This guideline provides information and assistance in the proper selection, use and care of respiratory protection. The purpose of the Guideline is to ensure that respirators are properly selected and used to provide adequate protection for emergency responders from airborne health hazards associated with operations at the Umatilla Chemical Weapons Depot. The primary airborne hazard of concern is potential exposures to HD (Mustard Agent).
This Guideline applies to all Department of Health Services operations and all uses of respirators including NIOSH approved disposable respirators (e.g., "dust masks"), and voluntary use of respirators. Voluntary respirator users are included in the full scope of this program. This Guideline will serve as the written Respiratory Protection Program.
The following references contain supporting information for the Guideline:
Respirators must meet a number of important design criteria to ensure adequate protection for users. These criteria are based upon regulatory requirements from OSHA. These criteria address the following:
Appendix One of this Guideline contains detailed information on these design criteria. Proper selection of respirators must incorporate this information. The CSEPP Personal Protective Equipment Coordinator (DHS) should be contacted for assistance in selecting the correct respiratory protection for an operation based upon the design criteria in Appendix One.
A number of performance criteria have been established for respiratory protection which must be considered for proper selection and use of respirators. These criteria include the following:
Appendix Two contains detailed information on these performance criteria.
a. Facial Hair
Facial hair cannot be present in areas of the face against which the seal with the respirator will be made. This may include side burns and beards. Facial hair can prevent a good seal and void the protection provided by the respirator. Long mustaches and beards can also interfere with the inhalation and exhalation valves on respirators. Users of respirators must be clean-shaven on all portions of the face where facial hair could interfere with the seal and proper operation of the respirator.
b. Good Fit
Users of respirators must obtain a good fit between the respirator face piece and their face. Because faces vary widely in terms of facial dimensions, it is usually not possible to obtain a good fit on all users with a single size of face piece. In order to ensure that users can obtain a good fit with a respirator, the following steps will be taken:
c. Interchanging of Respirator Parts
It is not acceptable to interchange parts from different manufacturers or replace parts for one model with parts from a different manufacturer. The NIOSH approval for the respirator is based upon the specific design and construction of the respirator at the time the model was evaluated by NIOSH. Changing parts will void this approval.
d. Specific Applications
Respirators are selected for use in specific applications based upon the design criteria and performance criteria described above and the nature of the operation in question. They should not be used for applications which have not been evaluated or for operations not intended when initially selected. Respirators used in the CSEPP program have been evaluated and approved for potential exposures to HD agent.
* MSA Ultraview, full-face respirators or 3M hooded respirators will be issued to 1st Responders and 1st Receivers participating in CSEPP.
e. Need for corrective lenses with Respirators
If users must wear corrective lenses, either eyeglasses, spectacle kits, or contact lenses may be acceptable options depending on the type of respirator. Information on spectacle kits (e.g., lens inserts in respirator face piece), can be obtained from the CSEPP Personal Protective Equipment Coordinator (DHS)
THE USE OF CONTACT LENSES WITH FULL FACE PIECE RESPIRATORS IS ALLOWED WHERE THE USER HAS SUCCESSFULLY WORN CONTACT LENSES BEFORE, AND PRACTICES WEARING THEM WITH THE RESPIRATOR.
RESPIRATOR CARTRIDGE SELECTION
RESPIRATORS THAT USE DETACHABLE FILTERING CARTRIDGES ARE DESIGNED SO A USER CAN INTERCHANGE FILTER MEDIUM SO THAT THE FACE PIECE CAN BE USED IN DIFFERENT ENVIRONMENTS. IT IS IMPORTANT TO UNDERSTAND THAT THE CARTRIDGE MUST BE PROPERLY SELECTED FOR THE CONTAMINANT OF CONCERN. ORGANIC VAPOR CARTRIDGES WILL NOT PROTECT THE USER FROM HAZARDOUS PARTICULATES AND PARTICULATE FILTERS WILL NOT PROTECT THE USER FROM ORGANIC VAPORS. SOME CARTRIDGES ARE STACKED. STACKED CARTRIDGES CONSIST OF MULTIPLE TYPES ATTACHED TOGETHER TO REMOVE MORE THAN ONE TYPE OF CONTAMINATE.
THE CARTRIDGES SELECTED FOR USE BY CSEPP PERSONNEL ARE A STACKED CARTRIDGE THAT IS CAPABLE OF FILTERING OUT ACID GASES AND ORGANIC VAPORS AND PARTICULATES. THE CARTRIDGES ARE IDENTIFIED WITH A PURPLE AND YELLOW LABEL.
