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Contaminant reduction by ventilation in a confined space model - toxic concentrations versus oxygen deficiency.

Authors
Garrison-RP; Lee-K; Park-C
Source
Am Ind Hyg Assoc J 1991 Dec; 52(12):542-546
NIOSHTIC No.
00204886
Abstract
A study was conducted to test and evaluate ventilation performance for air contaminants in a confined space (CS) model at concentrations much lower than those that cause oxygen deficiency. Isobutylene (115117) (IBE) was selected to simulate toxic concentrations because it was relatively safe to use and relatively easy to monitor. Data were obtained at several locations in a CS cubical model with variable ventilation mode, volume flow rate, and ventilation inlet/outlet elevations. The results indicated that ventilation causes contaminant reduction in a generally similar manner across a broad range of concentrations, from potentially toxic to oxygen deficient levels. Supply ventilation was generally more effective than exhaust ventilation for reducing contaminant concentrations ranging from the simulated toxic levels of IBE tested to much higher levels associated with oxygen deficiency. The authors conclude that specific empirical data may have good accuracy for some CS ventilation situations and may have limited accuracy for other contaminant conditions.
Keywords
NIOSH-Publication; Air-quality-monitoring; Accident-prevention; Ventilation-systems; Air-quality-control; Toxic-gases; Confined-spaces; Simulation-methods
CODEN
AIHAAP
CAS No.
115-11-7
Publication Date
19911201
Document Type
Journal Article
Fiscal Year
1992
NTIS Accession No.
NTIS Price
Issue of Publication
12
ISSN
0002-8894
Source Name
American Industrial Hygiene Association Journal
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