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Maritime Occupational Health and Safety Regulations (SOR/2010-120)

Regulations are current to 2021-09-11 and last amended on 2021-07-01. Previous Versions

PART 16Hot Work Operations (continued)

Ventilation Equipment (continued)

  • SOR/2019-246, s. 303(F)

 The percentage of oxygen in the atmosphere in a working area must not be less than 19.5 per cent or more than 23 per cent by volume at normal atmospheric pressure and in no case is the partial pressure of oxygen to be less than 148 mm Hg.

  •  (1) If ventilation equipment is used to maintain the concentration of an airborne hazardous substance below or at the value or percentage referred to in section 195 or the percentage of oxygen in the air of a confined space within the limits referred to in section 196, the employer is prohibited from granting any person access to the work area, unless

    • (a) the ventilation equipment is

      • (i) equipped with an alarm that will, if the equipment fails, be activated automatically and be audible or visible to any person in the working area, or

      • (ii) monitored by an employee who is in constant attendance at the equipment; and

    • (b) in the event of a failure of the ventilation equipment, sufficient time will be available for a person to escape from the working area before one of the following occurs:

      • (i) that person’s exposure to or the concentration of a hazardous substance in the work area is more than the value or percentage prescribed in section 195, or

      • (ii) the percentage of oxygen in the atmosphere ceases to meet the requirements of section 196.

  • (2) The employee referred to in subparagraph (1)(a)(ii) must activate an alarm in the event of faulty operation of the ventilation equipment.

PART 17Boilers and Pressure Vessels


 This Part does not apply in respect of

  • (a) a heating boiler that has a wetted heating surface of 3 m2 or less;

  • (b) a pressure vessel that has a capacity of 40 l or less;

  • (c) a pressure vessel that is installed for use at a pressure of one atmosphere of pressure or less;

  • (d) a pressure vessel that has an internal diameter of 152 mm or less;

  • (e) a pressure vessel that has an internal diameter of 610 mm or less and that is used to store hot water;

  • (f) a pressure vessel that has an internal diameter of 610 mm or less connected to a water pumping system and that contains compressed air which serves as a cushion;

  • (g) a hydropneumatic tank that has an internal diameter of 610 mm or less; or

  • (h) a refrigeration plant that has a capacity of 18 kW or less.

Construction, Installation and Inspection

 An employer must ensure that every boiler, pressure vessel and pressure piping system used in a work place , if feasible, meets the requirements set out in the Marine Machinery Regulations.

Use, Operation and Maintenance

 An employer must ensure that a qualified person, charged with the operation of a boiler, is in attendance and readily available at all times while the boiler is in operation.

PART 18Tools and Machinery


 The following definitions apply in this Part.

explosive-actuated fastening tool

explosive-actuated fastening tool means a tool that, by means of an explosive force, propels or discharges a fastener for the purpose of impinging it on or causing it to penetrate another object or material. (pistolet de scellement à cartouches explosives)

fire hazard area

fire hazard area means an area that contains or is likely to contain an explosive or flammable concentration of a hazardous substance. (endroit présentant un risque d’incendie)


 This Part applies to machines, tools and guards.

Design, Construction and Operation of Tools

  •  (1) The exterior surface of any tool used by an employee in a fire hazard area must be made of non-sparking material.

  • (2) All portable electric tools used by employees must meet the CSA Standard CAN/CSA-C22.2 NO. 71.1-M89 (R2004), Portable Electric Tools.

  • (3) All portable electric tools used by employees must be grounded except when the tools

    • (a) are powered by a self-contained battery;

    • (b) have a protective system of double insulation; or

    • (c) are used in a location where reliable grounding cannot be obtained if the tools are supplied from a double insulated portable ground fault circuit interrupter of the class A type that meets the standards set out in CSA Standard CAN/CSA-C22.2 NO. 144-M91 (R2006), Ground Fault Circuit Interrupters.

  • (4) All portable electric tools used by employees in a fire hazard area must be marked as appropriate for use or designed for use in a fire hazard area.

  • (5) If an air hose is connected to a portable air-powered tool used by an employee, a restraining device must be attached

    • (a) to all hose connections; and

    • (b) if an employee may be injured by the tool falling, to the tool.

  • (6) All explosive-actuated fastening tools used by employees must meet and be operated in accordance with the standards set out in CSA Standard Z166-1975, Explosive Actuated Fastening Tools.

  • (7) An employee must not operate an explosive-actuated fastening tool unless authorized to do so by their employer.

  • (8) All chain saws used by employees must meet the standards set out in CSA Standard CAN/CSA-Z62.1-03 (R2008), Chain Saws.

Defective Tools and Machinery

  •  (1) If an employee finds any defect in a tool or machine that may render it unsafe for use, they must report the defect to their employer as soon as feasible.

  • (2) An employer must mark or tag as unsafe and remove from service any tool or machine used by employees that has a defect that may render it unsafe for use.

Training and Instruction

  • SOR/2019-246, s. 311(F)
  •  (1) Every employee must be trained and instructed by a qualified person in the safe and proper inspection, maintenance and use of all tools and machines that they are required to use.

  • (2) An employer must keep a manual of operating instructions for each type of portable electric tool, portable air-powered tool, explosive-actuated fastening tool and machine used by employees and that manual must be made readily available for examination by employees who are required to use the tool or machine to which the manual applies.

General Requirements for Protective Guards

  •  (1) Every machine that has exposed moving, rotating, electrically charged or hot parts or that processes, transports or handles material that constitutes a hazard to an employee must be equipped with a machine guard that

    • (a) prevents the employee or any part of their body from coming into contact with the parts or material;

    • (b) prevents access by the employee to the area of exposure or to the material or parts that constitute a hazard during the operation of the machine; or

    • (c) makes the machine inoperative if the employee or any part of their clothing is in or near a part of the machine that is likely to cause injury.

  • (2) If feasible, the machine guard referred to in subsection (1) must not be removable.

  • (3) A machine guard must be constructed, installed and maintained so that it meets the requirements of subsection (1).

  • (4) Equipment used in the mechanical transmission of power must meet the requirements set out in ANSI Standard ANSI/AMT B15.1-2000 (R2008), Safety Standard for Mechanical Power Transmission Apparatus.

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