The CSEPP Personal Protective Equipment Coordinator (DHS) should be contacted to provide assistance in the following areas:
The PPE hazard assessment is performed to identify the types of hazards present and the level of protection required. This assessment takes into account the following items:
Respirators are issued by the CSEPP Personal Protective Equipment Coordinator (DHS). Each person in the CSEPP program using a respirator must be medically authorized, trained and fit tested prior to a respirator being issued. Training and fit testing must be completed annually, as required by OSHA regulations.
Each user of a respirator must be medically evaluated bi-annually to verify that he/she is medically capable of using and wearing the respirator without adverse health effects. This evaluation is administered by a medical director. The medical director determines what physiological and psychological conditions are pertinent for wearing of different types of respirators. Authorization from the medical director must be received for each user, along with any limitations on use, before the user can be assigned or use a respirator.
* DHS will utilize Health Options; Dr. Fulper to medically evaluate 1st Responders and 1st Receivers identified in CSEPP.
Note: Users must complete health surveillance checklists bi-annually. If indicated by the responses, physical assessment and testing may be performed.
Fit testing consists of checking for leakage around the respirator’s face piece to face seal using a safe test atmosphere. This is performed while the user is wearing either the actual respirator to be used during the operation of concern, or the same make/model/type of respirator to be used. Fit testing shall be performed for all tight-fitting respirators, including air line and SCBA face pieces, and must use an OSHA acceptable protocol.
The fit testing must be performed annually, usually as part of the annual training (see Section D). The user can only be assigned models on which he/she has successfully been fit tested. Information on the acceptable types of models determined for each user will be documented in DHS employee files.
DHS will utilize:
Quantitative fit testing is based upon measuring the concentration inside and outside of the respirator in order to determine the level of protection provided.
Positive-pressure respirators, including full-face piece respirators ( i.e. PAPR’s, or SCBA’s) will be fit tested in the negative pressure mode by using either qualitative or quantitative methods.
When quantitative fit testing is used to fit test a tight fitting, full-face piece negative pressure respirator, a fit factor of 500 or greater is required. See Table I below to illustrate this point.
| Type of respirator | mode of operation | required fit factor when using quantitative fit testing | Assigned protection factor |
| MSA full-face | negative pressure | 500 | 100 |
A. General
Respiratory Protection must be properly inspected, cleaned and maintained, per manufacturer’s recommendations, each day the respirator is used. Face pieces should be inspected to ensure that all of the parts are present and the face piece is not damaged.
DHS respirators issued for the exclusive use of a single user shall be cleaned and disinfected as often as necessary to be maintained in a sanitary condition. Respirators issued to more than one user shall be cleaned and disinfected before being worn by different individuals.
B. SCBA’s
SCBA’s must be inspected on a monthly basis and a written record of the inspection will be kept and readily available. The record indicates the date, identification number of the SCBA, and the inspector’s name. This inspection should address the following items to ensure they are in good working order:
C. Training
DHS users of respirators must receive training on an annual basis on the following:
D. Documentation
The following aspects of the Respiratory Protection Program provide documentation of the program:
E. Self Audit of the Program
An inspection of the Program should be performed at least annually. A checklist which can be used for this inspection by the CSEPP Personal Protective Equipment Coordinator (DHS) is included with this Guideline.
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The following design criteria must be considered when selecting and using respiratory protection:
There are four classes of respiratory protection from which to select. The table in this Appendix describes the four classes and key features of each class.
Approved Respiratory Protection
All respiratory protection must be approved by the National Institute for Occupational Safety and Health (NIOSH), the Mine Safety and Health Administration (MSHA), or other applicable local regulatory agencies. This approval is indicated by an approval number shown on the respirator which starts with TC and is followed by a code corresponding to the type of protection the respirator is approved for and the specific approval number for that model of respirator.
For example:
TC -23C-158 Approved for dusts, fumes and mists (23C designation) with the individual approval number 158
Because users' faces vary in size and shape, a single size of face piece may not be adequate for all users required to use a respirator. It is important when setting up a Respiratory Protection Program that users can choose the best fitting face piece from several different sizes and/or shapes of face piece. This can be accomplished by offering several different sizes of a given model by the same manufacturer. In some cases, it may be necessary to offer several brands with several sizes of face piece in order to fit all users.
Breathing air used for supplied air respirators or SCBAs must meet specific criteria for quality. These criteria are presented in the chart in this Appendix.
