CAN/CSA-Z275.4-97

1. Scope 1.1 This Standard applies to occupational diving operations conducted in connection with all types of work and employment, and describes the requirements for minimal competency levels for all personnel directly associated with the identified techniques of diving. Canadian safety and health legislation requires that all workers be competent to perform the work assigned to them. They require competency in both the theory and use of the type of diving apparatus employed. This Standard has been established to provide diver training facilities and the diving industry with a uniform minimum level of competency necessary for the various levels of diver techniques. This level of competency will allow the diver to safely and competently complete the specific tasks required of the occupational diver. Note: It is recognized that certain underwater tasks may require specialized codes of practice. Competency levels which differ from the requirements of this Standard may be acceptable to the regulatory authority. 1.2 This Standard addresses competency requirements for the following: (a) occupational (open-circuit) SCUBA diving; (b) surface-supplied diving (i) air (1) restricted surface-supplied; and (2) unrestricted surface supplied; and (ii) mixed gas; (c) deep diving (i) bell techniques (bell); (ii) saturation techniques (SAT); and (iii) atmospheric diving system techniques (ADS); and (d) diving and hyperbaric physicians. 1.3 This Standard addresses the competency requirements for the following types of personnel associated with the above diving techniques: (a) divers/pilots; (b) tenders; (c) diving supervisors; (d) hyperbaric chamber operator; (e) life-support technician (LST or CHT); and (f) medical physicians. 1.4 This Standard does not apply to diving operations performed solely for sport recreation or the training thereof. It also does not include SCUBA techniques using enriched air (NITROX). This Standard does not include work techniques associated with underwater diving operations. Note: This refers to job-specific skills such as welding, setting explosives, etc. 1.5 The values given in SI (metric) units are standard. The values given in parentheses are for information only. 1.6 This Standard does not apply to scientific diving as defined in Clause 2.1