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http://dx.doi.org/10.3795/KSME-A.2004.28.2.189

Finite Element Analysis of Hydrogen Concentration for Blister Growth Estimation of CANDU Pressure Tube  

Huh, Nam-Su (성균관대학교 기계공학부)
Kim, Yun-Jae (고려대학교 기계공학과)
Kim, Young-Jin (한국원자력연구소)
Kim, Young-Seok (한국원자력연구소)
Cheong, Yong-Moo (성균관대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.2, 2004 , pp. 189-195 More about this Journal
Abstract
The pressure tubes, which contain high temperature heavy water and fuel, are within the core of a CANDU nuclear reactor, and are thus subjected to high stresses, temperature gradient, and neutron flux. Further, it is well known that pressure tubes of cold-worked Zr-2.5Nb materials result in hydrogen diffusion, which create fully-hydrided regions (frequently called Blister). Thus a proper investigation of hydrogen diffusion within zirconium-alloy nuclear components, such as CANDU pressure tube and fuel channels is essential to predict the structural integrity of these components. In this respect, this paper presents numerical investigation of hydrogen diffusion to quantify the hydrogen concentration fur blister growth of CANDU pressure tube. For this purpose, coupled temperature-hydrogen diffusion analyses are performed by means of two-dimensional finite element analysis. Comparison of predicted temperature field and blister with published test data shows good agreement.
Keywords
Blister; Hydride; Hydrogen Diffusion; CANDU Pressure Tube; Temperature Gradient; Zr-2.5Nb Alloy;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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