Canada Oil and Gas Diving Regulations — 2
 plan referred to in paragraph 4(4)(i); ( plan d’urgence ) craft means any vessel, vehicle, hovercraft, semi-submersible, submarine or diving-submersible and includes a self-propelled, tethered, towed or bottom-contact apparatus, but does not include an installation; ( véhicule ) decompression means the gradual reduction of the pressures of the inert components of a breathing mixture in the body; ( décompression ) decompression sickness means a condition caused by the reduction or other changes of pressure on or in the body; ( maladie de la décompression ) decompression sickness type I means a decompression sickness that is characterized by one or both of the following symptoms, namely, (a) pain that is located at or near the joints of the limbs but is not felt in other parts of the body, and (b) cutaneous manifestations including a rash and cutaneous pruritis (intense itching); ( maladie de la décompression de type I ) decompression sickness type II means a decompression sickness that is characterized by one or more of the following symptoms, namely, (a) neurological manifestations related to the central nervous system, (b) interference with the respiratory or cardiovascular system, (c) otologic disorders, and (d) any symptoms not referred to in the definition “decompression sickness type I”; ( maladie de la décompression de type II ) decompression table means a table or set of tables that (a) shows a schedule of rates for safe descent and ascent and the appropriate breathing mixture to be used by a diver during a dive, and (b) has been approved in accordance with section 5; ( table de décompression ) dive site means the place on a craft or installation from which a diving operation is conducted and from which a diver or pilot involved in the diving operation enters the water; ( lieu de plongée ) dive time means the period commencing when a person begins pressurization or descent for a dive and terminating when the person completes decompression or ascent; ( durée de la plongée ) diver means a person who meets the requirements of section 53, 55 or 57, who is involved in a diving operation that is part of a diving program and who may be subject to pressures greater than atmospheric pressure; ( plongeur ) diving bell means a compression chamber that is intended to be submerged and that is designed to transport a person at atmospheric pressure or divers at pressures greater than atmospheric pressure from the surface to an underwater work site and back and includes the compression chamber of a diving submersible; ( tourelle de plongée ) diving contractor means a person who employs a diver for a diving operation or who holds a contract to supply diving services for a diving operation, but does not include a self-employed diver; ( entrepreneur en plongée ) diving crew means the persons who are designated by a diving contractor to be involved in a diving operation conducted by the diving contractor and who are under the supervision of a supervisor; ( équipe de plongée ) diving doctor means a medical doctor who is licensed and registered to practise in a province, who has completed a diving medical course acceptable to the Minister and who has been accepted in writing by the Minister to certify divers for the purposes of paragraph 53(b), but who has not been accepted by the Minister to provide medical assistance under pressures greater than atmospheric pressure; ( médecin de plongée ) diving operation means any work or activity that is associated with a dive and that takes place during the total dive time and includes (a) any work or activity involving a diver or pilot, (b) the activities of a person assisting a diver or pilot involved in the dive, and (c) any use of an ADS in the dive; ( opérations de plongée ) diving plant and equipment means the plant and equipment that are used in, or in connection with, a diving operation and includes the plant and equipment that are essential to a diver or pilot; ( matériel de plongée ) diving