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Respiratory Protection




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                            Brigham Young University 
                            Department Title: Risk Management & Safety                                                                                                                            Page: 1
                            Title: Respiratory Protection Program                                                                                                                                    Revision: 3
                            Program: 004                                                                                                                                      Date Issued:  September 4, 2007



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Provo, Utah













Program Table of Contents


As obvious as the importance of breathing may be, the importance of protecting oneself from airborne contaminants and the awareness of such hazards does not generally receive equal attention.  Airborne contaminants can negatively affect the respiratory system and other organs via the respiratory system.

Respiratory protection equipment is one form of personal protective equipment (PPE).  Whenever feasible, exposures should be reduced or eliminated through engineering controls, substitution or administrative controls before using PPE. Utilizing respirators should be considered the last resort for protecting against inhalation hazards.  . To ensure that employers provide adequate respiratory protection to their employees, the Occupational Safety and Health Administration (OSHA) has established the Respiratory Protection Rule (29 CFR 1910.134).  BYU has established a Respiratory Protection Program in compliance with 1910.134.  BYU employees and students who use respirators must be included in BYU's Respiratory Protection Program as a Required Respirator User or a Voluntary Respirator User. The program includes airborne hazard assessments, medical evaluations, respirator selection, training in the proper use, care and cleaning of supplied-air and air purifying respirators, fit-testing, and program evaluation. 

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It is the policy of BYU to provide all employees and students a safe and healthy work environment reasonably free of recognized airborne hazards.  The OSHA respiratory protection standard, (29 CFR Part 1910.134) serves as the main reference for BYU's Respiratory Protection Program to prevent and/or minimize occupational diseases caused by air contaminated with harmful biological, radiological agents or dusts, fogs, fumes, mists, gases, smokes, sprays, or vapors.  BYU will make necessary efforts to control airborne contaminants through accepted engineering control measures (i.e., enclosure or confinement of the operation, general and local ventilation, and substitution of less toxic materials) and administrative controls, when feasible.  In situations in which such controls are not feasible, or in emergency situations, appropriate respiratory protection is imperative. 

Respirators must only be used in a manner consistent with the requirements of this program and manufacturer's recommendations.  All respirators used at BYU must be certified by the National Institute for Occupational Safety and Health (NIOSH) and approved by the program administrator. 

2.1 Required Respirator Use

All BYU employees and students who are required to use respirators must participate in this program.   Respirators are required to be used when potential or known inhalation hazards exist at BYU that will equal or exceed fifty-percent of the current and appropriate exposure limit (i.e. OSHA PEL), recognized guideline (i.e. ACGIH TLV) or defined Action Level. 

2.2 Voluntary Respirator Use

BYU employees and students who are authorized to use filtering face piece respirators voluntarily, must comply with those portions of this program that apply to voluntary respirator use.  Voluntary respirator use is only permissible when the program administrator has determined that the exposure is below BYU's Required Respirator Use criteria (section 2.1).  Also it must be determined that the use of such a respirator will not in itself create a hazard, i.e. obscure vision, etc.  Tight fitting respirators may only be used voluntarily if the criteria of this section is met and the user participates in all aspects of this program except fit testing.  

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OSHA Respiratory Protection Rule 29 CFR 1910.134

OSHA Access to Employee Exposure and Medical Records Rule 29 CFR 1910.1020

BYU's Hazard Communication Program

BYU's Chemical Hygiene Program (Lab Standard)

BYU's Confined Space Entry Program

BYU's Asbestos Management Program

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The purpose of the Respiratory Protection Program is to protect BYU employees and students from inhalation health hazards.  Respiratory protection is to be used only if engineering controls, substitution, administrative controls or a combination of such controls are not feasible or adequate to control a potential or identified inhalation hazard.  This program fulfills the requirements of the OSHA Respiratory Protection Rule, 29 CFR 1910.134. 

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This Program applies to all BYU employees and students who are required to wear respiratory protection during work related activities and during emergency incidents. 

Employees and students who are approved to wear respirators under voluntary status are covered by applicable portions of this program. 

Contractors are not covered by this program, but must have an adequate program per 29 CFR 1910.134 if their employees may be exposed to airborne hazards. 

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6.1 Respirator Selection

Respirator selection requires correctly matching the respirator with the user, the hazard and concentration of the hazard.  In order to select the proper respirator, the program administrator will utilize the following information:

  • Hazard Assessment of the job or task
  • Nature of the hazard, and the physical and chemical properties of air contaminant(s)
  • Oxygen concentration
  • Concentrations of the contaminant(s)
  • Exposure limits, action levels and other established limits for air contaminant(s)
  • Shift and task parameters
  • Respirator user limitations
  • Respirator fit, function and limitations

Additional references:  29 CFR 1910.134, American Conference of Governmental Industrial Hygienist's current Threshold Limit Values publication, American Industrial Hygiene Association's current Emergency Response Planning Guidelines and Workplace Environmental Exposure Levels, chemical manufacturers information, the NIOSH Respirator Selection Logic Guide to Industrial Respiratory Protection, and the latest version of NIOSH's Pocket Guide to Chemical Hazards.

Step 1 

Supervisors must evaluate their workplace(s) and areas where their employees work  for existing or potential inhalation hazards.  Refer to Material Safety Data Sheets for contaminant information.  For assistance with conducting a hazard assessment, contact the program administrator at 422-4468.

Step 2 

Identify employees and students who are or may be exposed to inhalation hazards.  With hazard assessment information, complete a Respirator Request/Hazard Assessment form.   This form may be accessed via the link in this section or on the Risk Management & Safety Department website.  Once the form is completed, click on the submit button at the end of the form to send it to the respirator program administrator. 

Note:  The Respirator Request/Hazard Assessment form needs to be completed only once per job or task unless the job changes in a way to increase airborne hazards or a new chemical inhalation hazard is introduced.  The program administrator may request a re-assessment if necessary. 

Step 3

An industrial hygienist (IH) from the Risk Management & Safety Department will evaluate the request and contact the supervisor to discuss the assessment.  If needed, the IH will arrange a worksite visit and exposure monitoring. 

Step 4

With the information provided and obtained, the assigned IH will determine if the employees and/or students are classified as required respirator users or voluntary respirator users and determine the appropriate type of respiratory protection needed to adequately protect them.

Step 5

The IH will contact the supervisor to initiate the medical evaluation process and set-up training as dictated by the selection process. 

