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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
The current status of heat pipe R&D
Idaho National Laboratory under the Department of Energy–sponsored Microreactor Program recently conducted a comprehensive phenomena identification and ranking table (PIRT) exercise aimed at advancing heat pipe technology for microreactor applications.
Friedrich Helm, Georg Henneges
Nuclear Technology | Volume 71 | Number 1 | October 1985 | Pages 68-81
Technical Paper | Fission Reactor | doi.org/10.13182/NT85-A33710
Articles are hosted by Taylor and Francis Online.
In the critical assembly SNEAK 12B, the reactivity effects of material movements occurring in a postulated fast reactor accident were investigated in a test zone composed of PuO2UO2 rod bundles. The experimental program included addition and removal of fuel, addition of steel between the fuel rods, and vertical and horizontal relocation of fuel. The measured reactivity changes could be well reproduced by eigenvalue calculations in SN transport theory, while first-order perturbation transport theory and diffusion theory in most cases yielded substantial deviations.