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Classes of Respirators |
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| Class of Respirator | Characteristics of Class |
Size/Design Types |
| 1. Air Purifying (APR) | CConsists of face piece plus cartridge or filter; protection depends on specific filter or cartridge. Works by cleaning outside air with cartridge or filter. Good for most (but not all) chemicals. Disposable respirators do not require maintenance or storage, but are available only in half-face. Not appropriate for oxygen deficient atmospheres. | • half-face - disposable
• half-face - dual cartridge • full-face - dual cartridge |
| 2. Supplied Air | Consists of face piece, regulator, source of breathing air: compressor or compressed air cylinders. Supplies clean breathing air usually through airline, (exception, escape pack) to respirator face piece; does not require special filter cartridges. Good for all types of chemicals. Time limits for operation depend upon supply of air available. More complicated and expensive than PAPR. |
• full-face - pressure deman • full face with 5 minute egress, escape pack |
| 3. Self-Contained Breathing Apparatus (SCBA) | Consists of face piece, regulator, source of breathing air: cylinder on back. Supplies clean breathing air to respirator face piece. Does not require special filters or cartridges. Highest level of protection available. Limit on use determined by capacity of cylinder; typically 30 minutes. | • full-face - pressure demand |
| 4. Powered Air-Purifying Respirators (PAPRS) | Consists of face piece, cartridges and battery-operated fan; protection depends on type of specific filter or cartridge. Works by forcing air through cartridge using fan to clean outside air. Good for limited number of chemicals. More complicated and expensive than APR. Not appropriate for oxygen deficient atmospheres. | • Hard hat with face shield - air blows down in curtain in front of face. |
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Design Criteria for Grade D Breathing Air*
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| Component | Specification |
| 1. % Oxygen | 19.5-23.5% at standard temp and pressure. Balance of air = predominantly nitrogen. |
| 2. Water | Water content should be below the dew point for the temperature encountered during the operation at pressure of 1 atmosphere (i.e., 760 mmHg). |
| 3. Hydrocarbons |
(i.e., oil mist) Less than 5 mg/m3 in air. |
| 4. Odor | No "pronounced" odor which would render the air unsatisfactory for breathing purposes. |
| 5. Carbon Dioxide | Less than 1000 ppm (by volume) |
| 6. Carbon Monoxide |
20 ppm or less (by volume) |
* Refer to air analysis test results for confirmation of air quality.
* Compressed Gas Association, Commodity Specification for Air, Pamphlet G-7.1
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Chart A - Limitations of Respirators
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| Class of Respirator | Limitations |
| 1. Air Purifying Respirators | a. Cannot be used in oxygen deficient atmospheres.
b. Protection limited to substances for which appropriate filter cartridge exists. c. Generally, cannot be used for chemicals without adequate warning properties. d. Cannot be used if expected air concentration is more than 10xPEL (half face) or 50xPEL (full face). e. Organic cartridge respirators not adequate for air concentrations above 1000 ppm. f. Must obtain good fit on all users--requires several brands, models and sizes for large population of users. Cartridges must be replaced periodically; exact schedule depends on contaminant of concern, and operational conditions. g. Requires physical respiratory system effort by users to pull air through filters/cartridges. f. Exposure assessment has been performed. g. Cannot be used in IDLH environments. |
| 2. Supplied Air Respirators | a. Requires source of Grade D breathing air.
b. Apparatus restricts movement. c. Hose can be pinched, hindering the supply of air. d. Hose can be severed, stopping the supply of air and exposing wearer to contaminated atmosphere. e. Location of compressor must be away from sources of contamination. g. Hose length may restrict application. h. Time limit for the operation defined by amount of air available. |
| 3. Self-Contained Breathing Apparatus (SCBA) |
a. Length of use limited by supply of air cylinder (about 30 minutes). b. Increases weight and bulk of person, physical strength required. c. Requires additional training. d. Requires additional maintenance after use. e. Requires inspection/testing of cylinder. f. Requires Grade D breathing air. |
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CHART B: RESPIRATORY PROTECTION FACTORS (1) |
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| Type of Respirator | Facepiece Pressure (2) (10) |
Protection Factor (PF) | |
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I. Air-Purifying |
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A.
|
Particulate (3) removing | -- |
5 |
| -- | 5 | ||
| Half-mask, dust (6) | -- | 10 | |
| Half-mask, fume (7) | -- | 10 | |
| Half-mask, High-Efficiency (8) | -- | 50 | |
| Full Facepiece, High-Efficiency | -- | 50 | |
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B.
|
Gas and Vapor-Removing (9) |
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| Half-Mask | -- | 10 | |
| Full Face piece | -- | 50 | |
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II. Atmosphere-Supplying |
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A.
|
Supplied-Air |
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| Pressure-Demand, Full Face piece | + | 2,000 | |
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B.
