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ANS hosts webinar on criticality safety standards
A diagram depicting the NRC’s regulatory structure for nuclear criticality safety. (Image: Oak Ridge National Laboratory)
The American Nuclear Society’s Risk-informed, Performance-based Principles and Policy Committee (RP3C) held another presentation in its monthly Community of Practice (CoP) series last month. RP3C chair Steven Krahn opened the meeting with brief introductory remarks about the importance of risk-informed, performance based (RIPB) decision-making and the need for new approaches to nuclear design that go beyond conventional and deterministic methods.
S. J. Diem, D. T. Fehling, D. L. Hillis, A. R. Horton, A. Nagy, R. I. Pinsker, E. A. Unterberg
Fusion Science and Technology | Volume 64 | Number 3 | September 2013 | Pages 530-532
Fusion Technologies: Heating and Fueling | Proceedings of the Twentieth Topical Meeting on the Technology of Fusion Energy (TOFE-2012) (Part 2) Nashville, Tennessee, August 27-31, 2012 | doi.org/10.13182/FST13-A19147
Articles are hosted by Taylor and Francis Online.
Locating arcs within the fast wave current drive system is necessary to improve antenna performance and coupling to the plasma. Previously, there had been no way to observe arcs inside the vacuum vessel in an ICRF antenna on DIII-D. A new diagnostic that uses photomultiplier tubes has been installed for the 2012 run campaign on the 285/300 antenna of the fast wave system. The diagnostic has top and bottom views of the back of the four antenna straps and uses narrow-bandpass visible filters to isolate emission lines of copper (577 nm) and deuterium (656.1 nm). This diagnostic is based on the ORNL filterscope system currently in use on multiple devices. The system will be used to guide fast wave antenna conditioning, plasma operation and provide insight into future antenna upgrades on DIII-D.
