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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.
Robert D. Woolley
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 543-547
Plasma Engineering (Poster Session) | doi.org/10.13182/FST98-A11963669
Articles are hosted by Taylor and Francis Online.
Long pulse fusion physics experiments can be performed economically via resistive electromagnets designed for thermally steady-state operation. Possible fusion experiments using resistive electromagnets include long pulse ignition with DT fuel.1,2,3,4 Long pulse resistive electromagnets are alternatives to today's delicate and costly superconductors.5 At any rate, superconducting technology is now evolving independent of fusion, so near-term superconducting experience may not ultimately be useful.
High magnetic field copper coils can be operated for long pulses if actively cooled by subcooled liquid nitrogen, thermally designed for steady state operation. (Optimum cooling parameters are characterized herein.) This cooling scheme uses the thermal mass of an external liquid nitrogen reservoir to absorb the long pulse resistive magnet heating. Pulse length is thus independent of device size and is easily extended. This scheme is most effective if the conductor material is OFHC copper, whose resistivity at liquid nitrogen temperature is small. Active LN2 cooling also allows slow TF ramp-up and avoids high resistance during current flattop; these factors reduce power system cost relative to short pulse adiabatic designs.