Approved Respirator Types

Select the following link to see descriptions and images of different types of NIOSH approved respirators used at BYU, Appendix E Respirator Types

Non-Approved Respirator Types

For examples of respirator like products that are not NIOSH approved and not approved for use to protect BYU employees and students, see Appendix G Non-approved respirators


6.2 Voluntary Use of Respirators

  • Filtering Face piece Respirators (Dust Masks)
    If the program administrator has determined that no respiratory hazard exists but the employee wants to use filtering face piece respirators, the employee must complete and sign a Voluntary Respirator Request Use Form and read OSHA 1910.134 Appendix D contained on page 2 of the form.   This form should then be sent to the program administrator who will provide the correct respirators.


  • Tight Fitting Respirators
    If the program administrator has determined that no respiratory hazard exists and the employee wants to voluntarily use a tight fitting-filter-cartridge respirator, the employee must pass an initial medical evaluation (see next section 6.3) complete the Voluntary Respirator Request Use Form and read Appendix D of 29 CFR 1910.134 (located on page two of the form).  This form should be sent to the employee's supervisor for signing and then to the program administrator who will add the user to the program and provide respirators.  The supervisor will insure the respirator is cleaned, stored and maintained so that its use does not present a health hazard to the wearer.


6.3 Medical Evaluation

Required respirator users must be medically evaluated annually and found physically able to wear the respirator selected for their use prior to fit-testing and first-time use of the respirator in the workplace.  Those designated as voluntary respirator users and who use tight-fitting (elastomeric) must also be medical evaluated prior to using their respirator.  The initial step is to complete a mandatory medical questionnaire from OSHA's Respiratory Protection Rule 1910.134.  Click on the following link to access the BYU's Medical Questionnaire.  The form can be completed on a computer.  Once completed, print and submit it to the designated qualified Occupational Physician as the Practicing Licensed Health Care Provider (PLHCP).  Instructions for submission are located on page one of the questionnaire.  Due to confidentiality requirements, only the employee and PLHCP shall access the questionnaire.  The program administrator will provide any needed exposure assessment data and respirator type and weight to the PLHCP. 

Based on information in the questionnaire, the PLHCP will determine if additional evaluation is needed (physical visit with PLHCP, pulmonary function tests, etc.). 

6.3.1 Reporting Results of Examinations

The PLHCP examining respirator users will forward a written opinion indicating respirator use recommendations to the program administrator.  The program administrator will contact the supervisor of the respirator users and initiate training and fit-testing based on the recommendations of the PLHCP.  In addition, the examining PLHCP will generate a personal medical report for each person examined and mail a copy to their private residence. 

6.3.2 Reevaluation

A reevaluation will be necessary if the respirator user should experience any medical signs or symptoms that are relevant to the user's ability to wear a respirator.  In such cases, the user should contact their supervisor or program administrator immediately to mitigate the problem.  A change in workplace conditions might also require a reevaluation (e.g., physical work effort, protective clothing, temperature, etc.). 

6.4 Fit Testing

The primary purpose of fit testing is to identify the specific make, model, style and size of respirator best suited for each required respirator user.  Fit testing reinforces respirator training by having wearers review the proper methods of donning and wearing the respirator.  Required respirator users must be medically evaluated and approved to wear the type of respirator selected prior to fit testing.  The fit test will not be conducted if there is any hair growth (stubble, beard, mustache, etc.) between the skin and the respirator sealing surface.

Qualitative Fit Test
A qualitative fit-test is a pass/fail means of testing that relies on the subject’s sensory response to detect a challenge agent.  This means of fit-testing respirator to face seal has been discontinued at BYU, and has been replaced with a quantitative fit-test method.

Quantitative Fit Test
The quantitative fit test measures the challenge agent leakage into the respirator without dependence on a test subject’s voluntary or involuntary response to the challenge agent.  This system measures the particle concentration outside the respirator and inside the respirator. A ratio of these two measurements produces a fit factor (ff=outside concentration/inside concentration). 

A Portacount™ system will be used as the primary fit test for all respirator users.  Achievement of an average fit factor of 100 or greater for tight-fitting half face piece respirators and an average of 500 or greater for tight-fitting full face piece respirators indicates a successful quantitative fit test.  Acceptable methods of qualitative fit testing may be used as a back-up to the primary method only for negative-pressure air-purifying respirators that must achieve a fit factor of 100 or less. 

Fit Testing Procedure

Once initial or refresher training, and medical approval have been completed, the respirator user is eligible to be fit-tested.

If the employee/student has previously been issued an approved respirator, it is preferable to use it for fit-testing.  The respirator to be tested must be worn for at least five minutes before the start of the fit test.

The employee/student will don the respirator and perform positive and negative user seal checks without assistance.  If they cannot successfully perform the seal checks, the trainer will give assistance to refit the respirator.  The user will then retry donning the respirator and performing seal checks.  If this step cannot be completed, the trainer will contact the program administrator. 


While wearing the respirator connected to the Portacount™ quantitative fit test equipment, the employee/student will be asked to perform the following exercises that attempt to dislodge or create a leak in the seal between the face and the face piece.  All exercises are for one minute duration except Grimace which shall be for 15 seconds.

  • Normal Breathing - In a normal standing position, without talking, the test subject shall breathe normally for at least one minute.
  • Deep Breathing - In a normal standing position, without talking, the test subject shall breathe slowly and deeply, taking care so as not to hyperventilate.
  • Turning Head Side to Side - Standing in place, the subject shall slowly turn his/her head from side to side between the extreme positions on each side. The head shall be held at each extreme momentarily so the subject can inhale at each side.
  • Moving Head Up and Down - Standing in place, the subject shall slowly move his/her head up and down. The subject shall be instructed to inhale in the up position (i.e., when looking toward the ceiling).
  • Talking - The subject shall talk out loud slowly and loud enough so as to be heard clearly by the test conductor. The subject can read from a prepared text such as the Rainbow Passage, count backward from 100, or recite a memorized poem or song.
  • Grimace - The test subject shall grimace by smiling or frowning.
  • Bending Over - The test subject shall bend at the waist as if he/she were to touch his/her toes.
  • Normal Breathing - Same as the first exercise.


The test subject shall be questioned by the test conductor regarding the comfort of the respirator upon completion of the protocol. If it has become uncomfortable, another model of respirator shall be tried.   Employee/student who wear eyeglasses will be tested while wearing them.  

