Code of Federal Regulations · Section

§ 84.177 — Total Noise Level Test—Papr Classes He And Papr100

42 C.F.R. § 84.177

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Noise levels generated by any powered air-purifying respirators that cover the ears (i.e., hood or helmet) will be measured at the entrance to each ear at maximum airflow obtainable and must not exceed 80 dBA.

42 C.F.R. § 84.176 42 C.F.R. § 84.178

Authorizing Statute

Congressional statement of findings and declaration of purpose and policy
29 U.S.C. § 651
Duties of United States Bureau of Mines
30 U.S.C. § 3