Survivability assessment of Viton in safety-related equipment under simulated severe accident environments

被引：4
|
作者：
Ryu, Kyungha [1 ]
Song, Inyoung [2 ]
Lee, Taehyun [1 ]
Lee, Sanghyuk [1 ]
Kim, Youngjoong [1 ]
Kim, Ji Hyun [2 ]
机构：
[1] Korea Inst Machinery & Mat, Res Div Environm & Energy Syst, Dept Nucl Equipment Safety, 156 Gajeongbuk Ro, Daejeon 34103, South Korea
[2] Ulsan Natl Inst Sci & Technol, Sch Mech Aerosp & Nucl Engn, Dept Nucl Engn, Ulsan 44919, South Korea
来源：
NUCLEAR ENGINEERING AND TECHNOLOGY | 2018年 / 50卷 / 05期
关键词：
Equipment Survivability; Severe Accident; Thermal Degradation; Thermal Lag Analysis; Viton;
D O I：
10.1016/j.net.2018.02.009
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：
To evaluate equipment survivability of the polymer Viton, used in sealing materials, the effects of its thermal degradation were investigated in severe accident (SA) environment in a nuclear power plant. Viton specimens were prepared and thermally degraded at different SA temperature profiles. Changes in mechanical properties at different temperature profiles in different SA states were investigated. The thermal lag analysis was performed at calculated convective heat transfer conditions to predict the exposure temperature of the polymer inside the safety-related equipment. The polymer that was thermally degraded at postaccident states exhibited the highest change in its mechanical properties, such as tensile strength and elongation. (C) 2018 Korean Nuclear Society, Published by Elsevier Korea LLC.
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页码：683 / 689
页数：7
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