If the respirator user does not pass the fit test, a reasonable opportunity to select a different respirator and to be retested will be provided.  Retesting is also necessary if there are changes in the user's physical condition that could affect respirator fit.  Such conditions include, but are not limited to: facial scarring, dental changes, cosmetic surgery, or an obvious change in body weight. 


6.5 Respirator Use

Respirators must only be used in a manner consistent with the requirements of this program, employee/student's level training, manufacturer's recommendations and the respirator's NIOSH certification

  • Use only the brand, model, and size respirator for which you were fitted. Inspect the respirator and parts prior to donning.
  • For tight-fit respirators, perform negative and positive-pressure user seal checks each time the respirator is worn.  For a detailed description select the following link to Appendix G:  User Seal Checks.
  • Use the cartridges recommended for the contaminant involved. Contact the program administrator if you are uncertain about which respirator or cartridges are appropriate for a specific contaminant.
  • Be aware that a respirator has limitations that govern its ability to protect you.
  • Maintain the respirator in a sanitary condition.
  • Follow manufacturer's instructions.
  • Notify your supervisor if you detect increased breathing resistance, an odor or taste, or experience throat irritation.
  • Cartridges must be replaced according to established change schedules and end-of-service-life indicators
  • Cartridges must be changed in areas free from airborne contaminants.
  • Respirators should not be used if they are impaired in any way, i.e. a broken strap, loss of face piece shape, missing parts, etc.

The employee/student must leave a respirator use area and contact their supervisor, and if needed the program administrator, whenever the following occur:


  • The user detects contaminant breakthrough (odor, taste and/or irritation effects)
  • Dizziness or other distress
  • A change in breathing resistance
  • Leakage of the face piece
  • The respirator becomes damaged
  • Cartridges need to be replaced

6.6 Maintenance and Care of Respirators

To ensure that respirators remain serviceable and delivers effective protection, users must inspect, clean and maintain their respirators.  If respirators are not serviceable, contact the program administrator. 

Cleaning and Disinfecting

  • BYU Risk Management and Safety Department or the employees department shall provide each respirator user with a respirator that is clean, sanitary, and in good working order.
  • Periodic disinfecting should be performed as needed. An appropriate quanternary disinfecting agent is available for purchase at Chemistry Stores located in the NICB. 
  • Each respirator user shall clean and disinfect his/her respirator according to manufacturer's recommendations.  This includes:

    1. Disassembly, cleaning and disinfecting, rinsing, drying and reassembly.

    2. Frequency of cleaning is recommended after each use or according to conditions listed below:

      1. If the respiratory equipment is used exclusively by an individual employee, then it shall be cleaned and disinfected as often as necessary to maintain cleanliness.  If the respiratory equipment is used by more than one employee, then it shall be cleaned and disinfected before each use.

      If the respiratory equipment is used for emergencies, training or testing, then the equipment shall be cleaned and disinfected after each use.


  • The respiratory equipment shall be stored in a manner that protects the equipment from damage, contamination, dust, sunlight, extreme temperatures, excessive moisture, and damaging chemicals.  The respiratory equipment shall be stored in a manner that prevents the deformation of the face piece and the exhalation valve.
  • Emergency-use respiratory equipment shall be stored in the following manner:
    1. The respiratory equipment shall be stored in the work area where the equipment is readily accessible.  The respiratory equipment shall be stored in compartments or covers that are clearly labeled or marked as containing respiratory equipment.
    2. The respiratory equipment is stored according to any applicable manufacturer's instructions.

Inspection of Respiratory Equipment

  • All inspections shall be based on the manufacturer's recommendations.
  • Inspections must include a check of respirator function, tightness of connections, and the various parts.  These include, but not limited to, the face piece, head straps, valves, connecting tube, and cartridges.  Replacement valves and other parts can be obtained from the program administrator.
  • Emergency-use respiratory equipment shall be inspected on a monthly basis. It shall be completed in accordance with the manufacturer's recommendations by the program administrator's Industrial Hygiene Assistant. 
  • Emergency escape-only respiratory equipment shall be inspected before being carried into the workplace for use. 
  • Self-Contained Breathing Apparatus (SCBA) shall be inspected monthly by the program administrator's assistant. .
  • The respiratory equipment inspections shall consist of the following:
    1. A check of the condition of the parts (valves, cartridges, canisters or filters, head straps, face piece, connecting tube, and gaskets), respirator function and signs of deterioration or lack of pliability.
    2. For SCBAs, the air or oxygen cylinders shall have and maintain a minimum of 90% of the recommended pressure level.  A check to determine if the regulator and warning devices are also functioning properly shall also be performed on a regular schedule.

Replacement and Repair

  • The employee or his/her supervisor shall contact the program administrator to replace defective or missing valve flaps, gaskets and head straps on air-purifying respirators.  The employee shall immediately inform his/her supervisor of any repairs to be made to the defective respirator equipment and take the equipment out of service.
  • The supervisor shall ensure that the defective respiratory equipment is either repaired or replaced.  He/she shall also ensure that the defective equipment is not used in the interim.

Cartridge Life (End-of-Service Life) and Change-Out Schedule

  • If available, the respirator wearer shall use the End-of-Service-Life Indicator (ESLI) to determine when to replace air-purifying elements.  If no ESLI is available for the selected air-purifying elements, the program administrator shall be consulted to determine a change-out schedule to ensure that the air-purifying elements are replaced before the end of their useful service life.  The following factors may be utilized to estimate service life:

    1. The relative humidity of the work area.  Humidity above 85% can reduce an air-purifying element's estimated service life by approximately 50%.The type of air contaminant.  The concentration of the air contaminant.  By reducing the amount of contaminant by a factor of ten (10), the service life of an air-purifying element can be increased by a factor of five (5).  The breathing demand of the respirator wearer.  The harder and faster one breathes due to work stresses, the shorter the air-purifying element's service life.  The presence of multiple contaminants.  How variable the contaminant's concentration(s) will be.
    2. The breakthrough time(s) of the contaminant(s).

    3. OSHA's Advisor Genius software. 
  • If the respirator wearer experiences any odor, taste, or irritation, or experiences excessive breathing resistance, the wearer shall:
    1. Immediately leave the contaminated area.
    2. Change-out the air-purifying element(s) regardless of the ESLI change-out schedule.
    3. Adjust the change-out schedule to shorter times.
    4. Contact the program administrator to update the existing change-out schedule.
  • The respirator wearer shall change-out and discard any air-purifying elements that have reached their ESLI, failed during use, become damaged or wet, or become difficult to breathe through.  If conditions are causing the air-purifying elements to fail before their ESLI, then the program administrator shall be contacted to determine if the job function requires the use of different type of respirator, i.e. supplied-air respirator, etc.

