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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.
H. Takahashi, A. Okamoto, T. Takahashi, S. Kitajima
Fusion Science and Technology | Volume 68 | Number 1 | July 2015 | Pages 190-195
Technical Note | Open Magnetic Systems 2014 | doi.org/10.13182/FST14-910
Articles are hosted by Taylor and Francis Online.
This technical note reports the first experimental investigation aiming for divertor plasma dynamics study using helium recombining plasma and energetic helium ion beam. A divertor plasma relevant experiment was performed using a linear plasma device, DT-ALPHA, and a multicusp ion source. The radial profiles of the line emission intensities from helium Rydberg atoms were investigated, and the reaction rate of volumetric recombination was confirmed to increase in the central region of the cylindrical plasma. Then an energetic helium ion beam was superimposed onto the helium recombining plasma. The optical emission intensities from the helium recombining plasma with and without energetic ions were obtained and compared. The temporal evolution of the optical emission indicated that charge-exchange momentum transfer between energetic helium ions and ground state helium atoms can affect population density even in recombining plasma where population density is dominated by recombining processes rather than ionizing processes.