Comparison of numerical and semi-analytical analyses of temperature fields of loaded dry casks

被引:0
|
作者
Peridis, M. [1 ]
Stuke, M. [2 ]
机构
[1] Tech Univ Munich, Chair Nucl Technol, Boltzmannstr 15, D-85748 Garching, Germany
[2] GRS gGmbH, Boltzmannstr 14, D-85748 Garching, Germany
关键词
D O I
10.3139/124.200074
中图分类号
TL [原子能技术]; O571 [原子核物理学];
学科分类号
0827 ; 082701 ;
摘要
A key parameter to predict the integrity of the fuel rod cladding during dry storage is the temperature. Almost all degradation mechanisms are temperature dependent. A realistic prediction of the temperature field at a given time for the loaded cask is needed to investigate predictions for long-term degradation mechanisms properly. Overly conservative temperature estimates with the purpose to assure peak cladding temperatures within technical specifications might lead to non-justified, even counterproductive conclusions. In this work, we present two modelling approaches used to calculate temperature fields of loaded casks. One approach is a detailed numerical simulation via a specific code, and the second is a semi-analytical approach focusing on a faster and feasible calculation. Steady-state and transient calcidations are compared and discussed for both modelling approaches.
引用
收藏
页码:444 / 451
页数:8
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