Breathing Air Quality and Use

  • Only compressed breathing air that meets the specifications below shall be used for air-supplying respirators.

    1. Oxygen in concentrations greater than 23.5% by volume shall not be used in compressed air equipment. 
    2. Oxygen content in compressed breathing air shall be between 19.5% and 23.5% by volume.
    3. Condensed hydrocarbon content shall be 5 mg/m³ or less.
    4. Carbon monoxide content shall be 10 ppm or less.  Carbon dioxide content shall be 1000 ppm or less.
    5. There shall be a lack of noticeable odor in the compressed air.

  • Cylinders of purchased compressed breathing air:
    1. Cylinders shall be tested and maintained according to 49 CFR 173-178, "Shipping Container Specification Regulations." 
    2. The supplier of the cylinder shall provide a certificate indicating that the breathing air has been tested and meets the criteria for Class D breathing air.
    3. Compressed breathing air shall have a moisture level that does not exceed the dew point of -50°F (-45.6°C).


  • SCBA cylinders
    1. SCBA cylinders shall be filled by Provo City Fire Department
    2. The supplier shall provide certification that the breathing air meets Class D breathing air requirements.
  • Oil-less Air Compressors used for breathing air
    1. For compressors that are not oil-lubed, the carbon monoxide level shall be 10 ppm or lower. 
    2. All filters shall be labeled stating the last change-out date and the next due date.
    3. Air compressors shall be located away from any source of air contamination.
  • Oil-lubed compressors
    1. Shall have carbon monoxide alarms.
    2. Carbon monoxide alarms shall be calibrated per manufacturer's recommendations. 
    3. The moisture content shall have a dew point of 10°F (-5.56°C) or below.
    4. Air compressors shall be located away from any source of air contamination.
    5. Breathing air couplings shall be different from non-breathing air couplings.

    6. All sorbents and filters shall be labeled with a tag stating the last change-out date.


Identification of Filters, Cartridges and Canisters

  • All filters, cartridges and canisters used shall be NIOSH-approved.
  • All labels on the filters, cartridges and canisters shall be labeled and color-coded with the NIOSH approval label.
  • During respirator use, labels shall not be defaced, obscured or removed.  Information on them shall remain legible.  Any marking on the filters, cartridges or canisters by the user is acceptable if the marking does not compromise the integrity of the filter, cartridge or canister.  Markings must not obscure information on the label.


6.7 Record Keeping

  • The program administrator shall maintain training records, written medical opinions for required respirator users, fit test records, voluntary use records, SCBA, supplied airline and escape respirator inspection records and grade D breathing air certificates.
  • Medical questionnaires completed by required respirator users and follow-up examination records will be maintained by the reviewing PLHCP and not by that person's department or supervisor.   These records will be accessible, preserved and maintained for the duration of employment of the employee plus 30 years. 
  • Written medical opinions provided by the PLHCP to BYU shall be kept by the program administrator for the duration of employment of the employee plus thirty years. 
  • Fit-test records shall be maintained at least until the next fit-test is performed. 

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  • Risk Management and Safety Department:
    1. Provide assistance and support with program compliance
    2. Provide medical surveillance
    3. Provide respirators to departments
    4. Review program evaluation reports and provide feedback to departments (See Section 9.0 Monitoring)
  • Program Administrator:
    1. Manage and conduct exposure assessments
    2. Coordinate scheduling of medical evaluations with selected PLHCP
    3. Manage and conduct training and fit testing
    4. Select respirators
    5. Conduct regular program evaluation
    6. Maintain required records including records of training, medical evaluations and fit testing
  • Departments:
    1.  Support supervisors, employees, students and the program administrator with implementation and program compliance
    2. Partner with the program administrator with evaluation of engineering control feasibility and implementation for existing and new operations affected by this program.
  • Supervisors:
    1. Complete respirator request forms
    2. Ensure that all employees wearing respirators in the workplace (with the exception of employees voluntarily using filtering face pieces) are identified and covered by this program
    3. Ensure covered employees receive required medical evaluations.
    4. Ensure covered employees attend mandatory training
    5. Provide sufficient surveillance of the work area to ensure employee compliance with all program elements
    6. Assist program administrator with regular program evaluations.
  • Employees and students:
    1. Use only approved respirators in the workplace.
    2. Undergo medical evaluations as required.
    3. Attend training as required.
    4. Complete fit-testing process before initial respirator use and as required thereafter.
    5. Perform a user seal check each time a tight-fitting respirator is used.
    6. Do not wear a tight-fitting respirator if facial hair (or other conditions) interferes with the sealing surface of the face piece and face.
    7. Clean and disinfect respirators as outlined in this program.
    8. Store respirator in accordance with established procedures.
    9. Inspect respirator before each use and during cleaning. Report any conditions that would require respirator replacement before next use.
    10. Ensure compliance with other applicable parts of this program
    11. Report any work conditions that may require change in respirator selection and use.

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All employees & students involved in the program must be properly trained. This includes respirator user's supervisors.  They must have adequate training and knowledge to fulfill their responsibilities as outlined in section 7.0

Training is required initially and annually thereafter for required respirator users.  If a new hazard is introduced, additional evaluation and training may be necessary.  Voluntary users of elastomeric respirators must take part in the full program.  Voluntary users wearing filtering-face piece, NIOSH approved respirators must read and understand Appendix D of OSHA 1910.134 initially.

Refresher training is available for respirator users who have completed the initial training and who frequently wear their respirators. 

Initial Training

Initial training is required:

  • Before work requiring a respirator is performed and annually thereafter
  • When hazards or conditions change,
  • If the user has not retained the necessary skills for safe respirator use. 

Supervisors can sign employees up for training or employees can sign-up with supervisor's approval.  Training classes are limited to 10 participants with one type of respirator per person or 6 participants with 2 or more types of respirators per person.  These classes consist of 1.5-3 hours of instruction, dependent upon number of fit-tests performed.  Visits the Safety Training Calendar to sign up for and check availability of classes.  If the scheduled classes do not fit your schedule, supervisors can request a training class at a more convenient time.  Contact the respiratory program administrator to schedule training. 

