Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage

Detalhes bibliográficos
Autor(a) principal: FERNANDES, S.M.C.
Data de Publicação: 2017
Outros Autores: CORREA, O.V., SOUZA, J.A. de, RAMANATHAN, L.V., ANTUNES, R.A., OLIVEIRA, M.C.L. de, EUROPEAN RESEARCH REACTOR CONFERENCE
Tipo de documento: Artigo de conferência
Título da fonte: Repositório Institucional do IPEN
Texto Completo: http://repositorio.ipen.br/handle/123456789/28100
Resumo: Conversion coatings have been used to protect aluminium surfaces from corroding. Hence use of this type of coating was considered to protect the aluminium cladding of spent research reactor fuels during extended wet storage. A conventional chemical process, as opposed to an electrochemical process, is preferred due to the shape of the fuel and its high radioactivity. In this context hydrotalcite (HTC) and boehmite coatings were considered. This paper presents the results of further development of HTC coatings, from the stand point of eventually being able to coat highly radioactive spent fuels using remote handling equipment. More specifically: (a) preparation of HTC coatings from different baths on AA 6061 alloy surfaces that were given pre-treatments to simulate spent fuel surfaces; (b) characteristics of the HTC coatings as a function of bath temperature; (c) corrosion behaviour of HTC coated AA 6061 alloy; (d) results of field studies in which dummy fuel elements, consisting of Al alloy plates coated with HTC from different baths (with or without post coating treatments), were immersed in the IEA-R1 reactor???s spent fuel basin for periods of up to 2 years. This study demonstrates that Al surfaces can be coated with HTC using an allroom temperature process. The field tests revealed marked increase in corrosion resistance of HTC coated plates. The mechanism of corrosion protection is discussed and a mock-up arrangement to remotely handle dummy-fuel elements to pre-treat, coat with HTC and post-treat is presented.
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spelling 2017-12-05T13:05:09Z2017-12-05T13:05:09ZMay 14-18, 2017http://repositorio.ipen.br/handle/123456789/28100Conversion coatings have been used to protect aluminium surfaces from corroding. Hence use of this type of coating was considered to protect the aluminium cladding of spent research reactor fuels during extended wet storage. A conventional chemical process, as opposed to an electrochemical process, is preferred due to the shape of the fuel and its high radioactivity. In this context hydrotalcite (HTC) and boehmite coatings were considered. This paper presents the results of further development of HTC coatings, from the stand point of eventually being able to coat highly radioactive spent fuels using remote handling equipment. More specifically: (a) preparation of HTC coatings from different baths on AA 6061 alloy surfaces that were given pre-treatments to simulate spent fuel surfaces; (b) characteristics of the HTC coatings as a function of bath temperature; (c) corrosion behaviour of HTC coated AA 6061 alloy; (d) results of field studies in which dummy fuel elements, consisting of Al alloy plates coated with HTC from different baths (with or without post coating treatments), were immersed in the IEA-R1 reactor???s spent fuel basin for periods of up to 2 years. This study demonstrates that Al surfaces can be coated with HTC using an allroom temperature process. The field tests revealed marked increase in corrosion resistance of HTC coated plates. The mechanism of corrosion protection is discussed and a mock-up arrangement to remotely handle dummy-fuel elements to pre-treat, coat with HTC and post-treat is presented.Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-12-05T13:05:09Z No. of bitstreams: 1 23403.pdf: 765294 bytes, checksum: 334e1ff09ab669f383b16ab96cc211bd (MD5)Made available in DSpace on 2017-12-05T13:05:09Z (GMT). No. of bitstreams: 1 23403.pdf: 765294 bytes, checksum: 334e1ff09ab669f383b16ab96cc211bd (MD5)1-10European Nuclear SocietyCoatings to protect spent aluminium-clad research reactor fuel during extended wet storageinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectRRFMIBrussels, BelgiumRotterdam, NetherlandsFERNANDES, S.M.C.CORREA, O.V.SOUZA, J.A. deRAMANATHAN, L.V.ANTUNES, R.A.OLIVEIRA, M.C.L. deEUROPEAN RESEARCH REACTOR CONFERENCEinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN234032017FERNANDES, S.M.C.CORREA, O.V.SOUZA, J.A. deRAMANATHAN, L.V.17-12Proceedings173348824895FERNANDES, S.M.C.:1733:730:SCORREA, O.V.:488:730:NSOUZA, J.A. 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dc.title.pt_BR.fl_str_mv Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
title Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
spellingShingle Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
FERNANDES, S.M.C.
title_short Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
title_full Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
title_fullStr Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
title_full_unstemmed Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
title_sort Coatings to protect spent aluminium-clad research reactor fuel during extended wet storage
author FERNANDES, S.M.C.
author_facet FERNANDES, S.M.C.
CORREA, O.V.
SOUZA, J.A. de
RAMANATHAN, L.V.
ANTUNES, R.A.
OLIVEIRA, M.C.L. de
EUROPEAN RESEARCH REACTOR CONFERENCE
author_role author
author2 CORREA, O.V.
SOUZA, J.A. de
RAMANATHAN, L.V.
ANTUNES, R.A.
OLIVEIRA, M.C.L. de
EUROPEAN RESEARCH REACTOR CONFERENCE
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv FERNANDES, S.M.C.
CORREA, O.V.
SOUZA, J.A. de
RAMANATHAN, L.V.
ANTUNES, R.A.
OLIVEIRA, M.C.L. de
EUROPEAN RESEARCH REACTOR CONFERENCE
description Conversion coatings have been used to protect aluminium surfaces from corroding. Hence use of this type of coating was considered to protect the aluminium cladding of spent research reactor fuels during extended wet storage. A conventional chemical process, as opposed to an electrochemical process, is preferred due to the shape of the fuel and its high radioactivity. In this context hydrotalcite (HTC) and boehmite coatings were considered. This paper presents the results of further development of HTC coatings, from the stand point of eventually being able to coat highly radioactive spent fuels using remote handling equipment. More specifically: (a) preparation of HTC coatings from different baths on AA 6061 alloy surfaces that were given pre-treatments to simulate spent fuel surfaces; (b) characteristics of the HTC coatings as a function of bath temperature; (c) corrosion behaviour of HTC coated AA 6061 alloy; (d) results of field studies in which dummy fuel elements, consisting of Al alloy plates coated with HTC from different baths (with or without post coating treatments), were immersed in the IEA-R1 reactor???s spent fuel basin for periods of up to 2 years. This study demonstrates that Al surfaces can be coated with HTC using an allroom temperature process. The field tests revealed marked increase in corrosion resistance of HTC coated plates. The mechanism of corrosion protection is discussed and a mock-up arrangement to remotely handle dummy-fuel elements to pre-treat, coat with HTC and post-treat is presented.
publishDate 2017
dc.date.evento.pt_BR.fl_str_mv May 14-18, 2017
dc.date.accessioned.fl_str_mv 2017-12-05T13:05:09Z
dc.date.available.fl_str_mv 2017-12-05T13:05:09Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://repositorio.ipen.br/handle/123456789/28100
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dc.publisher.none.fl_str_mv European Nuclear Society
publisher.none.fl_str_mv European Nuclear Society
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