Influence of particle sinze in the lung dosimetry
Description
According to the ICRP lung model the deposition site of the inhaled particles depends on the activity or mass median aerodynamic diameters (AMAD, MMAD) of the aerosol particle size distribution. Based on the standard assumption that the AMAD of the distribution is 1 micrometer and assigning three different solubility classes, secondary limits have been derived for a well characterized individual called reference man. Variations in both particle size and solubility classification of the aerosol generated at the various installations may implay in different amounts of activity in the workers' lung than would be expected according to ICRP. This paper stresses the necessity to derive special limits for every Brazilian fuel cycle istallation according to the particle size analysis performed at different occupational areas. (author)
Abstract (Portuguese)
De acordo com o modelo do pulmao do ICRP o local de deposicao de particulas inaladas do diametro aerodinamico medio, em atividade ou massa (AMAD, MMAD), da distribuicao de tamanho de particulas. Limites secundarios foram derivados para o homem padrao, assumindo um AMAD igual a 1 micrometro e as 3 classes de solubilidade definidas pelo ICRP. Variacoes no tamanho e na classificacao quanto a solubilidade do aerosol gerado nas varias instalacoes do ciclo do combustivel nuclear influem na quantidade de atividade depositada e retida no pulmao. Esse trabalho enfatiza a necessidade de se derivar limites especiais para cada instalacao brasileira do ciclo do combustivel de acordo com a distribuicao de tamanho de particulas de aerosois gerados nas varias areas ocupacionais. (autor)Additional details
Additional titles
- Original title (Portuguese)
- Influencia do tamanho de particula na dosimetria pulmonar
Publishing Information
- Imprint Title
- Proceedings of the 2. General Congress of Nuclear Energy - v. 3
- Imprint Pagination
- 498 p.
- Journal Page Range
- p. 121-128.
- Report number
- INIS-BR--1147(v.3)
Conference
- Title
- 2. General Congress of Nuclear Energy.
- Dates
- 24-29 Apr 1988.
- Place
- Rio de Janeiro, RJ (Brazil).
INIS
- Country of Publication
- Brazil
- Country of Input or Organization
- Brazil
- INIS RN
- 19067580
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AEROSOLS; DOSIMETRY; FUEL CYCLE CENTERS; LIMITING VALUES; LUNGS; PARTICLE SIZE; RETENTION
- Descriptors DEC
- BODY; COLLOIDS; DISPERSIONS; NUCLEAR FACILITIES; ORGANS; RESPIRATORY SYSTEM; SIZE; SOLS
Optional Information
- Notes
- Imprint:Anais do 2. Congresso Geral de Energia Nuclear - v. 3.