Training will cover, at the minimum, the following topics:

  • General requirements of the OSHA respiratory protection standard
  • Why respirators must be used
  • Respiratory Specific Information
  • Respiratory Hazards
  • Employee exposure
  • Health effects
  • Proper Selection
  • Procedures for inspecting the respirator, donning and removing it, checking the fit and seal, and actually wearing it 
  • Information regarding the consequences of improper fit, usage, or maintenance
  • Limitations and capabilities of the respirator selected, including ESLI and change schedules
  • How to use the respirator effectively in emergency situations, including situations when malfunctions occur
  • Proper procedures for maintenance and storage
  • How to recognize medical signs and symptoms that may limit or prevent the effective use of respirators
  • Depending on the type, respirators may burden users in several ways.  These stressors may include:  physiological burden from its weight and breathing resistance, musculoskeletal and cardiopulmonary stress, limitations on hearing, sight, smell and communication. 

Refresher Training

Refresher training is also available for employees and students required to use respirators and that have had no changes in their initial hazard assessment and respirator selection.  Note:  medical evaluation and fit-testing is still required for the refresher training.  Contact the Program Administrator to schedule training.

Training content will include information about: 

  • Why the respirator is necessary
  • Proper fit, usage and maintenance, limitations and capabilities
  • Use in emergency situations or respirator malfunctions
  • How to put on, remove, use and check seals of respirator
  • Procedures for maintenance and storage
  • Medical signs and symptoms that may limit or prevent use, and general requirements of 29 CFR 1910.134

Supplemental Training

Additional training per manufacturers specifications, equipment information, wearing, using, storing and basic inspection is necessary for those who use atmosphere supplying respirators (SCBAs, supplied air line systems, escape respirators) and Powered Air-Purifying Respirators. 

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BYU's Respiratory Protection Program will be evaluated and updated annually or more frequently to coincide with workplace or governing regulation changes.  The purpose of this evaluation is to ensure the provisions of the written program are effectively implemented and continue to be effective as outlined in 29 CFR 1910.134 (l).  The program administrator will manage evaluations.  Findings will be reported to the Risk Management & Safety Department's Safety Director.  The Safety Director and/or the program administrator will submit reports to departments as needed to facilitate and maintain OSHA compliance.  Assistance with program implementation will be provided by the Risk Management & Safety Department. 

Evaluations will include, but are not limited to the following:

  • Review of written program
  • Review of completed Hazard Assessments
  • Determination of effectiveness of program elements (Training, Medical Surveillance, Care and use of respirators, Cartridge Change -outs, Fit Testing)
  • Academic and non-academic departmental support
  • Supervisor involvement and understanding of responsibilities
  • Employee involvement and understanding of responsibilities



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Appendix A

User Seal Checks

Employees wearing a tight fitting respirator must perform positive and negative pressure seal checks every time the respirator is put on and prior to each entry into a hazardous atmosphere according to 1910.134 Appendix B-1

    1. Positive Pressure User Seal Check 
      • Close off exhalation valve with palm
      • Exhale gently
      • A small buildup of positive pressure, with no outward leaks, indicates a good face-piece fit
      • If air leakage is detected, reposition the respirator on the face, readjust the tension of the head bands, or try a different size respirator
      • Repeat the test until a satisfactory seal has been achieved
    2. Negative Pressure User Seal Check 
      • Cover air inlets with palms or other means; if a disposable, cover the entire filtering surface
      • Gently breathe in so that face-piece collapses slightly
      • Hold breath for 10 seconds
      • If respirator remains slightly collapsed and no inward leaks are felt, the face-piece fits tight enough
      • If air leakage is detected, reposition the respirator on the face, readjust the tension of the head bands, or try a different size respirator
      • Repeat the test until a satisfactory seal has been achieved

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Appendix B

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Appendix C

Color Type of Protection
Black Organic Vapor Cartridge
White Acid Gas Cartridge
Yellow Organic Vapor and Acid Gas Cartridge
Green Ammonia and Methylamine Cartridge
Olive Green Combination Cartridge
Purple(Magenta) Dust, Fumes, Mists, Asbestos, Radionuclides and Highly Toxic Particulates Filter

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Appendix D

Identified Tasks or Jobs Requiring Respirators


Task or Position Contaminant Respirator    
Concrete floor sealing 1,2,4 Trimethyl benzene AP Full Face with OV cartridges    
Dry Cleaning Machine Still Clean out Tetra chloroethylene AP Half Face with OV cartridges    
ABC Fire Extinguisher Filling Fire Retardant AP Half Face with P100 cartridges    
AXMB Cabinet Shop Spray Finishing Organic Solvents, two part paints, Lacquer, Formaldehyde AP Half Face with OV and Formaldehyde cartridges    

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Appendix E

Details and examples of Respirators


Filtering Face Piece Respirators (NIOSH approved)

Availability and Types of Use - Dust masks of various kinds, including disposable types, are approved against low concentrations of certain dusts (nuisance dusts, pollen, animal dust, etc.). Anyone using this type of respirator must receive respiratory protection training. Single strap disposable dust masks may not be used at BYU. Limitations - Dust masks provide no protection against gases and vapors and, as they supply no oxygen, they cannot be used in oxygen deficient areas. Neither can they be worn for protection when facial hair extends under the face piece sealing area. The disposable dust masks offer very little protection due to poor sealing characteristics. Procedure - When a dust mask is required for a job situation, the user should: · Put on the mask and adjust it for proper fit. Some masks have adjustable nose-bridge face-sealing areas. · Discard the disposable dust mask after use.


Air-Purifying Half-Mask Respirators

Availability and Types for Use - Half-mask respirators are the most widely used types of respirators.   Each half-mask face piece is equipped with cartridges which purify the air as the wearer breathes. Different types of cartridges are available for filtering various air contaminants. For example, HEPA cartridges protect against low concentrations of radioactive and toxic particulate.

- Since this type of respirator does not supply air, it cannot be used in oxygen-deficient atmospheres or IDLH atmospheres. It can only be used for protection against the contaminants listed on the cartridge. It cannot be used against natural gas or vapors with poor olfactory warning properties. The wearer should leave an area immediately if the smell of gas or vapor is detected inside the mask or if the breathing resistance increases. The half-mask respirator shall not be worn when facial hair extends under the face-mask sealing area.

- To put on and adjust a half-mask:

Use the mask approved for use, as specified during the fitting session.

Hold the mask so the narrow nose-cup points upward.

Grasp both lower mask straps and hook them behind the neck and place the top cradle straps on the top and behind the head.

Adjust the straps so the fit is snug but comfortable.

