Evaluation of Direct Reading Instrument and Filtration Technology Performance to Improve Strategies to Control Workers’ Exposure to Ozone Abstract Ozone is a highly toxic reactive gas that affects the respiratory system, even at low concentrations, and causes significant lung damage. Nevertheless, this gas is increasingly being utilized in industrial and environmental processes, because the technologies that employ it are considered clean or green. Ozone is also a byproduct of high-voltage processes and equipment such as arc, laser beam and plasma arc welding.There is a lack of information concerning the performance of ozone removal systems and the various direct reading instruments for measuring ozone concentrations available in Québec.This project aims to assess the performance of various direct reading instruments and ozone purification systems available in Québec. The influence of certain parameters (ventilation flow, relative humidity) on the performance of these systems will also be studied at various concentrations of ozone.The results will help in selecting the appropriate devices for each use. The information will be helpful in better protecting workers in environments that may be contaminated with ozone. It could also be applied to develop new guidelines and procedures for ozone exposure control strategies. Other Project(s) You May be Interested in The use of computerised evaluations of ventilation systems to improve indoor air qualityTracer-gas studies of the recirculation of exhaust air in urban buildingsVentilation guide for air quality in industrial workplacesMaintenance guide for the prevention of microbial contamination in ventilation systemsInfluence of the height and location of chimneys and utility huts on the contamination of fresh-air intakes: In situ laboratory studyCriteria for initiating the cleaning of heating, ventilation and air conditioning systems of non-industrial buildingsThe prevention of poisoning in forage silosAnalytical evaluation of the dispersion of polluting emissions from building stacksPreliminary study of the behaviour of silo gas and ventilation in a scale model of a forage siloValidation of the criteria for initiating the cleaning of heating, ventilation and air conditioning (HVAC) systems under real conditionsThe impact of adjacent buildings on the dispersion of emissions from buildings: A numerical (CFD) and experimental approach in a wind tunnelTower silo ventilation taking the chute into considerationElimination of toxic gases and vapours by oxidation — laboratory development of a methodology for evaluating air purification techniques Additional Information Type: Project Number: 2017-0047 Status: Completed Year of completion: 2023 Research Field: Chemical and Biological Hazard Prevention Team: Fariborz Haghighat (Université Concordia)Chang-Seo Lee (Université Concordia)Ali Bahloul (IRSST)Mélanie Huard (IRSST)