Pore pressure calculation of the UO2 high burnup structure
| Autor: | Zhong Xiao, Lijun Gao, Jiyang Yu, S. Y. Jiang, Bingde Chen |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Cladding (metalworking)
Nuclear and High Energy Physics Materials science business.industry Mechanical Engineering Uranium dioxide Structural engineering Mechanics Pore water pressure Surface coating chemistry.chemical_compound Nuclear Energy and Engineering chemistry General Materials Science Deformation (engineering) Safety Risk Reliability and Quality Energy source business Porosity Waste Management and Disposal Burnup |
| Zdroj: | Nuclear Engineering and Design. 260:11-15 |
| ISSN: | 0029-5493 |
| DOI: | 10.1016/j.nucengdes.2013.03.028 |
| Popis: | UO 2 high burnup structure has an important impact on fuel behavior, especially in case of reactivity initiated accident (RIA). Pore relaxation enhances local fuel swelling and puts additional load to the fuel cladding, which makes fuel more susceptible to pellet–cladding mechanical interaction induced failure. Therefore, pore pressure calculation becomes vital when evaluating the fuel failure. In this paper pore pressure is calculated as a function of pellet radial local burnup based on the basic characteristics of HBS using Ronchi's correlation. The results indicate that pore pressure will approach a stable value as HBS is developing. A best approximated C value of 55 N/m is recommended for pore pressure calculation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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