Check for leaks when possible by covering the filter inlet opening with the palms of the hands and inhaling gently. If the mask pulls in toward the face, the fit is good. This is known as a negative pressure fit check.

Check for leaks when possible by covering the exhalation valve and blowing out gently. The mask should hold a slight positive pressure. This is known as a positive pressure fit check.


Full Face-Mask Respirators


Availability and Types for Use - Full face-mask respirators provide more protection than half-masks because their shape allows a better mask-to-face seal. They also protect the eyes from irritating chemicals or particulate atmospheres. Full face-masks come equipped with selective types of air-purifying canisters/cartridges, dependent upon the protection required. Additionally, full face-masks are available with air-supplied systems such as air lines or SCBA units. Special arrangements must be coordinated with outside vendors or contractors if this type of protection is required.

- Air-purifying full face-masks have the same limitations for use as half-mask respirators. Additionally, standard eyeglasses interfere with the mask-to-face seal; therefore, respirator wearers should obtain an additional pair of glasses through their department for installation into a mask. Limitations for use of full face mask with air-supplied systems is covered under subsection 4.15 on SCBA.

- To put on a full face-mask:

Loosen all straps, pull the harness over the head, and place the chin in the chin cup.

Pull the head harness well down on the back of the head.

Tighten the harness gently, starting with the bottom straps and then the middle and top straps.

Check the fit by closing off the air hose or canister opening with the palm of the hand and inhaling gently. The user should then hold his/her breath for a few seconds. A good fit is indicated if the mask remains collapsed toward the face during this time.

A positive fit check should also be conducted.


Powered Air Purifying Respirators (PAPR)

Availability and Types For Use - PAPR units are belt-mounted battery-powered blower respirators. Contaminated air, containing moderate concentrations of toxic particulates are passed through the HEPA cartridge(s) and a constant supply of purified air is supplied to a face piece, helmet, or hood. Since the blower has rechargeable batteries, it can be reused with the addition of a freshly charged battery or after the batteries have been recharged. A PAPR unit with a helmet or a hood can be worn by an employee with a beard since this unit does not require a good seal between the face and the respirator.

Limitations - A PAPR with a belt-mounted blower and HEPA cartridges cannot be used in an oxygen-deficient atmosphere or in IDLH atmospheres or for protection against gases or vapors. The batteries should be fully charged before using the blower.

- To use a powered air purifier:

Check the unit to ensure that the HEPA cartridge(s) are securely attached.

Mount the unit on your waist and adjust the belt until it is comfortable.

Don the face mask, helmet or hood.

Turn the blower on. Air will flow into the mask.


Self-Contained Breathing Apparatus (SCBA)

Availability and Types For Use - SCBA units provide the user with a pure supply of breathing air regardless of ambient air contamination. They may be used in atmospheres unsuitable for air-purifying respirators. This includes use in IDLH atmospheres, in confined spaces, and for emergencies where breathing hazards may exist. The use of such equipment by University personnel comes under the control of the EH&S Respiratory Protection Program. SCBA units may be used in IDLH atmospheres only in conjunction with a positive-pressure full face-mask. All employees using SCBA must receive specialized training.

- The air supply in a standard SCBA cylinder is normally rated for a 30-minute duration; however, heavy exertion and stress will increase breathing rates and deplete the air in less than 30 minutes. When the alarm bell on the unit sounds, the wearer has about 5 minutes of air remaining and should leave the area immediately. No one should work alone in hazardous atmospheres; a standby with SCBA and proper communications equipment should always be nearby. The positive-pressure full face mask used with the SCBA unit cannot be worn when facial air extends under the face piece sealing area of the mask.

· Remove the unit from its case or cabinet and inspect it to ensure that it is operating properly before donning it. Follow the instructions specified by the SCBA manufacturer for air cylinder operation.

Check cylinder gauge for a "full" indication.

Check the connection between the cylinder and high pressure hose to assure that it is snug.

Don the SCBA unit and adjust harness.

Stretch hose, and check overall condition of mask (straps, lens, etc.).

Put mask on and adjust, starting with bottom straps, then temple straps, and finally top strap (pull top strap snug, not tight).

Place palm over end of hose and inhale slowly until mask is drawn toward face; hold breath for 10 seconds to see whether there is any leakage in the face piece-to-face seal.

With palm still over the end of the hose, exhale, noting whether there is any leakage around the face piece. (This step also clears the exhalation valve).

Connect breathing hose to regulator.

Always switch regulator to positive-pressure mode (up) before entry into hostile atmosphere.

A monthly inspection of the SCBA unit is recommended to ensure proper operation for emergency use (Appendix F)".

Pressure-Demand Regulator - the pressure-demand regulator minimizes any chance of contaminants leaking into the mask during inhalation, because the entire face mask is kept at positive pressure in relation to the ambient atmosphere. A special full face-mask equipped with a positive-pressure exhalation valve is held closed by air pressure to prevent contaminants from leaking into the face piece during inhalation. Because proper performance of the pressure demand regulator is essential to the wearer's protection, any problems with the regulator must be immediately reported to EH&S personnel.

Specialized Respiratory Protection Equipment

Use of a pressure-demand, air-line system may be permitted in an IDLH atmosphere under certain conditions. For example, if protection is required over an extended period of time, it would be impractical to use SCBA because of frequent bottle-changing requirements. Should the above type protective equipment or other specialized equipment be required, contact EH&S personnel for consultation and evaluation of the needs.


This procedure limits the type of respirators to use during emergencies where breathing hazards may exist.


Escape Respirators

Supplied Air Line

Emergency Situations

An emergency can be defined as "an unforeseen combination of circumstances that calls for immediate action." Respiratory hazards often occur during emergencies when fire fighters or other emergency service personnel need immediate entry into a fire, hazardous materials emergency or accident scene. Other types of breathing hazards may occur when personnel are exposed to hazardous substances while trapped by an accident or escaping from the scene of a fire or accident, or when they are exposed to hazardous spills; an unforeseen chemical reaction may also result in an overexposure to hazardous substances.

Acceptable Type of Equipment During Emergencies

Each respiratory protection device has a limited ability to protect health. During emergency entry, when there is usually neither time nor opportunity to evaluate the degree of exposure, only SCBA operating in the pressure-demand mode should be used. SCBA are approved for use in IDLH atmospheres. After the type and degree of breathing hazards are evaluated, other respiratory equipment may be recommended.

