Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Shield or barrier between radiation or heat source and...
Patent
1989-12-21
1992-01-28
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Shield or barrier between radiation or heat source and...
2505151, G21C 1100, G21F 112
Patent
active
050842340
ABSTRACT:
The absorption casing for the absorbing of radioactive radiation and fission products comprises four layers of different materials which retain the various kinds of radiation and the gaseous fission products. The first layer (36) consists of lead and absorbs the hard gamma radiation. The second layer (38) serves for the absorption of neutron radiation and consists of boron, hafnium, cadmium or beryllium. A third layer (42), consisting of aluminium, is provided for absorbing the alpha and beta radiation. Gaseous fission products are retained by a fourth layer (44) consisting of a zirconium alloy. The absorption casing provided with these layers is used for absorbing the radioactive radiation and for retaining the radioactive substances of the reactor of a nuclear power plant. In fast breeding reactors, a fifth layer (32), consisting of titanium, is used as an additional absorptive layer for absorbing the radioactive radiation issuing from the plutonium.
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