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NSI report addresses supply chain bottlenecks
A new report commissioned by the Nuclear Scaling Initiative, conducted by energy consultant Solestiss, and funded by the Bezos Earth Fund, identifies and recommends solutions to overcome current bottlenecks in the supply chain for advanced reactors.
Broadly speaking, the report recommends the repeated deployment of Gen III+ reactor designs to rebuild the foundation of domestic manufacturing, workforce, and qualification capacity.
Koichi Asakura, Yoshiyuki Kato, Hirotaka Furuya
Nuclear Technology | Volume 162 | Number 3 | June 2008 | Pages 265-275
Technical Paper | Fuel Cycle and Management | doi.org/10.13182/NT08-A3955
Articles are hosted by Taylor and Francis Online.
The characteristics and sinterability of UO2-PuO2 mixed oxide (MH-MOX) powder prepared by the microwave heating denitration method were measured and compared with those of UO2 (ADU-UO2) powder prepared by the ADU method. Furthermore, the degree of surface roughness and flowability of MH-MOX powder were evaluated and also compared with those of ADU-UO2 powder. The degree of surface roughness of ADU-UO2 powder calcined at temperatures >700°C significantly decreased, and its sintered density also dropped below 80% theoretical density. However, the degree of surface roughness and sinterability of MH-MOX powder calcined at 950°C were higher than those of ADU-UO2 powder. These results could be understood using the concept of Hüttig and Tamman temperatures, which is commonly cited for ceramic materials. The flowabilities of MH-MOX and ADU-UO2 powders decreased with an increase of compressibility, and they were categorized as non-free-flowing according to Carr's theory on powder flowability. It is, therefore, necessary for the mixed powder of MH-MOX powder, ADU-UO2 powder, and dry recycled MOX scrap powder to be granulated to provide a free-flowing feed to the pelletizing press in the MOX pellet fabrication process.
