Canada–Nova Scotia Offshore Area Occupational Health and Safety Regulations — 172
Dive contractor obligations 172 (1) Every dive contractor must ensure, with respect to all diving operations under its direction and control, that (a) the diving system used conforms to the annex to International Maritime Organization Resolution A.831(19), Code of Safety for Diving Systems, 1995 ; (b) each member of the dive team and the pilot of any remotely operated vehicle being deployed conforms to the applicable competencies set out in CSA Group standard Z275.4, Competency standard for diving, hyperbaric chamber, and remotely operated vehicle operations ; (c) each diver and dive supervisor holds a valid standard first aid certificate or advanced first aid certificate and a valid certificate in first aid oxygen administration; (d) each diver has been certified, within the 12-month period ending on the last day of the diving operation, as being medically fit to dive by one of the following physicians and has confirmed that their medical condition has not changed since their most recent certification: (i) a physician who is licensed to practise medicine in Canada and meets the competencies of a Level 1 Physician set out in CSA Group standard Z275.4, Competency standard for diving, hyperbaric chamber, and remotely operated vehicle operations , or (ii) a specialized dive physician who bases their certification on their review of a medical fitness certification issued in a jurisdiction outside of Canada within the same 12-month period; (e) a specialized dive physician is readily available at all times to provide medical advice from a remote location in Nova Scotia and to be transported to the workplace, if necessary, to provide medical treatment, including to a diver in a compression chamber; (f) any person performing first aid on a diver has unimpeded access to a means of communicating with the specialized dive physician; (g) appropriate equipment is available at the workplace to permit the specialized dive physician, from a remote location, to (i) communicate directly with a diver inside a compression chamber, (ii) observe and examine a diver inside a compression chamber by means of visual and auditory aids, and (iii) use available monitoring or clinical assessment technologies on a diver; (h) the data transfer rate at the workplace is sufficient to permit continuous monitoring of a person inside a compression chamber and to allow the results of ongoing medical testing, such as electrocardiograms, to be transferred to the specialized dive physician, as determined through testing before the start of the diving operations; (i) breathing mixtures that conform to CSA Group standard Z275.2, Operational safety code for diving operations or European Committee for Standardization (CEN) standard EN 12021, Respiratory equipment — Compressed gases for breathing apparatus are available in the quantities calculated in accordance with paragraph 165 (i); (j) each diver has independent primary and secondary breathing mixture supplies, each of which can be isolated from the supplies of other divers; (k) breathing mixtures are available to divers at a rate appropriate to the depth and circumstances of the dive but no less than 62.5 L per minute; (l) breathing mixtures are stored in compressed gas cylinders that have been certified by a competent person who is independent of the operator, dive contractor and manufacturer as being safe for that use; (m) the applicable colour code referred to in paragraph 165 (j) is posted in a conspicuous place in all breathing mixture storage areas; (n) the oxygen content of each breathing mixture is analyzed by a member of the dive team on receipt of the mixture and immediately prior to each dive for which that mixture is to be used and any breathing mixture found to contain more than 25% oxygen by volume is handled as if it were pure oxygen; (o) if a remotely operated vehicle is deployed while divers are in the water, there is a dedicated and continuous means of communication between the dive supervisor and t