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Appendix F

Tight Fitting and Loose Fitting Respirators




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Appendix G

Examples of respirators that are not approved by NIOSH.  A single strapped dust mask, a surgical mask and a bandana. 





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Appendix H

Frequently Asked Questions (FAQs)

1.  Can a BYU employee select and buy their own respirator and use it at work?

The answer to this question has two parts: required use and voluntary use, explained below. 

Required Use:  When the user of a respirator is required by the employer, then the employee cannot select and buy their own.  Employer required use triggers inclusion in a full respiratory protection program covering all the elements, medical evaluation [initially via questionnaire], training, fit-testing, hazard assessment and selection of correct type and size of respirator).  These elements are required annually or whenever the exposure changes. 

Voluntary Use:  Respirator use can be voluntary (supplied by employee or employer) for exposures that do not exceed current OSHA PELs or ACGIH TLVs filtering face piece respirators or tight fitting respirators may be used voluntarily.  However, tight-fitting respirator users must follow the portions of the BYU Respiratory Protection Program.  This ensures that; the employee is medically able to wear the respirator, that it will not itself create a hazard, and that it will be cleaned, stored and maintained so as it does not create a health hazard to the user.

2.  Is a dust mask a respirator? 

Answer:  If it is NIOSH (National Institute for Occupational Safety) approved, then it is a respirator and falls within the scope of OSHA's Respiratory Protection Rule, 29 CFR 1910.134.  NIOSH will be indicated the respirator and container it is packaged in. 

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Appendix I


Abrasive Blasting Respirator: A respirator designed to protect the wearer from inhalation of, impact of, and abrasion by materials used or generated in abrasive blasting.

Aerodynamic Diameter: The diameter of a unit density sphere having the same terminal settling velocity as the particle in question.

Aerosol: particles, solid or liquid, suspended in air.

Airline respirator: An atmosphere supporting respirator in which the respirable gas is not designed to be carried by the wearer (formerly called supplied air respirators).

Air-purifying respirator: A respirator in which ambient air is passed through an air purifying element that removes the contaminant(s). Air is passed  through the air-purifying element by means of the breathing action or by a blower.

Approved: See certified.

Assigned Protection Factor (APF): The expected workplace level of respiratory protection that would be provided by a properly functioning respirator or a class of respirators to properly fitted and trained users.

Atmosphere-Supplying Respirator: A class of respirators that supply a respirable atmosphere, independent of the workplace atmosphere.

Bioassay: A determination of the concentration of a substance in biological fluids and tissue by analysis of urine, feces, blood, bone, tissue, etc.

Canister/cartridge: A container with a filter, sorbent, or catalyst, or combination of these items, which removes specific contaminants from the air passed through the container.

Ceiling Concentration: The concentration of an airborne substance that shall not be exceeded during any part of the working exposure.

Certified: Evaluated and listed as permissible by the National Institute for Occupational Safety and Health (NIOSH), the Mine Safety and Health Administration (MSHA), or the Bureau of Mines (BM).

Confined Space: An enclosed space that has the following characteristics: *Its primary function is something other than human occupancy; *It has restricted entry and exit; *It may contain potential or known hazards. Examples of confined spaces include, but are not limited to: tanks, silos, vessels, pits, sewers, pipelines, tank cars, boilers, septic tanks, utility vaults. Tanks and other structures under construction may not be considered confined spaces until completely closed. Restricted entry and exit means physical impediment of the body, e.g.--use of the hands or contortion of the body to enter or exit from the confined space.

Contaminant: A harmful, irritating, or nuisance airborne material.

Continuous flow respirator: An atmosphere-supplying respirator that provides a continuous flow of respirable gas to the respiratory inlet covering.

demand respirator: An atmosphere-supplying respirator that admits respirable gas to the face piece only when a negative pressure is created inside the face piece by inhalation.

Disposable Respirator: A respirator for which continued use and maintenance is not intended and that is designed to be discarded after excessive resistance, sorbent exhaustion, physical damage, or end-of-service-life renders it unsuitable for use. Examples of this type of respirator are a disposable half-mask respirator or a disposable escape-only self-contained breather apparatus (SCBA).

Dust: An aerosol consisting of mechanically produced solid particles derived from the breaking up of larger particles. Dusts generally have a larger particle size when compared to fumes.

Emergency Situation: Any occurrence such as, but not limited to, equipment failure, rupture of containers, or failure of control, equipment that may or does result in an uncontrolled significant release of an airborne contaminant. 

Employee Exposure: Exposure to a concentration of an airborne contaminant that would occur if the employee were not using respiratory protection.

End-of-service-life Indicator (ESLI): A system that warns the user of the approach of the end of adequate respiratory protection.

Escape-only Respirator: A respirator intended only for use during emergency egress from a hazardous atmosphere.

Exhalation Valve - A device that allows exhaled air to leave a respiratory device and prevents outside air from entering through the valve.

Exposure Limit: The maximum allowable concentration of a contaminant in the air to which an individual may be exposed. These may be time-weighted  averages, short-term limits, or ceiling limits.

Face piece
- That portion of a respirator that covers the wearer’s nose, mouth, and/or eyes. Designed to make a gas-tight or dust-tight fit with the face, it includes the headbands, exhalation valve(s), and connections for an air-purifying device.

- A fibrous medium used in respirators to remove solid or liquid particles from the inspired air.

Filtering Face piece (Dust Mask): A negative pressure particulate respirator with a filter as integral part of the face piece or with the entire face piece composed of the filtering medium. 

Fit Check: A test conducted by the wearer to determine if the respirator is properly sealed to the face.

Fit Factor: A quantitative measure of the fit of a particular respirator to a particular individual.

Fit Test: The use of a challenge agent to evaluate the fit of a respirator on an individual.

Fume: Solid aerosols formed by condensation of a gas or vapor. Fumes generally have a smaller particle size when compared to dusts.

Gas: A fluid that has neither independent shape nor volume and tends to expand indefinitely at room temperature. 

Hazardous Atmosphere: An atmosphere that contains a contaminant(s)
in excess of recognized exposure limit is potentially explosive, or that is oxygen deficient.

Hazard Ratio: A number obtained by dividing the concentration of a contaminant by its exposure limit.

Helmet: A hood that offers head protection against impact and penetration.

High-efficiency Particulate Air (HEPA) Filter: A filter that removes from the air 99.97% or more of the aerosols having a diameter of 0.3 um.

Hood: A respiratory inlet covering that completely covers the head and neck and may cover portions of the shoulders. 

