|Document ID (ISN)||59765|
|ISSN - Serial title
||0002-8894 - American Industrial Hygiene Association Journal
|Convention or series no.
||Grenier M.G., Hardcastle S.G., Kunchur G., Butler K.
||The use of tracer gases to determine dust dispersion patterns and ventilation parameters in a mineral processing plant
||June 1992, Vol.53, No.6, p.387-394. Illus. 10 ref.
||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.
||tracer gases; airborne dust; sampling methods; air sampling; mechanical ventilation
||air movement; comparative analysis; respirable dust; fluorspar
||D - Periodical articles
|Country / State or Province||Canada|
||Heating, ventilation and climate
|Broad subject area(s)