Definitions
 1. In this Regulation, “airline respirator” means a respirator and air supply hose with a hood or helmet, a tight-fitting facepiece, or a loose-fitting facepiece or visor, that is supplied with compressed breathing air from a compressed breathing air system; (“appareil de protection respiratoire à adduction d’air”) “air-purifying respirator” means a respirator with an air-purifying filter, cartridge or canister that removes specific air contaminants by passing ambient air through the air-purifying element; (“appareil de protection respiratoire à épuration d’air”) “arsenic” means, (a) arsenic in its elemental form, (b) arsenic in inorganic compounds, except arsine, and (c) arsenic in organic form only where both inorganic and organic compounds of arsenic are present; (“arsenic”) “asbestos” means any of the following fibrous silicates: 1. Actinolite. 2. Amosite. 3. Anthophyllite. 4. Chrysotile. 5. Crocidolite. 6. Tremolite; (“amiante”) “assigned protection factor” means the anticipated level of respiratory protection that would be provided by a properly functioning respirator or class of respirators to properly fitted and trained users; (“facteur de protection caractéristique”) “C” or “ceiling limit” means the maximum airborne concentration of a biological or chemical agent to which a worker may be exposed at any time; (“C”, “valeur C” ou “valeur plafond”) “Code for Medical Surveillance” means the Code for Medical Surveillance for Designated Substances in Ontario Regulation 490/09 (2019) under the Occupational Health and Safety Act published by the Ministry, dated 2019 and available on a website of the Government of Ontario; (“code régissant la surveillance médicale”) “coke oven emissions” means the benzene soluble fraction of total particulate matter of the substances emitted into the atmosphere from metallurgical coke ovens including condensed vapours and solid particulates; (“fumées de four à coke”) “direct-reading instrument” means a combustible gas indicator, oxygen meter, colorimetric indicator tube, organic vapour monitor or other instrument that can immediately detect and provide a measurement of an airborne chemical agent; (“instrument à lecture directe”) “exposure” means exposure by inhalation, ingestion, skin absorption or skin contact; (“exposition”) “HEPA filter” means a high efficiency particulate air filter that is at least 99.97 per cent efficient in removing particles with a mean aerodynamic diameter of 0.3 micrometres from the air; (“filtre HEPA”) “IDLH atmosphere” means an atmosphere that poses an immediate threat to life or that will cause irreversible adverse health effects or impair a worker’s ability to escape from the environment; (“atmosphère DIVS”) “isocyanates” means organic isocyanates; (“isocyanates”) “joint health and safety committee” includes, in addition to a joint health and safety committee established under the Act, (a) a
committee of like nature described in subsection 9 (4) of the Act, (b) an arrangement, program or system described in subsection 9 (4) of the Act in which workers or their representatives participate; (“comité mixte sur la santé et la sécurité”) “lead” means elemental lead, inorganic compounds of lead and organic compounds of lead; (“plomb”) “maximum use concentration” means the maximum concentration of an airborne designated substance that a respirator can be expected to protect a worker using the respirator from, as determined by multiplying the assigned protection factor set out in Schedule 2 for the respirator, or, if applicable, the simulated workplace protection factor for the respirator, by the occupational exposure limit set out for the substance in Table 1; (“concentration d’utilisation maximale”) “mercury” means elemental mercury, inorganic compounds of mercury and organic compounds of mercury; (“mercure”) “metallurgical coke ovens” means a coke oven battery, including topside and its machinery, coke side and its machinery, pusher side and its machinery, the battery ends, the wharf and the screening station; (“fours à coke métallurgique”) “NIOSH” means the National Institute for Occupational Safety and Health; (“NIOSH”) “powered air-purifying respirator” means an air-purifying respirator that, by means of a powered blower worn by the user, passes ambient air through an air-purifying element and then supplies purified air to a helmet, hood, facepiece or visor worn by the user; (“appareil de protection respiratoire à épuration d’air à ventilation assistée”) “Provincial Physician” means the person employed in the Ministry as the Provincial Physician; (“médecin provincial”) “qualitative fit test” means a qualitative fit test method set out in Annex B of CSA Standard CAN/CSA-Z94.4-18, Selection, Use and Care of Respirators (September 2018); (“essai d’ajustement qualitatif”) “quantitative fit test” means a quantitative fit test method set out in Annex C of CSA Standard CAN/CSA-Z94.4-18, Selection, Use and Care of Respirators (September 2018); (“essai d’ajustement quantitatif”) “self-contained breathing apparatus” means a respirator that has a portable supply of breathing gas that is independent of the ambient atmosphere; (“appareil de protection respiratoire autonome”) “silica” means crystalline silica in a respirable form; (“silice”) “standard method for workplace air sampling and analysis” means a current standard method for measuring a designated substance that is published by, (a) ASTM International, (b) the Health and Safety Executive (UK), (c) the Institut de recherche Robert-Sauvé en santé et en sécurité du travail (Québec), (d) the International Organization for Standardization, (e) NIOSH, (f) the Occupational Safety and Health Administration, United States Department of Labor, or (g) the United States Environmental Protection Agency; (“méthode normalisée d’échantillonnage et d’analyse de l’air d’un lieu de travail”) “STEL” or “short-term exposure limit” means the maximum airborne concentration of a biological or chemical agent to which a worker may be exposed, (a) in any 15-minute period, (b) no more than four times during an eight hour work shift, and (c) with at least one hour between exposures; (“LECT”, “limite d’exposition à court terme”) “SWPF” or “simulated workplace protection factor” means a surrogate measure of the workplace protection provided by a respirator, as determined in a controlled laboratory setting that simulates a workplace setting; (“FPSMT”, “facteur de protection simulé en milieu de travail”) “tight-fitting” means designed to form a complete seal with the user’s face or neck; (“hermétique”) “TWA” or “time-weighted average limit” means the time-weighted average airborne concentration of a biological or chemical agent to which a worker may be exposed in a work day or work week. (“LMPT” ou “limite moyenne pondérée dans le temps”)  O. Reg. 490/09, s. 1; O. Reg. 189/19, s. 1.