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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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Fusion Science and Technology
Latest News
Securing the advanced reactor fleet
Physical protection accounts for a significant portion of a nuclear power plant’s operational costs. As the U.S. moves toward smaller and safer advanced reactors, similar protection strategies could prove cost prohibitive. For tomorrow’s small modular reactors and microreactors, security costs must remain appropriate to the size of the reactor for economical operation.
Tai T. Pham, Mohamed S. El-Genk
Fusion Science and Technology | Volume 61 | Number 1 | January 2012 | Pages 343-348
Modeling and Simulations | Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems | doi.org/10.13182/FST12-A13443
Articles are hosted by Taylor and Francis Online.
This paper investigates the interaction of energetic solar protons measured by the Geostationary Operational Environmental Satellites (GOES), with the aluminum shielding structure of different thicknesses and calculates the dose distribution inside an tissue equivalent phantom inside the aluminum structure. In addition to the incident energetic protons, the major contributors to the total dose inside the phantom are the secondary protons and neutrons generated by spallation reactions in the aluminum structure and the phantom. Three modes of incidence of source protons are considered: center seeking, planar, and isotropic. The center seeking mode is the most conservative, resulting in the highest dose values and distribution inside the phantom, compared to those at the phantom's outer surface. Both the planar and isotropic modes result in much lower dose values that are more evenly distributed throughout the phantom.