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Open-Circuit, Pressure-Demand, Full Face piece | + |
10,000 |
| III. Combination Respirator | |||
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A.
|
Any combination of supplied-air respirator and a SCBA. |
Use the minimum protection factor listed above for type of mode of operation | |
* For procedures for inspecting, cleaning and refilling SCBA cylinders, air paks and masks refer to Breathing Air Compressor Log & Instructional Sheets Manual.
Source: A Guide to Industrial Respiratory Protection
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CHART C: PERFORMANCE CRITERIA FOR SELECTION |
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| Criteria | Issues to be Addressed |
| 1. Oxygen content |
If an oxygen-deficient atmosphere can develop during the operation, only supplied air or SCBA can be used. |
| 2. State of the contaminant |
Physical state (e.g., dust, mist, gas, vapor, or condensation) of the contaminant must be considered for APR systems. |
| 3. Airborne concentration |
Measured or estimated concentration must be determined for proper selection. |
| 4. Exposure Limits |
Health based exposure limits for the contaminants of concern must be taken into account to determine the extent of protection required. These limits should be based upon Department of Health ServicesThreshold Limits (ITLs). |
| 5. IDLH | The possibility of levels that are Immediately Dangerous to Life or Health (IDLH) must be considered. |
| 6. Warning Properties | Contaminants must have warning properties (e.g., odor, irritation, taste, etc.) if air purifying respirators are used (except for dust respirators, including Hg). |
| 7. Irritation of the eyes | If the substance is irritating to the eyes, a respirator with a full face piece should be used. |
| 8. Cancer Potential |
If the substance is a known or suspect human carcinogen, a supplied air respirator must be used when there is significant exposure or potential for exposure. |
| 9. Cartridge Availability |
A cartridge or filter approved for the chemical of concern must be available in order to use air purifying respirators. |
| 10. Skin absorption | The possibility of absorption of the contaminant through the skin must be considered since this will add to the total exposure received by the user. |
| 11. Size of the face |
Multiple sizes and models of facepieces may be needed for a larger population of users due to the variation in facial dimensions. |
| 12. Protection Factor |
The type of respirator required to achieve the necessary protection must be considered in terms of the assigned protection factors for each type or respirator. See the Protection Factor Chart. |
Footnotes:
OSHA’s previous Respiratory Protection Standard used odor detection as the sole criterion for determining the need for routine change of a gas or vapor APR cartridge. In the past, when an odor threshold was below the permissible exposure limit of a particular substance in gas or vapor form, it has been a time-honored practice to allow the user’s first sensing of odor to indicate breakthrough and the need to replace the air-purifying elements. This approach has always had limited efficacy, mainly because of subject and variability in odor detection related to individual differences (e.g., acute conditions such as upper respiratory tract infections, olfactory fatigue) as well as differences in test methodology.
The revised OSHA Respiratory Protection Standard deleted odor detection as a means of determining breakthrough. The revised standard requires either (1) the use of APR cartridges equipped with end-of-service-life indicators (ESLI) -or- (2) implementation of a change-out schedule for canisters and cartridges. Change-out schedules establish the time periods for replacing cartridges and canisters, to ensure they are replaced before the end of their service life.
| 1. | Has a PPE hazard assessment of task/operation been performed? | Yes | No |
| 2. | Have all airborne contaminants associated with the task/operation been identified? | Yes | No |
| 3. | Has respiratory protection been selected and purchased in accordance with design criteria from Respiratory Protection Guideline? | Yes | No |
| 4. | Does respiratory protection adequately protect against the air contaminants associated with task/operation? | Yes | No |
| 5. | Are respirators used only when engineering and administrative controls are not feasible or are in the process of being instituted? | Yes | No |
| 6. | Are respirators adequately stored to protect them against dust, sunlight, heat, extreme cold, excessive moisture, and damaging chemicals? | Yes | No |
| 7. | Have capabilities for cleaning and inspecting respirators to ensure integrity been established? | Yes | No |
| 8. | Are all respirators in use NIOSH approved? | Yes | No |
| 9. | Have users been trained on proper use, maintenance, storage of respiratory protection? | Yes | No |
| 10. | Have users been fit-tested to ensure an adequate fit? | Yes | No |
| 11. | Have all users completed the medical examination required for use of a respirator? | Yes | No |
| 12. | Has medical exam, fit testing and training been documented on Authorization Form for each user? | Yes | No |
| 13. | Have users been assigned their own respiratory protection, not to be used by other users? | Yes | No |
| 14. | When respirators are assigned to individual users, are respirators cleaned, disinfected, inspected, and maintained as frequently as necessary to insure proper function of each respirator? | Yes | No |