Radon concentrations on the nuclear and radioactive instalations of nuclear reactor center – CRPQ/IPEN

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dc.contributor.authorSILVA, PAULO S.C. dapt_BR
dc.contributor.authorCAMPOS, MARCIA P. dept_BR
dc.contributor.authorREIS, GUILHERME de L.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoINTERNATIONAL NUCLEAR ATLANTIC CONFERENCEpt_BR
dc.date.accessioned2020-03-11T18:23:54Z
dc.date.available2020-03-11T18:23:54Z
dc.date.eventoOctober 21-25, 2019pt_BR
dc.description.abstractNuclear and radioactive workers are normally exposed to dose resulting from their day by day activities. Besides that, the ubiquitous radon distribution can also contribute for the exposure rates. The radionuclide 222Rn is a noble gas belonging to the uranium series and its indoor concentration in the air depend on exhalation from surrounding soil and on exhalation from building materials. Radon emanating from porous building materials may achieve large relevance in areas with high uranium concentrations and areas with limited ventilation. The objective of this study was to evaluate the 222Rn concentrations in the radiochemistry and radiometric laboratories and in the reactor nuclear building of the Nuclear Reactor Center (CERPq) located in the Nuclear and Energy Research Institute (IPEN). Measurements were done by using a Radon Gas Monitor, model RAD7, produced by Durridge Company equipped with a solid state alpha detector and a passive method, with SSNTDs placed within small diffusion chambers, as detectors square pieces (2.5 cm × 2.5 cm) of CR 39 foils were used. The CR 39 detectors were etched in KOH 30% solution at 80 °C for 5.5 h in a constant temperature bath. After etching, the detectors were washed, dried, and scanned under a Carl Zeiss microscope to obtain the track density measurements. The activity concentrations varied from 52 to 103 Bq m 3 for the measured areas in CERPq. These values are in accordance with what is stablished by the World Health Organization for safe environments of 100 Bq m 3.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipIDFAPESP: 03/08146 2; 06/01112 3pt_BR
dc.event.siglaINACpt_BR
dc.format.extent105-115pt_BR
dc.identifier.citationSILVA, PAULO S.C. da; CAMPOS, MARCIA P. de; REIS, GUILHERME de L. Radon concentrations on the nuclear and radioactive instalations of nuclear reactor center – CRPQ/IPEN. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. <b>Proceedings...</b> Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 105-115. Disponível em: http://repositorio.ipen.br/handle/123456789/30903.
dc.identifier.orcidhttps://orcid.org/0000-0002-9351-9201
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/30903
dc.localRio de Janeiropt_BR
dc.local.eventoSantos, SPpt_BR
dc.publisherAssociação Brasileira de Energia Nuclearpt_BR
dc.rightsopenAccesspt_BR
dc.subjectbuildings
dc.subjectconcentration ratio
dc.subjectemanometers
dc.subjectetching
dc.subjectiear-1 reactor
dc.subjectlaboratories
dc.subjectradioactivity
dc.subjectradon 222
dc.titleRadon concentrations on the nuclear and radioactive instalations of nuclear reactor center – CRPQ/IPENpt_BR
dc.typeTexto completo de eventopt_BR
dspace.entity.typePublication
ipen.autorGUILHERME DE LIMA REIS
ipen.autorMARCIA PIRES DE CAMPOS
ipen.autorPAULO SERGIO CARDOSO DA SILVA
ipen.codigoautor13971
ipen.codigoautor1707
ipen.codigoautor2777
ipen.contributor.ipenauthorGUILHERME DE LIMA REIS
ipen.contributor.ipenauthorMARCIA PIRES DE CAMPOS
ipen.contributor.ipenauthorPAULO SERGIO CARDOSO DA SILVA
ipen.date.recebimento20-03
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc26535pt_BR
ipen.notas.internasProceedingspt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication3597b7b9-f880-4dc7-8cba-44b424164e2e
relation.isAuthorOfPublication8e972b33-456d-4e5d-937c-676cbf03f670
relation.isAuthorOfPublicationaa898df6-ea14-482c-bc29-b45954bb0542
relation.isAuthorOfPublication.latestForDiscoveryaa898df6-ea14-482c-bc29-b45954bb0542
sigepi.autor.atividadeREIS, GUILHERME de L.:13971:340:Npt_BR
sigepi.autor.atividadeCAMPOS, MARCIA P. de:1707:340:Npt_BR
sigepi.autor.atividadeSILVA, PAULO S.C. da:2777:320:Spt_BR
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