C.F.R. » Title 42 » CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES › SUBCHAPTER G—OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES › PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES › Subpart F—Classification of Approved Respirators; Scope of Approval; Atmospheric Hazards; Service Time

42 C.F.R. § 84.51

Entry and escape, or escape only; classification

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Respirators described in subparts H through L of this part shall be classified for use as follows:

(a) Entry and escape. Respirators designed and approved for use during entry into a hazardous atmosphere, and for escape from a hazardous atmosphere; or

(b) Escape only. Respirators designed and approved for use only during escape from a hazardous atmosphere.