Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1996-11-05
1998-07-28
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
376230, G21C 712
Patent
active
057871361
ABSTRACT:
A wear resistant material containing no cobalt is used for a sliding portion of a control rod driving mechanism of a nuclear plant for reducing the exposure dose due to elution of cobalt and ensuring smooth driving of a control rod under a high load for a long time. A control rod driving mechanism employs a roller and a pin, each of which is made of a wear resisting alloy comprising coarse particles of a hard phase, having a particle size of from 20 to 100 .mu.m, and dispersed in a soft matrix made of an iron-based or nickel-based alloy containing chromium and having a hardness of 300 Hv or less. A nuclear reactor employs this control rod driving mechanism.
REFERENCES:
patent: 3830694 (1974-08-01), Acher
Kanno Masayoshi
Koshiishi Masato
Kuniya Jiro
Miyazaki Kunio
Shiraki Tomomi
Hitachi , Ltd.
Wasil Daniel D.
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