Induced nuclear reactions: processes – systems – and elements – Reactor structures – Circulating fluid within reactor
Patent
1995-02-07
1996-11-19
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
Reactor structures
Circulating fluid within reactor
376305, 376259, 376255, 376194, G21C 1928
Patent
active
055770835
ABSTRACT:
A method and an apparatus for electrically suppressing electrochemical potential near highly susceptible components of a boiling water reactor. A small self-powered, electrical device is affixed to the metal area to be protected, which device has the capacity to locally suppress electrochemical potential automatically and continuously without provision for external power supplies, cables, penetrations, or other paraphernalia usually associated with electrical and electronic systems. The result is that components susceptible to intergranular stress corrosion cracking are not as sensitive to the details of the water chemistry flowing over them and do not crack as much, or as rapidly, as presently. The new technique is based on the concept of supplying electrons directly and locally to the sensitized zone(s) of the metal, thereby inhibiting intergranular stress corrosion cracking. The source of the electrons is .beta.-emitting material which is contained in a housing attached to the metal. The electron source is electrically connected to the sensitized zone of the metal. The current of electrons has a magnitude sufficient to compensate for the electrons lost by the metal to electron-accepting fluid in contact with the metal.
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Gordon Barry M.
Terhune James H.
Chelliah Meena
General Electric Company
Jordan Charles T.
McGinness James E.
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