5.3 Respiratory Protection Program, Fit Testing & Medical Evaluations (1910.134)

5.3 Respiratory Protection Program, Fit Testing & Medical Evaluations (1910.134)

29 CFR 1910.134 is one of the most frequently cited standards in OSHA general industry inspections. Occupational respiratory hazards include airborne contaminants such as toxic dusts, mists, fumes, gases, vapors, biological aerosols, and oxygen-deficient atmospheres. Under 1910.134(a)(1), the primary objective is to prevent occupational diseases caused by breathing contaminated air.

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Mandatory Written Respiratory Protection Program (1910.134(c))

Whenever respirators are necessary to protect employee health, or whenever respirators are required by the employer, the employer MUST establish and implement a written site-specific respiratory protection program with worksite-specific procedures.

Qualified Program Administrator

Under 1910.134(c)(3), the employer must designate a qualified program administrator who is trained and knowledgeable in respiratory protection to conduct evaluations and administer the program. The administrator must continuously update the program to reflect changes in workplace hazards.

Mandatory Program Elements (1910.134(c)(1))

The written program must outline specific operating procedures covering nine mandatory elements:

1. Procedures for selecting respirators for use in the workplace.
2. Medical evaluations of employees required to use respirators.
3. Fit testing procedures for tight-fitting respirators.
4. Procedures for proper use of respirators in routine and reasonably foreseeable emergency situations.
5. Procedures and schedules for cleaning, disinfecting, storing, inspecting, repairing, discarding, and maintaining respirators.
6. Procedures to ensure adequate air quality, quantity, and flow of breathing air for atmosphere-supplying respirators.
7. Training of employees in the respiratory hazards to which they are exposed during routine and emergency situations.
8. Training of employees in the proper use of respirators, including donning and doffing, limitations on use, and maintenance.
9. Procedures for regularly evaluating the effectiveness of the program.

Voluntary Respirator Use Provisions (1910.134(c)(2))

If an employer permits employees to wear respirators voluntarily (e.g., wearing a filtering facepiece dust mask when airborne concentrations are below OSHA Permissible Exposure Limits), the employer must:

• Determine that voluntary respirator use will not in itself create a hazard.
• Provide the employee with the mandatory information contained in Appendix D of 29 CFR 1910.134 ("Information for Employees Using Respirators When Not Required Under the Standard").
• Exception: Employers are not required to institute a full written program or medical evaluation for voluntary use of filtering facepiece (dust mask) respirators only.

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Medical Evaluations (29 CFR 1910.134(e))

Wearing a respirator imposes substantial physiological stress on the human body, including increased breathing resistance, cardiovascular strain, thermal discomfort, and psychological claustrophobia. Therefore, 1910.134(e)(1) mandates that the employer provide a medical evaluation to determine an employee's ability to use a respirator BEFORE the employee is fit tested or required to use the respirator in the workplace.

RESPIRATOR PROGRAM IMPLEMENTATION FLOW:

[ Hazard Assessment ] 
        │
        ▼
[ Medical Evaluation (PLHCP) ]  ◄── MUST PRECEDE FIT TESTING!
        │
        ▼
[ Fit Testing (QLFT or QNFT) ]
        │
        ▼
[ Employee Donning & User Seal Check ]
        │
        ▼
[ Workplace Entry & Operation ]

PLHCP Qualifications & OSHA Questionnaire

• PLHCP: The evaluation must be conducted by a Physician or Other Licensed Health Care Professional (such as a licensed Nurse Practitioner or Physician Assistant).
• Mandatory Questionnaire: The medical evaluation utilizes the standardized OSHA Respirator Medical Evaluation Questionnaire contained in Appendix C of 29 CFR 1910.134 (Section 1 and Section 2).
• Confidentiality: The questionnaire must be administered confidentially during normal working hours without cost to the employee.

Medical Determination & Written Recommendation

The PLHCP provides a written recommendation to the employer containing only:

• Whether the employee is medically cleared to wear the respirator (or cleared with specific limitations, such as restricted to PAPR use only).
• Any need for follow-up medical evaluations.
• Statement that the PLHCP has provided the employee with a copy of the written recommendation.

ANNUAL MEDICAL EVALUATIONS NOT MANDATORY: Unlike fit testing, OSHA does NOT require annual medical re-evaluations automatically. Retraining/re-evaluation is triggered only if an employee reports medical signs/symptoms related to respirator use, a PLHCP or supervisor recommends re-evaluation, or workplace observations indicate a change in physiological burden.

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Fit Testing Standards (29 CFR 1910.134(f))

Under 29 CFR 1910.134(f), before any employee is required to use any tight-fitting facepiece respirator, the employee must be fit tested with the exact make, model, style, and size of respirator that will be used.

Fit Testing Frequency Mandates

Fit testing must be conducted:

1. Prior to initial use of a tight-fitting respirator.
2. Whenever a different respirator facepiece (size, style, model, or make) is used.
3. At least annually (every 12 months) thereafter.
4. Whenever there are physical changes in the employee that could affect facepiece seal (e.g., significant facial scarring, major dental changes, cosmetic surgery, or an obvious change in body weight).

Qualitative Fit Testing (QLFT) vs. Quantitative Fit Testing (QNFT)

OSHA Appendix A prescribes two acceptable fit testing methodologies:

                 QUANTITATIVE FIT FACTOR FORMULA
                 
                            C_out
             Fit Factor = ─────────
                            C_in
                            
  Where C_out = Concentration of ambient particles outside facepiece
        C_in  = Concentration of ambient particles inside facepiece

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User Seal Checks (29 CFR 1910.134(g)(1)(iii))

A User Seal Check is an operational check conducted by the employee every single time a tight-fitting respirator is put on (donned). It is entirely distinct from a formal Fit Test.

OSHA Appendix B-1 outlines the mandatory procedures for positive and negative pressure user seal checks:

• Positive Pressure Check: The wearer covers the exhalation valve housing with the palm of the hand and exhales gently into the facepiece. The facepiece should puff out slightly with no outward air leakage detected around the sealing surface.
• Negative Pressure Check: The wearer covers the inlet openings of the cartridges/filters with the palms of the hands (or squeezes the breathing tube) and inhales gently. The facepiece should collapse slightly against the face and remain collapsed with no inward air leakage detected.