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29 U.S.C. 651 et seq.; 30 U.S.C. 3, 5, 7, 811, 842(h), 844.
60 FR 30355, June 8, 1995, unless otherwise noted.
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Subscribe to: 42 CFR 84.122
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Nomenclature changes to part 84 appear at 69 FR 18803, Apr. 9, 2004.
(a) Resistance to airflow will be measured in the facepiece or mouthpiece of a gas mask mounted on a breathing machine both before and after each test conducted in accordance with §§ 84.124, 84.125, and 84.126, with air flowing at a continuous rate of 85 liters per minute.
(b) The maximum allowable resistance requirements for gas masks are as follows:
| Type of gas mask | Inhalation | Exhalation | |
|---|---|---|---|
| Initial | Final 1 | ||
| Front-mounted or back-mounted (without particulate filter) | 60 | 75 | 20 |
| Front-mounted or back-mounted (with approved particulate filter) | 70 | 85 | 20 |
| Chin-style (without particulate filter) | 40 | 55 | 20 |
| Chin-style (with approved particulate filter) | 65 | 80 | 20 |
| Escape (without particulate filter) | 60 | 75 | 20 |
| Escape (with approved particulate filter) | 70 | 85 | 20 |
| 1 Measured at end of the service life specified in Tables 5, 6, and 7 of this subpart. | |||