Application
423(1) This Part applies to diving operations performed by workers who are diving at a work site.
423(2) This Part does not apply to sport or recreational diving or to a person instructing others in
sport or recreational diving.
423(3) If the requirements of this Part conflict with a requirement under another Part, the
requirements of this Part prevail.

Employer responsibilities
424 An employer must ensure that diving operations meet the requirements of
(a) CSA Standard CAN/CSA Z275.1-05, Hyperbaric Facilities,
(b) CSA Standard CAN/CSA Z275.2-04, Occupational Safety Code for Diving Operations, and
(c) CSA Standard CAN/CSA Z275.4-02, Competency Standard for Diving Operations.
425 to 436 Repealed.
Intakes, pipes and tunnels
437 Despite Clause 3.5.3.4 of CSA Standard Z275.2-04, Competency Standard for Diving
Operations, an employer must ensure that the flow through the intake of a pipe, tunnel, duct or similar installation in the vicinity of a dive
(a) is stopped and the intake mechanism is locked out before the dive begins, and
(b) is not restarted until after the diver leaves the water.
438 to 440 Repealed.