Structural analysis for the determination of design variables of spent nuclear fuel disposal canister |
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Authors: | Youngjoo Kwon Shinuk Kang Jongwon Choi Chulhyung Kang |
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Affiliation: | 1. Department of Mechano-Informatics & Design Engineering, Hongik University, Jochiwon-eup, Yeonkigun, 339-701, Chungnam, Korea 2. Korea Atomic Energy Research Institute, Korea
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Abstract: | This paper presents the results of a structural analysis to determine design variables such as the inner basket array type,
and thicknesses of the outer shell, and the lid and bottom of a spent nuclear fuel disposal canister. The canister construction
type introduced here is a solid structure with a cast iron insert and a corrosion resistant overpack, which is designed for
the spent nuclear fuel disposal in a deep repository in the crystalline bedrock, entailing an evenly distributed load of hydrostatic
pressure from the ground water and high swelling pressure from the bentonite buffer. Hence, the canister must be designed
to withstand these high pressure loads. Many design variables may affect the structural strength of the canister. In this
study, among those variables, the array type of inner baskets and thicknesses of outer shell and lid and bottom are attempted
to be determined through a linear structural analysis. Canister types studied here are one for the pressurized water reactor
(PWR) fuel and another for the Canadian deuterium and uranium reactor (CANDU) fuel. |
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Keywords: | |
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