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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Denis E. Beller, Len J. Lorence, Michael T. Tobin
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 770-774
Inertial Fusion | doi.org/10.13182/FST91-A29438
Articles are hosted by Taylor and Francis Online.
Major applications of the Laboratory Microfusion Facility (LMF) will include nuclear effects simulation testing and commercial development of inertial fusion. Recent studies of the use of the LMF for x-ray effects experiments have demonstrated that this testing is possible at high-dose and dose rate with good fidelity because neutron effects can be minimized. To insure a basis for comparison between design studies at Sandia National Laboratories Albuquerque (SNLA), Lawrence Livermore National Laboratory (LLNL), and the Air Force Institute of Technology (AFIT), we developed a computational benchmark. The benchmark geometry includes a spherical photon scatterer and a conical neutron shield, both of LiH enriched to 96.5% 6Li. The benchmark x-ray source is a 15-keV Plankian spectrum, and the neutron source is mono-energetic 14.1-MeV neutrons. We compared results with the following computer codes and cross section libraries: MORSE and DABL69 at AFIT, TART and ENDL at LLNL, and MCNP and ENDL at SNLA. We present a comparison of the predicted x-ray, neutron, and n-gamma doses at a 3-m distant, 2-m diameter exposure plane. We compare total doses and peak dose rates; and we discuss differences in results.