ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Nuclear Science and Engineering
Fusion Science and Technology
SRS preps for dissolution of stainless-steel-clad spent fuel
The Department of Energy is preparing for an upcoming campaign to dissolve stainless-steel-clad spent nuclear fuel at its Savannah River Site in South Carolina by installing a new dissolver and an additional double-sized tank for storing dissolved material.
Xuelong Fu, Jie Tao, Dunwen Zuo
Nuclear Science and Engineering | Volume 194 | Number 1 | January 2020 | Pages 69-83
Technical Paper | dx.doi.org/10.1080/00295639.2019.1654328
Articles are hosted by Taylor and Francis Online.
B4C/CF/PI/AA6061 hybrid composite laminates (BCPAs) with different configurations were fabricated using a hot molding process and then were irradiated by a 60Co gamma ray with various doses (250, 500, 750, and 1000 kGy) under ambient conditions. The effects of gamma irradiation on the morphological, physical, and thermal properties of the BCPAs were evaluated correspondingly. It was shown that the specimens maintained good interfacial adhesion even after gamma irradiation up to 1000 kGy and that no obvious delamination, swelling, and surface irradiation damage could be observed. Fourier transform infrared spectroscopy of the BCPAs after gamma irradiation indicated no obvious discrepancy when compared with that of nonirradiated specimens. The specimens still maintained good thermal stability with the experimental temperature up to 400°C. When the specimens were gamma irradiated with the dose of 750 kGy, the thermal stability of the BCPAs was optimal. Polyimide resin under gamma irradiation was inclined to form free radicals close to each other and underwent radiation decomposition, a chain scission and cross-linking reaction, and a secondary cross-linking reaction. By analyzing the C-C bond, C-O bond, and C = O bond in the C1s spectrum, the relative intensity of the C = O bond decreased with the irradiation dose; moreover, gamma irradiation caused the decomposition of a certain amount of the oxygen functional group C = O.