Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Recombiners
Patent
1993-05-21
1995-02-21
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Recombiners
376305, 422 7, G21C 900
Patent
active
053923251
ABSTRACT:
A catalytic recombiner device for reacting two or more molecular species having dilute concentrations in fluids flowing in pipes at elevated temperatures. The species are stable in the bulk fluid, but because of a high electrochemical potential, the species create conditions favorable to stress corrosion cracking in the pipe walls. If the pipe forms a portion of a coolant system, as in a nuclear power plant, the dissolved chemical species are transported and distributed throughout the system with undesirable consequences. To reduce the electrochemical potential, a cartridge having catalytic surfaces is installed in the flow upstream of the component to be protected against stress corrosion cracking. The catalytic surfaces of the cartridge form a small amount of benign reaction product (e.g. water), thereby reducing the concentration of undesirable species. The presence of a compact catalytic recombiner at strategic locations substantially reduces the electrochemical potential and protects both the piping and the vessels and internals connected to the piping from corrosive attack.
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Charnley James E.
Gordon Gerald M.
McAllister Beth Ann
Terhune James H.
Chelliah Meena
General Electric Company
McGinness J. E.
Walsh Donald P.
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