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Developing a new regulatory framework for advanced reactors: Update on Part 53
White
The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) on March 29 held another presentation in its monthly Community of Practice (CoP) series. The presenter, Patrick White with the Nuclear Innovation Alliance (NIA), talked about the current status of efforts to develop a new regulatory framework for advanced reactors—known as 10 CFR Part 53 or simply Part 53. White serves as the research director of the NIA, where he leads their research as well as analysis-based stakeholder and policymaker engagement and education. White’s March 29 presentation is publicly available on YouTube and at ANS’s publication platform Nuclear Science and Technology Open Research (NSTOR).
RP3C chair N. Prasad Kadambi opened the CoP with brief introductory remarks about the RP3C before he welcomed White as the session’s presenter.
White covered three main topics: the history of the existing regulatory frameworks for new reactors, progress to date on the development of the Part 53 rule for advanced reactors, and the current status and next steps for the Part 53 rulemaking process.
T. Endo, K. Shibata, Y. Fujima, T. Norimatsu
Fusion Science and Technology | Volume 38 | Number 1 | July 2000 | Pages 34-41
Technical Paper | Thirteenth Target Fabrication Specialists’ Meeting | doi.org/10.13182/FST00-A36112
Articles are hosted by Taylor and Francis Online.
We carried out experiments on cooling-induced deformation (CID) of inertial-fusion fuel capsules. Polystyrene spherical shells were used as test samples. In the experiments, approximately 90 shells were cooled using liquid nitrogen and observed with an optical microscope. Pictures of each shell were recorded at 0°C and −190°C, and they were compared with each other. About a half of the tested shells showed CID, where the maximum deformation was in the order of 1% of the shell radius. Although the polystyrene shells were fabricated by a density-matched emulsion method using both hand-shaken microencapsulation and triple-orifice droplet-generator techniques, we recognized no significant difference in deformation characteristics between these two techniques. The observed CID showed poor reproducibility. We tried annealing in order to prevent CID, but no apparent improvement was recognized.