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Document ID (ISN)59765
CIS number 93-551
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1992
Convention or series no.
Author(s) Grenier M.G., Hardcastle S.G., Kunchur G., Butler K.
Title The use of tracer gases to determine dust dispersion patterns and ventilation parameters in a mineral processing plant
Bibliographic information June 1992, Vol.53, No.6, p.387-394. Illus. 10 ref.
Abstract 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.
Descriptors (primary) tracer gases; airborne dust; sampling methods; air sampling; mechanical ventilation
Descriptors (secondary) air movement; comparative analysis; respirable dust; fluorspar
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Heating, ventilation and climate
Broad subject area(s) Chemical safety
Browse category(ies) Ventilation