Radon concentrations in a nuclear reactor center in Brazil

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dc.contributor.authorSILVA, PAULO S.C. dapt_BR
dc.contributor.authorCAMPOS, MARCIA P. dept_BR
dc.contributor.authorEL HAJJ, THAMMIRIS M.pt_BR
dc.contributor.authorREIS, GUILHERME de L.pt_BR
dc.coverageInternacionalpt_BR
dc.date.accessioned2022-03-17T12:35:23Z
dc.date.available2022-03-17T12:35:23Z
dc.date.issued2021pt_BR
dc.description.abstractRadiation workers are normally exposed to doses resulting from their day-to-day activities. Besides that, background radiation, such as radon, can contribute to the exposure rates. The radionuclide 222Rn is a noble gas belonging to the uranium series, and its indoor concentration in the air depends on the exhalation from surrounding soil and the exhalation from building materials. Radon exhaling from porous building materials containing high uranium concentrations can become a significant exposure factor in areas with limited ventilation. The objective of this study was to evaluate the 222Rn concentrations in the radiochemistry and radiometric laboratories in the nuclear reactor building of the Nuclear Reactor Center (CERPq) located in the Institute of Nuclear and Energy Research (IPEN), São Paulo, Brazil. Measurements were done using a Radon Gas Monitor, model RAD7, equipped with a solid-state alpha detector. A passive method (SSNTD) was also used, consisting of square pieces of C-39 foils (2.5 cm × 2.5 cm) placed within small diffusion chambers. 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 using a microscope to obtain the track density measurements. The activity concentrations measured with both techniques varied from 52 to 103 Bq m−3 in the studied areas of the CERPq. These values may be compared to the reference level of 100 Bq m−3 established by the World Health Organization to ensure safety environments.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.format.extent117-123pt_BR
dc.identifier.citationSILVA, PAULO S.C. da; CAMPOS, MARCIA P. de; EL HAJJ, THAMMIRIS M.; REIS, GUILHERME de L. Radon concentrations in a nuclear reactor center in Brazil. <b>Health Physics</b>, v. 121, n. 2, p. 117-123, 2021. DOI: <a href="https://dx.doi.org/10.1097/HP.0000000000001430">10.1097/HP.0000000000001430</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/32808.
dc.identifier.doi10.1097/HP.0000000000001430pt_BR
dc.identifier.fasciculo2pt_BR
dc.identifier.issn0017-9078pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9351-9201
dc.identifier.percentilfi51.47pt_BR
dc.identifier.percentilfiCiteScore72.00pt_BR
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/32808
dc.identifier.vol121pt_BR
dc.relation.ispartofHealth Physicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectradon 222
dc.subjectradiation doses
dc.subjectoccupational exposure
dc.subjectreactors
dc.titleRadon concentrations in a nuclear reactor center in Brazilpt_BR
dc.typeArtigo de periódicopt_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.recebimento22-03
ipen.identifier.fi2.922pt_BR
ipen.identifier.fiCiteScore2.8pt_BR
ipen.identifier.ipendoc28530pt_BR
ipen.identifier.iwosWoSpt_BR
ipen.range.fi1.500 - 2.999
ipen.range.percentilfi50.00 - 74.99
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.:13971:320:Npt_BR
sigepi.autor.atividadeCAMPOS, MARCIA P. de:1707:340:Npt_BR
sigepi.autor.atividadeSILVA, PAULO S.C. da:2777:310:Spt_BR
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