Occupational Health and Safety Code

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.

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.

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.