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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.
S. Sen
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 501-504
Confinement and Transport Studies | doi.org/10.13182/FST95-A11947138
Articles are hosted by Taylor and Francis Online.
We investigate the effects of a radially varying field-aligned flow (which is very nearly equal to the toroidal flow) on the toroidal branch of drift waves. The role of velocity curvature is found to have robust effects on the radial structure of the mode. For a negative value of the curvature (usually found during the NBI heating), the radial mode envelope is much more extended than its conventional localised Gaussian structure and the mode becomes stable. Velocity shear, on the other hand, is found to have rather insignificant role both in determining the radial structure and stability.