Respiratory Protection

Many workplaces have operations and processes that generate airborne concentrations of dusts, mists, fumes, aerosols, gases or vapours that necessitate the use of control measures such as engineering and/or administrative controls. When these measures fail or are impractical, the use of respiratory protective equipment may be necessary to protect employees from the effects of harmful substances. Different sections of the General Regulation identify what must be done when respiratory protective equipment is required.

There are different types of respirators, ranging from disposable paper masks to self-contained breathing apparatus with full face masks and air cylinders. When respiratory protection is required, it is important to ensure that the right type of respirator is used. The two basic types of respirators are: air-purifying and supplied-air.

As an employer, you must ensure that:

  • Adequate respiratory protective equipment is provided to each employee who may be exposed to the following conditions:
    • The level of concentration of an air contaminant may exceed 50% of the occupational exposure limit (OEL)
    • There is the possibility of accidental exposure to a level of concentration of an air contaminant in excess of the OEL , or
    • The oxygen content of the atmosphere is less than (or may be less than) 19.5% by volume. Normal oxygen concentration is approximately 21%.
  • When respiratory protective equipment is required, a written code of practice is developed. The code must address the proper selection, care, use, maintenance, and fitting of the equipment to be used.
  • The code of practice:
    • Must include the following information:
      • The name of the employee responsible for the code
      • The requirements for the health assessments and health supervision for each employee who uses respiratory protection
      • A description of the respiratory protective equipment to be used
      • A description of the hazards that may affect the health or safety of employees
      • The requirements for the proper selection, care, use, maintenance and fitting of the respiratory protective equipment
      • The training requirements for employees who use the equipment
      • The record keeping requirements
      • How often the code of practice must be reviewed
    • Comply with the CSA standard Z94.4-11 (R2016), “Selection, Use and Care of Respirators” or a standard offering equivalent or better protection.
    • Is developed in consultation with the committee or health and safety representative, if any, or with employees if there is no committee or representative.
    • Is readily available to an officer or affected employees upon request.
    • Is implemented and adhered to in the workplace.
    • Is followed by employees.

While the employer is ultimately responsible for all the provisions mentioned above, the supervisor has a vital role to play in the safety of their teams. As a supervisor, you must:

  • Acquaint your employees with the hazards and control measures associated with their work
  • Provide the information and instruction necessary to ensure their health and safety
  • Enforce company safety rules, programs, codes of practice and procedures, including ensuring employees comply with the requirements below.

As an employee, you must:

  • Be trained and authorized by your employer to use respiratory protective equipment.
  • Wear required respiratory protective equipment and make sure that all the parts are present and working correctly (filters, valves, face piece, straps, and buckles).
  • Notify your employer of any damaged respiratory protective equipment.
  • Follow the code of practice developed by your employer.
  • Co-operate in attaining an effective fit of the equipment and, in particular, be as clean shaven as is necessary to ensure an effective facial seal.
“occupational exposure limit” means
(a) except with respect to lead sulfide, formaldehyde, sulphur dioxide, hydrogen sulphide and nitrogen dioxide and any other air contaminant for which the Commission sets an exposure limit, a threshold limit value adopted by the ACGIH and set out in the ACGIH publication entitled “2016 Threshold Limit Values for Chemical Substances and Physical Agents and Biological Exposure Indices”,
(b) with respect to lead sulfide, an exposure limit set at 0.15 mg/m3 - TWA,
(c) with respect to formaldehyde, an exposure limit set at 0.5 ppm - TWA and 1.5 ppm - STEL,
(d) with respect to sulphur dioxide, an exposure limit set at 2 ppm (5.2 mg/m3) – TWA and 5 ppm 00(13 mg/m3) - STEL,
(e) with respect to hydrogen sulphide, a ceiling of 10 ppm (13.9 mg/m3),
(f) with respect to nitrogen dioxide, an exposure limit set at 3 ppm (5.6 mg/m3) – TWA and 5 ppm 9.4 mg/m3) – STEL, and
with respect to any other air contaminant for which the Commission sets an exposure limit, the exposure limit set by the Commission;