Immediately Dangerous to Life or Health (IDLH): Any atmosphere that poses an immediate hazard to life or poses immediate irreversible debilitating effects on health.

Inhalation Valve - A device that allows respirable air to enter the face piece and prevents exhaled air from leaving the face piece through the intake opening.

Interior Structural Firefighting: The physical activity of fire suppression, rescue or both, inside of buildings or enclosed structures which are involved in a fire situation beyond the incipient stage.

Loose-fitting Face piece: A respiratory inlet covering that is designed to form a partial seal with the face, does not cover the neck and shoulders, and may

or may not offer head protection against impact and penetration.

Mass Median Aerodynamic Diameter (MMAD): A point in an aerodynamic particle size distribution where half of the mass lies in particles with a diameter less than the MMAD and half in particles with diameters greater than the MMAD.

Mist: An aerosol composed of liquid particles.

Mouthpiece and Nose-clamp Assembly: A respiratory inlet covering that is held in the wearer’s mouth and must always be used in conjunction with a nose clamp. 

MSHA - Mine Safety and Health Administration - A Federal agency that tests, approves, and certifies respiratory protection equipment.

Negative-pressure Respirator: A respirator in which the air pressure inside the respiratory inlet covering is negative during inhalation with respect to the ambient air pressure.

NIOSH - National Institute for Occupational Safety and Health - A Federal agency that tests, approves, and certifies respiratory protection equipment.

Occupational Health Professional: An individual whom, by experience and education, is competent at recognizing, evaluating, and controlling health hazards in the workplace. 

OSHA - Occupational Safety and Health Administration - The Federal Agency which sets the minimum requirements for respirator use.

Oxygen Deficient Atmosphere: An atmosphere with oxygen content below 19.5% by volume.

Permissible Exposure Limit (PEL): An exposure limit that is published and enforced by OSHA as a legal standard. PEL may be either a time-weighted-average (TWA) exposure limit (8 hour), a 15-minute short term exposure limit (STEL), or a ceiling (C). The PELs are found in Tables Z-1,Z-2, or Z-3 of OSHA regulations 1910.1000.

Pesticide - For the purpose of this manual, the terms pesticide and pesticide chemical are synonymous with economic poison, as defined under the United States Department of Agriculture’s Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA).

PF - Protection Factor
- The overall protection afforded by a certain type of respirator as defined by the ratio of the concentration of contaminant outside a face-mask to that inside the equipment under conditions of use. For example: if a half-mask respirator has a protection factor of 10, it may be used for protection in atmospheres with a contaminant concentration up to 10 times the permissible exposure limit.

Physician or other Licensed Health Care Professional (PLHCP): An individual whose legally permitted scope of practice allows him/her to independently provide, or be delegated the responsibility to provide, some or all of the health care services required by paragraph (e) of this section.

Poor Warning Properties: A substance whose odor, taste, or irritation effects are not detectable or not persistent at concentrations below the exposure limit. 

Positive-pressure Respirator: A respirator in which the pressure inside the respiratory inlet covering is normally positive with respect to ambient air pressure.

Powered Air-purifying Respirator: An air-purifying respirator that uses a blower to force the ambient atmosphere through air purifying elements to the inlet covering, maintaining positive pressure in the face piece.

Pressure-demand Respirator: A positive pressure atmosphere-supplying respiratory that admits respirable gas to the face piece when the positive pressure is reduced inside the face piece by inhalation.

Pulmonary Function Test - Tests requiring use of an approved spirometer including forced vital capacity (FVC), the maximum amount of air that can be expired from the lung after full inhalation, and forced expiratory volume after one second (FEV-1), the amount of air forcibly expired in one second after full inhalation.

Qualitative Fit Test: A pass/fail fit test that relies on the subject’s sensory response to detect the challenge agent (for example: irritant smoke, banana oil, or saccharin tests).

Quantitative Fit Test: A fit test that uses an instrument to measure the challenge agent inside and outside the respirator quantitatively giving at fit factor number (for example: Portacount™).

Radionuclide: An atom that spontaneously emits particles, gamma, or x-radiation.

Resistance - Opposition of the flow or air, as through a canister, cartridge, or particulate filter.

Respirator: A personal device designed to protect the wearer from the inhalation of hazardous atmospheres.

Respiratory Inlet Covering: That portion of a respirator that connects the wearer’s respiratory tract to an air-purifying device or respirable gas source, or both. It may be a face piece, helmet, hood, suit, or mouthpiece/nose-clamp.

Sanitization: The removal of contaminants and the inhibiting of the action of the agents that cause infection or disease.
Self-contained Breathing Apparatus (SCBA): An atmosphere-supplying respirator in which the respirable gas source is designed to be carried by the wearer.

Service Life: The period of time that a respirator provides adequate protection to the wearer.

Sorbent: A material that is contained in a cartridge or canister and removes specific gases and vapors from the inhaled air.

Suit: A respiratory inlet covering designed to cover the entire body. This term does not include protective clothing that only provides skin protection.

Supplied-air Respirator (SAR) or Airline Respirator: An atmosphere-supplying respirator for which the source of breathing air is not designed to be carried by the user.

TLV - Threshold Limit Value - A list published yearly by the American Conference of Governmental Industrial Hygienists as a guide for exposure concentrations that a healthy individual normally can tolerate for eight hours a day, five days a week, without harmful effects. Airborne particulate concentrations are generally listed as milligrams per cubic meter of air (mg/m3). Gaseous concentrations are listed as parts per million (ppm) by volume.

Tight-fitting Face piece: A respiratory inlet covering that is designed to form a complete seal with the face. A half-face piece (includes quarter masks, disposable masks, and masks with elastomeric face pieces) covers the nose and mouth; a full face piece covers the nose, mouth, and eyes.

Time-weighted Average (TWA): The average concentration of a contaminant in air during a specific time period (commonly 8 hours for OSHA compliance).

User Seal Check: An action conducted by the respirator user to determine if the respirator is properly seated to the face.

Vapor: The gaseous phase of matter that normally exists in a liquid or solid state at room temperature.

Voluntary use:  Voluntary use is when an employee chooses to wear a respirator, even though the use of a respirator is not required by either the employer or by any OSHA standard.  There is no definition for the term “voluntary use” in the OSHA standard, the above definition came from OSHA’s “Small Business Entity Guide” page C3.

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Appendix J

Click on the following link to view a copy of the OSHA Respiratory Protection Program, 29 CFR 1910.134



Content date: 1 January 2012
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