Commercial Diving Safety

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Language version

English and French (French voice-over only)


Commercial diving is covered by Ontario’s Occupational Health and Safety Act. This video concentrates on diving operations at hydro-electric dams.

One of the main hazards in diving at dams is differential pressures (Delta P forces). This video, hosted by a Ministry of Labour inspector, focuses on the required procedures a diving team must take regarding Delta P forces. The inspector conducts an inspection of diving operation at an Ontario Power Generation dam, showing what is necessary for compliance with the Occupational Health and Safety Act and its regulations.

These "inspector" videos use ministry inspectors, not actors. By showing what diving operations must do to be in compliance with the Occupational Health and Safety Act and its regulations, the ministry expects to achieve increased cooperation and compliance during its inspections, and improved workplace health and safety in that sector.

As well, by using actual ministry inspectors in the video instead of actors, the video helps put a "human face" on our inspection staff, showing that they are experts in their field.

Target group:

Target audiences -- Commercial diving operations

Subject matter:

Key messages: - Commercial diving operations are covered by Ontario's Occupational Health and safety Act and its Regulations. - Special care must be taken during diving operations at a dam to deal with differential pressures (Delta P). Aim: By following the outlined procedures, diving operations will be in compliance with the Occupational Health and Safety Act, improving the health and safety of divers.


Video is a cost-effective vehicle to get a message across to a large audience. Videos are put on the Ministry of Labour website. Various associations and trade media link to them. Employers use the videos during health and safety meetings. As well, copies of the videos are sent to associations for use during conferences, etc.


free of charge


Ontario Ministry of Labour


400 University Ave. 7th floor
M7A 1T7 Toronto, Ontario


+1 416 3267401


+1  416  3267406




Platypus Media Inc.


24 Triller Ave. 
M6K 3B8 Toronto, Ontario


+1 416 3267401