505181, 376287, O21C 1100

Patent

active

048428043

ABSTRACT:
A reactor cavity seal and shielding system for a PWR that protects personnel from radiation during full power operation and shutdown conditions, and allows the refueling canal to be flooded while allowing access to the lower portions of the reactor well. An integral annular seal and shield is sealed to the pressure vessel and to the primary shield. The seal preferably extends horizontally from a flange on the reactor pressure vessel to an inwardly extending ledge on the primary shield, and carries a generally coextensive body of solid neutron-absorbing material. The seal may be fabricated from stainless steel, and preferably incorporates a bellows seal to accommodate thermal expansion. The shield may be silicone rubber, refractory concrete, or any solid neutron absorber.

REFERENCES:
patent: 3633784 (1972-01-01), Taft
patent: 4070221 (1978-01-01), Anthony
patent: 4123662 (1978-10-01), Fisher
patent: 4126515 (1978-11-01), Klotz et al.
patent: 4170517 (1979-10-01), Meuschke et al.
patent: 4214760 (1980-07-01), Godfrey
patent: 4508678 (1985-04-01), Costes
patent: 4584163 (1986-04-01), Hankinson
patent: 4600553 (1986-07-01), Katz et al.
patent: 4747993 (1988-05-01), Hankinson et al.

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