Molten salts as stripping media for radioactive superficial decontamination

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dc.contributor.authorLAINETTI, PAULO E. de O.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-03-14T13:59:45Z
dc.date.available2017-03-14T13:59:45Z
dc.date.issued2016pt_BR
dc.description.abstractThe main practical difficulty associated to the task of the dismantling and decommissioning of the IPEN’s old nuclear fuel cycle facilities has been the big amount of radioactive waste generated in the dismantling operations. The waste is mainly in the form of contaminated carbon steel structures. In the IPEN, the presence of contamination in the equipments, structures and buildings, although restricted to low and medium activity levels, constituted an important concern due, on one hand, to the great volume of radioactive wastes generated during the operations. On the other hand, it should be outstanding that the capacity of radioactive wastes stockpiling in IPEN found been exhausted. In function of the large waste volume generated in the dismantling operations, the main concerns and focuses of research and technological development in the IPEN’s Chemical and Environmental Center—CQMA have been the effluent and waste treatment subjects, besides the development of some special decontamination techniques, since most old nuclear fuel cycle facilities are installed in the CQMA’s area. The reduction of the radioactive waste volume has a significant impact in the decommissioning costs and in the amount of material to be stored. The mentioned steel structures, during the operations and after ten or twelve years after the facilities shut down, have presented severe corrosion. In the past, to protect them, several layers of paint were applied. Traditional decontamination methods were tried, such as acid pickling, alkaline washing and ultrasonic baths. Nevertheless, these methods have failed to reach effective decontamination. In this paper, we described some aspects and problems in decommissioning of IPEN’s nuclear fuel cycle facilities and it is presented an innovative method for radioactive superficial decontamination of steel structures using different molten salt compositions and temperatures as stripping media.pt_BR
dc.format.extent674-680pt_BR
dc.identifier.citationLAINETTI, PAULO E. de O. Molten salts as stripping media for radioactive superficial decontamination. <b>Journal of Energy and Power Engineering</b>, v. 10, n. 11, p. 674-680, 2016. DOI: <a href="https://dx.doi.org/10.17265/1934-8975/2016.11.004">10.17265/1934-8975/2016.11.004</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27159.
dc.identifier.doi10.17265/1934-8975/2016.11.004pt_BR
dc.identifier.fasciculo11pt_BR
dc.identifier.issn1934-8975pt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27159
dc.identifier.vol10pt_BR
dc.relation.ispartofJournal of Energy and Power Engineeringpt_BR
dc.rightsopenAccesspt_BR
dc.subjectactivity levels
dc.subjectcarbon steels
dc.subjectcontamination
dc.subjectcorrosion
dc.subjectcorrosion products
dc.subjectcost
dc.subjectdecommissioning
dc.subjectdecontamination
dc.subjectfuel cycle
dc.subjectfuel cycle centers
dc.subjectisotope ratio
dc.subjectmolten salts
dc.subjectpaints
dc.subjectpickling
dc.subjectradioactive wastes
dc.subjectstripping
dc.subjectthorium 232
dc.subjectwashing
dc.subjectwaste processing
dc.titleMolten salts as stripping media for radioactive superficial decontaminationpt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorPAULO ERNESTO DE OLIVEIRA LAINETTI
ipen.codigoautor149
ipen.contributor.ipenauthorPAULO ERNESTO DE OLIVEIRA LAINETTI
ipen.date.recebimento17-03pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.ipendoc23510pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication16bd691d-081f-477a-b5ef-8b3828debf66
relation.isAuthorOfPublication.latestForDiscovery16bd691d-081f-477a-b5ef-8b3828debf66
sigepi.autor.atividadeLAINETTI, PAULO E. DE O.:149:520:Spt_BR
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