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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
July 2025
Latest News
DOE issues new NEPA rule and procedures—and accelerates DOME reactor testing
Meeting a deadline set in President Trump’s May 23 executive order “Reforming Nuclear Reactor Testing at the Department of Energy,” the DOE on June 30 updated information on its National Environmental Policy Act (NEPA) rulemaking and implementation procedures and published on its website an interim final rule that rescinds existing regulations alongside new implementing procedures.
J. F. Latkowski, Ryan P. Abbott, Ray Laning, Steve Manson, Kevin Morris, Susana Reyes, Eric Williams
Fusion Science and Technology | Volume 52 | Number 4 | November 2007 | Pages 807-811
Technical Paper | Nuclear Analysis and Experiments | doi.org/10.13182/FST07-A1590
Articles are hosted by Taylor and Francis Online.
During the past two years a team at Lawrence Livermore National Laboratory (LLNL) has used Raytheon's TopAct code to convert a variety of CAD models into TART and MCNP Monte Carlo input files. TopAct offers the possibility of enormous savings by largely eliminating the need for manual generation of models via combinatorial geometry. Also, TopAct is expected to deliver improvements in quality assurance and configuration management. We detail our experiences with various test problems. The reader will see the steady improvements that have been made in the conversion process and understand our expectations for further progress. Finally, we explain how TopAct will become a cornerstone of our future neutronics efforts.