Induced nuclear reactions: processes – systems – and elements – Reactor protection or damage prevention – Corrosion or damage prevention
Patent
1978-05-17
1982-12-21
Cangialosi, Sal
Induced nuclear reactions: processes, systems, and elements
Reactor protection or damage prevention
Corrosion or damage prevention
376310, G21C 1932
Patent
active
043649009
ABSTRACT:
In pressurized water-cooled nuclear reactors, the formation of deposits on surfaces in the core of the reactor, e.g. on fuel sheaths, is suppressed by maintaining in the circulating pressurized water, a high concentration of ammonia ranging from about 120 to about 200 mg NH.sub.3 /kg water. Crevice corrosion of the fuel sheaths is avoided, even under localized boiling conditions, since the pH never attains a corrosively high level. The crevice corrosion danger with lithium can be reduced by replacing part of the lithium with ammonia.
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Hicks, J. H. "Recent Concerns with Reactor Coolant Chemistry Technology in Pressurized Water Reactors" 29 Nuclear Technology, May, 1976, pp. 146-152.
Sweeton, F. W. and Baes, Jr., C. F., 2 J. Chem. Thermo, 1970, p. 479, [C. F. specification at p. 6].
Atomic Energy of Canada Limited
Cangialosi Sal
Thomson Alan A.
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