Radiological analysis and transmutation calculation of representative castable nanostructured alloys

摘要: Abstract Radiological analysis regarding the waste management was performed on two current reduced-activation ferritic-martensitic (RAFM) steels Eurofer 97 and F82H castable nanostructured alloys (CNAs) CNA1 CNA3 using European DEMO first wall spectrum. are a new generation of RAFM steels, which have increased amounts nanoscale carbonitrides carbides precipitates, respectively, via small composition modifications. The nitrogen in leads to higher activity at ≥50 years, thus disposal concern under NRC regulation. However, calculation Fetter’s evaluation reduced rating (WDR) down 0.25 depending damage dose from ∼0.05 wt percent CNA1, less disposal. Contact rate after 10 years replacement primarily depends initial Co Nb impurity levels. Other added elements, such as V Si Ti Mn CNA3, do not significant effect specific activity, contact rate, or decay heat. Composition limits CNAs given based shallow burial materials recycling. In addition, evolution typical precipitates calculated HFIR spectra. Larger transmutation-induced occurs V/Ta-rich than that Ti-rich CNA3.