{"data":{"id":"us/42-cfr-84.140","jurisdiction":"us","citation":"42 CFR 84.140","heading":"Air velocity and noise levels; hoods and helmets; minimum requirements.","body":"Noise levels generated by the respirator will be measured inside the hood or helmet at maximum airflow obtainable within pressure and hose length requirements and shall not exceed 80 dBA.","path":["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","PART 84—APPROVAL OF RESPIRATORY PROTECTIVE DEVICES","Subpart J—Supplied-Air Respirators"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-42.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:11Z","sha256":"4bc41a3f98be31647261485a2021ac1e41c72dd3bcb9f5180ecca45c081e14c8","source_id":"us-cfr","stale":true,"prev":"us/42-cfr-84.139","next":"us/42-cfr-84.141"},"notice":"GroundRules: Original legal text. Not legal advice."}