12 Va. Admin. Code § 5-481-3680 - Assigned protection factors for respirators[a]
Operating mode |
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I. Air Purifying Respirators (Particulateb only)c: |
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Negative Pressure |
(d) |
Facepiece, halfe |
Negative Pressure |
10 |
Facepiece, full |
Negative Pressure |
100 |
Facepiece, half |
Powered |
50 |
Facepiece, full |
Powered |
1000 |
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Powered |
1000 |
Facepiece, loose-fitting |
Powered |
25 |
II. Atmosphere-supplying respirators (particulate, gases and vaporsf): |
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1. Air-line respirator: |
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Facepiece, half |
Demand |
10 |
Facepiece, half |
Continuous Flow |
50 |
Facepiece, half |
Pressure Demand |
50 |
Facepiece, full |
Demand |
100 |
Facepiece, full |
Continuous Flow |
1000 |
Facepiece, full |
Pressure Demand |
1000 |
|
Continuous Flow |
1000 |
Facepiece, loose-fitting |
Continuous Flow |
25 |
Suit |
Continuous Flow |
(g) |
2. |
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Facepiece, full |
Demand |
h100 |
Facepiece, full |
Pressure Demand |
i10,000 |
Facepiece, full |
Demand, Recirculating |
h100 |
Facepiece, full |
Positive Pressure Recirculating |
i10,000 |
III. Combination Respirators: |
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Any combination of air-purifying and
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aThese assigned
protection factors apply only in a respiratory protection program that meets
the requirements of this section. They are applicable only to airborne
radiological hazards and may not be appropriate to circumstances when chemical
or other respiratory hazards exist instead of, or in addition to, radioactive
hazards. Selection and use of respirators for such circumstances shall also
comply with Radioactive contaminants for which the
concentration values in Table 1, Column 3 of Appendix B to 10 CFR Part 20 are
based on internal bAir purifying
respirators with cThe dLicensees may eUnder-chin type only.
No distinction is made in this section between elastomeric half-masks with
replaceable cartridges and those designed with the fThe assigned protection
factors for gases and vapors are not applicable to radioactive contaminants
that present an absorption or submersion hazard. For tritium oxide vapor,
approximately one-third of the intake occurs by absorption through the skin so
that an overall protection factor of 3 is appropriate when atmosphere-supplying
respirators are used to protect against tritium oxide. gNo NIOSH approval schedule is currently available for atmosphere supplying suits. This equipment may be used in an acceptable respiratory protection program as long as all the other minimum program requirements, with the exception of fit testing, are met (i.e., 12VAC5-481-820 ). hThe iThis type of respirator
may be used as an emergency device in unknown concentrations for protection
against inhalation hazards. External |
Notes
Statutory Authority: § 32.1-229 of the Code of Virginia.
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