Use este identificador para citar ou linkar para este item: http://carpedien.ien.gov.br:8080/handle/ien/2725
Tipo: conferenceObject
Título: A critical review of the extremity monitoring program at the Instituto de Engenharia Nuclear in Brazil
Autor(es): Fajardo, Patricia Wieland
Rosa, Luiz Antonio Ribeiro da
Resumo: Eventually the cyclotron of the Instituto de Engenharia Nuclear (IEN) may need maintenance; Its components are made of copper and they become highly activated after irradiations producing extensive 65 Zn sources. The individual monitoring of the maintenance workers is based on film badges and TLD rings. Both systems are calibrated in terms of 'Photon Dose Equivalent' and the extremity dosemeter is not able to discriminate the gamma and beta contributions to the total dose. Conservatively, it was possible to estimate, using another extremity dosemeter, that beta doses received by the workers' hands are three times higher than the gamma doses. Considering this result, and the ring TL responses, it was possible to estimate Hp(0.07), in the case of the hands, for all the IEN cyclotron maintenance workers, since 1983. The results show that Hp(0.07) values are about 2.88 times higher than the previous reported extremity doses in mSv.
Palavras-chave: Dose equivalents
Partial body irradiation
Personel dosimetry
Personel monitoring
Radiation doses
Radiation protection
Idioma: eng
País: Brasil
Editor: Instituto de Engenharia Nuclear
Sigla da Instituição: IEN
Tipo de Acesso: openAccess
URI: http://carpedien.ien.gov.br:8080/handle/ien/2725
Data do documento: 1993
Aparece nas coleções:Gestão do Conhecimento Nuclear - Trabalhos de Congresso

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