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Base de datos CISDOC

ID (ISN) del documento59765
Número CIS 93-551
ISSN - Título de la serie 0002-8894 - American Industrial Hygiene Association Journal
Año 1992
Número de serie
Autor(es) Grenier M.G., Hardcastle S.G., Kunchur G., Butler K.
Título The use of tracer gases to determine dust dispersion patterns and ventilation parameters in a mineral processing plant
Información bibliográfica June 1992, Vol.53, No.6, p.387-394. Illus. 10 ref.
Resumen An assessment of the effectiveness of tracer gases as a reliable supplement to conventional air monitoring and ventilation measurements was conducted in a fluorspar milling plant. A tracer gas was used as a surrogate substance to analyse the direction and rate of spread of contaminants from various potential dust production points in the plant. Time-weighted average dust concentrations varied between 0.18 and 0.57mg/m3 for total dust and 0.04 and 0.20mg/m3 for quartz respirable dust, depending on the location. Correlation of these values with steady-state tracer gas concentrations yielded linear relationships with correlation coefficients of 0.95 and 0.87, respectively, for total and quartz dust. Results indicate, therefore, that tracer gases may help model the spread of airborne respirable dust from point sources. These tracer gas releases also allowed the simultaneous quantitative determination of air residence times and contaminant clearance times from the building.
Descriptores (primarios) trazadores de gas; polvos en suspensión aérea; técnicas para el muestreo; toma de muestras del aire; ventilación mecánica
Descriptores (secundarios) movimiento del aire; análisis comparativo; polvos respirables; fluorina
Tipo de documento D - Artículos periódicos
País / Estado o ProvinciaCanadá
Tema(s) Ambiente térmico, ventilación
Broad subject area(s) Riesgos químicos
Navegación por categoria(s) Ventilation