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Base de datos CISDOC

ID (ISN) del documento24748
Número CIS 76-411
ISSN - Título de la serie 0002-8894 - American Industrial Hygiene Association Journal
Año 1975
Número de serie
Autor(es) George A.C., Hinchliffe L., Sladowski R.
Título Size distribution of radon daughter particles in uranium mine atmospheres.
Información bibliográfica June 1975, Vol.36, No.6, p.484-490. Illus. 26 ref.
Resumen The size distribution of radon daughters was measured in several uranium mines using 4 compact diffusion batteries and a round jet cascade impactor. Simultaneously, measurements were made of uncombined fractions of radon daughters, radon concentration, working level and particle concentration. The size distributions found for radon daughters were log normal. The activity median diameters ranged from 0.09 to 0.3µm (mean 0.17µm). Uncombined fractions expressed in accordance with the ICRP definition ranged from 0.004 to 0.16 (mean 0.04). The radon daughter sizes in these mines are greater than those assumed by various authors in calculating respiratory tract dose. The disparity may reflect the widening use of diesel-powered equipment in large uranium mines. Before generalisations can be made about the size distribution of radon daughters, the environmental characteristics of uranium mines must be studied individually.
Descriptores (primarios) polvos en suspensión aérea; minas de uranio; productos de filiales del radón; reparto granulométrico
Descriptores (secundarios) dosimetría en el puesto de trabajo; aparatos de muestreo; radón; muestreo con impactador en cascada
Tipo de documento -
Tema(s) Radiaciones
Broad subject area(s)
Navegación por categoria(s) Radon
Mining and quarrying
Inorganic substances