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

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. Chang...

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Main Authors:	Kyungha Ryu, Inyoung Song, Taehyun Lee, Sanghyuk Lee, Youngjoong Kim, Ji Hyun Kim
Format:	Article
Language:	English
Published:	Elsevier 2018-06-01
Series:	Nuclear Engineering and Technology
Online Access:	http://www.sciencedirect.com/science/article/pii/S1738573317305843

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spelling	doaj-3230233692324861a087559575fb737c2020-11-24T21:37:07ZengElsevierNuclear Engineering and Technology1738-57332018-06-01505683689Survivability assessment of Viton in safety-related equipment under simulated severe accident environmentsKyungha Ryu0Inyoung Song1Taehyun Lee2Sanghyuk Lee3Youngjoong Kim4Ji Hyun Kim5Research Division of Environmental and Energy Systems, Department of Nuclear Equipment Safety, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of KoreaDepartment of Nuclear Engineering, School of Mechanical, Aerospace, and Nuclear Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of KoreaResearch Division of Environmental and Energy Systems, Department of Nuclear Equipment Safety, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of KoreaResearch Division of Environmental and Energy Systems, Department of Nuclear Equipment Safety, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of KoreaResearch Division of Environmental and Energy Systems, Department of Nuclear Equipment Safety, Korea Institute of Machinery and Materials, 156, Gajeongbuk-Ro, Yuseong-Gu, Daejeon 34103, Republic of KoreaDepartment of Nuclear Engineering, School of Mechanical, Aerospace, and Nuclear Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea; Corresponding author.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. Keywords: Equipment Survivability, Severe Accident, Thermal Degradation, Thermal Lag Analysis, Vitonhttp://www.sciencedirect.com/science/article/pii/S1738573317305843
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Kyungha Ryu Inyoung Song Taehyun Lee Sanghyuk Lee Youngjoong Kim Ji Hyun Kim
spellingShingle	Kyungha Ryu Inyoung Song Taehyun Lee Sanghyuk Lee Youngjoong Kim Ji Hyun Kim Survivability assessment of Viton in safety-related equipment under simulated severe accident environments Nuclear Engineering and Technology
author_facet	Kyungha Ryu Inyoung Song Taehyun Lee Sanghyuk Lee Youngjoong Kim Ji Hyun Kim
author_sort	Kyungha Ryu
title	Survivability assessment of Viton in safety-related equipment under simulated severe accident environments
title_short	Survivability assessment of Viton in safety-related equipment under simulated severe accident environments
title_full	Survivability assessment of Viton in safety-related equipment under simulated severe accident environments
title_fullStr	Survivability assessment of Viton in safety-related equipment under simulated severe accident environments
title_full_unstemmed	Survivability assessment of Viton in safety-related equipment under simulated severe accident environments
title_sort	survivability assessment of viton in safety-related equipment under simulated severe accident environments
publisher	Elsevier
series	Nuclear Engineering and Technology
issn	1738-5733
publishDate	2018-06-01
description	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. Keywords: Equipment Survivability, Severe Accident, Thermal Degradation, Thermal Lag Analysis, Viton
url	http://www.sciencedirect.com/science/article/pii/S1738573317305843
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Survivability assessment of Viton in safety-related equipment under simulated severe accident environments

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