Title 42
SECTION 84.177
84.177 Total noise level test - PAPR classes HE and PAPR100.
§ 84.177 Total noise level test - PAPR classes HE and PAPR100.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.