Viewing CSA Standards as Referenced in NB Legislation

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General Regulation - Occupational Health and Safety Act
N.B. Reg. 91-191

Part III INDOOR AIR QUALITY

Section 25 Respiratory protective equipment - when required

25. Where

(a) the level of concentration of an air contaminant may exceed 50% of the occupational exposure limit in conditions that are part of the normal work procedure,

(b) there is the possibility of accidental exposure to a level of concentration of an air contaminant in excess of the occupational exposure limit, or

(c) the oxygen content of the atmosphere is less than or may be less than 19.5% by volume,

an employer shall provide adequate respiratory protective equipment to each employee who may be exposed to the conditions described in paragraphs (a) to (c).

[N.B. Reg. 2022-27, s. 15]

Part VII PROTECTIVE EQUIPMENT

Section 45 Respiratory Protective Equipment

45. (1) An employer shall ensure that a code of practice concerning respiratory protective equipment is established for a place of employment at which the use of respiratory protective equipment is required.

(1.1) The code of practice referred to in subsection (1) shall contain the following information:

(a) the name of the employee responsible for implementing the code of practice;

(b) a description of the respiratory protective equipment to be used to protect the health and safety of employees;

(c) a description of any possible hazards that may affect the health or safety of employees;

(d) the requirements for the proper selection, care, use, maintenance and fitting of the respiratory protective equipment;

(e) the training requirements for employees who use respiratory protective equipment;

(f) the record-keeping requirements; and

(g) the frequency by which the code of practice is to be reviewed.

(2) An employer shall comply with CSA standard Z94.4-11 (R2016), Selection, use, and care of respirators or a standard offering equivalent or better protection in developing the code of practice.

(2) An employer shall comply with CSA standard Z94.4-93 , "Selection, Use, and Care of Respirators" in developing a code of practice.

(3) Repealed. [N.B. Reg. 2024-38, s. 26]

(4) An employer shall consult with the committee or health and safety representative, if any, or with employees if there is no committee or representative, in developing the code of practice.

(5) An employer shall ensure that a copy of the code of practice is readily available to an officer upon request and to employees in the areas where the respiratory protective equipment may be required to be used.

(6) An employer shall ensure that the code of practice referred to in subsection (1) is implemented and adhered to at the place of employment.

(7) An employee shall adhere to a code of practice referred to in subsection (1).

[N.B. Reg. 2001-33, s. 19; 2022-79, s. 11; 2024-38, s. 26]

46. Repealed. [N.B. Reg. 2024-38, ss. 27 - 28]

[N.B. Reg. 2001-33, s. 20; 2024-38, ss. 27 - 28]

Section 47

47. An employee who may be required to use respiratory protective equipment shall, for the purpose of ensuring that the equipment fits effectively, cooperate with any person identified in the code of practice referred to in section 45 and, if a tight fit is essential to the proper functioning of the equipment, be as clean shaven as is necessary to ensure an effective seal to the facial skin of the employee.

[N.B. Reg. 2024-38, s. 29]
Interpretations
Respiratory protective equipment – Clean shaven Respiratory protective equipment – Compressed breathing air
CCOHS Resources
How Do Particulates Enter the Respiratory System? Respirator Care Respirator Selection Respiratory Protection Against Airborne Infectious Agents for Health Care Workers Welding – Personal Protective Equipment and Clothing What are the Effects of Dust on the Lungs?
Safety Talk
Respirators – Maintenance Respirators – Types
Other Resources
A Code of Practice for Working with Materials Containing Asbestos in New Brunswick Developing a Code of Practice for Respiratory Protective Equipment Respirator Selection Guide Sample Respiratory Protective Equipment Code of Practice