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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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2024 ANS Annual Conference
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Las Vegas, NV|Mandalay Bay Resort and Casino
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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.
Biplab Ghosh, S. B. Degweker
Nuclear Science and Engineering | Volume 147 | Number 2 | June 2004 | Pages 167-175
Technical Paper | doi.org/10.13182/NSE04-A2426
Articles are hosted by Taylor and Francis Online.
Measurements of neutron flux in the laboratory are known to show significant departure from the inverse square law due to reflection of neutrons from the walls, floor, and ceiling of the laboratory. A simple model is developed to describe the flux distribution due to a point isotropic source in such a situation by treating the room as a cavity with reflecting walls. The model is exactly solvable for a spherical cavity and leads to a simple formula for the flux distribution. The formula thus derived shows good agreement with Monte Carlo computations. Small deviations of the formula from the computed results, particularly for thin walls, are explained as being caused by the anisotropy of the incoming angular distribution of the reflected flux.