Cover plug of the core of a fast neutron nuclear reactor

Details Cover plug of the core of a fast neutron nuclear reactor Cover plug of the core of a fast neutron nuclear reactor

1987-05-05

1988-11-22

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Orifice or fluid control at inlet or outlet of coolant channels

376290, 376285, 376353, 376399, G21C 1500, G21C 1100

Patent

active

047864648

ABSTRACT:
The cover plug (4) comprises a cylindrical barrel (8), a support plate (10), a group of vertical tubes (12) for the control rods and for the instrumentation of the core, an apertured transverse plate (28) fixed to the lower end of the barrel (8) and a transverse deflection plate (32) located above the apertured plate (28). The transverse deflection plate (32) is suspended from the barrel (8) by substantially vertical elastically yieldable strips (34) evenly spaced apart on the periphery of the barrel (8). The strips (34) are welded to the barrel (8) by their upper end and to the edge of the deflection plate (32) by their lower end. They are located in the region of openings (35) in the barrel (8) which permit radial movement of the deflection plate. The deflection plate (32) is also integral with tubes (14b) receiving the control rods disposed in a single row coaxial with the barrel (8).

REFERENCES:
patent: 4293383 (1981-10-01), Lakra et al.
patent: 4309252 (1982-01-01), Gilroy
patent: 4639350 (1987-01-01), Malaval
patent: 4652425 (1987-03-01), Ferrari et al.
Nuclear Fuel Elements, 1982, p. 244, by B. Frost, Pergamon Press.

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