Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1992-06-30
1993-08-31
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
376419, 376457, 420422, G21C 307
Patent
active
052415716
ABSTRACT:
A burnable absorber controls axial power peaking or moderator temperature coefficient while additional elements are added to improve strength and/or corrosion resistance in a zirconium alloy containing erbium in a range of from about 0.05 to 2 wt. % selected from the group consisting of a naturally occurring distribution of isotopically enriched erbium-167 and a combination thereof; in a range of from a measurable amount up to 1.4% tin; from 0.2 to 0.5 wt. % iron; from 0.07 to 0.25 wt. % chromium; in a range of from a measurable amount up to 0.6 wt. % niobium; in a range of from a measurable amount up to 0.5 wt. % vanadium; 50-120 ppm silicon; 1000-2200 ppm oxygen and a balance of zirconium. Alternatively, the erbium can be replaced by gadolinium in a range of from about 0.05 to 6 wt. % selected from the group consisting of a naturally occurring distribution of gadolinium isotopes, isotopically enriched gadolinium-157 and a combination thereof.
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Development of High Corrosion Resistance Zirconium-Base Alloys, Nov. 1990.
Corsetti Lawrence V.
Pati Satya R.
Combustion Engineering Inc.
Kananen Ronald P.
Wasil Daniel D.
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