312.1. Definitions: In this Division,
“area of influence” means a part of a watercourse upstream or downstream from a hydraulic structure or hydroelectric plant that, following a variation in the flow of turbine discharge or discharged water, is subject to current variations that constitute danger for the diver; (zone d’influence)
“bottom time” means the time, rounded to the nearest whole minute, comprised between the time the dive begins and the time the diver begins to ascend; (temps de fond)
“breathing mixture” means compressed breathing air or a gas mixture containing oxygen in a proportion sufficient to enable the diver to breathe freely without any danger of physiological problems; (mélange respirable)
“buddy diving” means any free-swimming scuba diving by a team of 2 divers who ensure each other’s safety; (plongée en compagnonnage)
“contaminated environment” means a liquid environment containing contaminants or dangerous substances within the meaning of the Act respecting occupational health and safety (chapter S-2.1); (milieu contaminé)
“decompression accident” means the formation of gas bubbles in the blood and tissues following bad decompression while diving; (accident de décompression)
“decompression tables” means the tables indicating the duration of the stops to be complied with in the ascent of a diver according to the characteristics of the dive, such as depth, breathing mixture used and bottom time, in order to reduce the risk of decompression accidents; (tables de plongée ou de décompression)
“deep diving” means any diving to depths greater than 40 m; (plongée profonde)
“dive time” means the time period comprising the bottom time and the time required to resurface, including decompression time; (durée de plongée)
“diving bell” means a vessel linked to the surface, with the bottom open and having, at its top, a dry compartment for the diver; (cloche de plongée)
“diving station” means a location on the surface, such as a bank, jetty, floating wharf or boat, large enough to safely hold the dive team and other workers, allow the installation of the required diving equipment and material and ensure the smooth running of the operations; (poste de plongée)
“environment with an obstruction” means a submerged work area from which a diver cannot be returned to the surface because of an obstacle exerting a resistance when the umbilical is pulled from the surface; (milieu à obstacle)
“free-swimming scuba diving” means scuba diving without a lifeline secured to the surface or a buoy; (en nage libre ou plongée en nage libre)
“hyperbaric chamber” means a pressure vessel and associated equipment designed to submit a person to pressures greater than atmospheric pressure; (caisson hyperbare)
“police diving” means any diving by police divers who are members of a diving unit constituted within a police force in Québec, during an intervention regarding public order and security in accordance with the laws in force, in particular, rescue, safety of sites, or search and recovery of persons or clues linked to an investigation; (plongée policière)
“restricted access area” means a submerged work area, such as a tank, from which a diver can only exit or be taken out through a narrow passageway; (milieu à accès restreint)
“saturation diving” means any diving consisting in maintaining the diver pressurized in a submersible compression chamber so that the total pressure of inert gases in the diver’s body remains equal to the ambient pressure at the depth of the dive and thus allowing a longer bottom time without lengthening the duration of the decompression; (plongée à saturation)
“scientific diving” means any diving to gather specimens or data for scientific purposes, in particular, in archaeology, biology, environment sciences, oceanography, halieutics or microbiology; (plongée scientifique)
“scuba diving” means any diving carried out with an open-circuit underwater breathing apparatus attached only to at least one cylinder containing a breathing mixture worn by a diver; (plongée en mode autonome)
“Service d’assistance médicale pour les urgences en plongée” means the medical assistance service in case of diving emergency designated by the Ministère de la Santé et des Services sociaux;
“site likely to show a pressure differential” means an underwater site where a crack, piping erosion or opening can cause a difference in pressure causing a source of suction for the diver; (site susceptible de présenter un différentiel de pression)
“stage” means the equipment used to bring a diver to the point of entry into the water, in particular a cage, submersible compression chamber, platform or diving bell; (nacelle de plongeur)
“submersible compression chamber” means a submersible hyperbaric chamber equipped with a variable pressure lock used to lower divers under pressure or bring them up at the atmospheric pressure; (tourelle)
“surface-supply diving” means any diving carried out with an open-circuit underwater breathing apparatus attached to an umbilical supplied from the surface with a breathing mixture; (plongée en mode non autonome)
“therapeutic recompression” means the treatment received by a diver, usually in a hyperbaric chamber, in accordance with the recognized treatment tables and practices; (recompression thérapeutique)
“treatment tables” means the hyperbaric treatment protocols, including the therapeutic recompression profiles used when treating a diver who was the victim of a decompression accident; (tables de traitement)
“umbilical” means a bundle of cables and flexible hoses linking a diver to the surface to supply breathing mixture, power and communication. (ombilical)
O.C. 425-2010, s. 3; S.Q. 2015, c. 13, s. 20.