CFR > Title 42 - Public Health > CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER G—OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES (parts 80 to 87) > PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES > SUBPART H—Self-Contained Breathing Apparatus (§84.70 to §84.104) > 84.103—Man tests; performance requirements.

84.103—Man tests; performance requirements.

(a) The apparatus shall satisfy the respiratory requirements of the wearer for the classified service time.
(b) Fogging of the eyepiece shall not obscure the wearer's vision, and the wearer shall not experience undue discomfort because of fit or other characteristics of the apparatus.
(c) When the ambient temperature during testing is 24 ±6 °C. (75 ±10 °F.), the maximum temperature of inspired air recorded during man tests shall not exceed the following, after correction for deviation from 24 °C. (75 °F.):
Where service life of apparatus is— Where percent relative humidity of inspired air is— Maximum permissible temperature of inspired air shall not exceed—
°F. °C.
1/4 hour or less 0-100 135 57
1/4 hour to 3/4 hour 0-50 50-100 125 1 110 52 1 43
1 to 2 hours 0-50 50-100 115 1105 46 141
3 hours 0-50 50-100 110 1100 43 1 38
4 hours 0-50 50-100 105 1 95 41 1 35
1 Where percent relative humidity is 50-100 and apparatus is designed for escape only, these maximum permissible temperatures will be increased by 5 °C (10 °F).