42 CFR 84.1145 - Silica dust test; non-powered single-use dust respirators; minimum requirements.

§ 84.1145 Silica dust test; non-powered single-use dust respirators; minimum requirements.

(a) Three respirators will be tested.

(b) As described in § 84.1144, airflow will be cycled through the respirator by a breathing machine at the rate of 24 respirations per minute with a minute volume of 40 liters; a breathing machine cam with a work rate of 622 kg.-m.2/minute shall be used.

(c) Air exhaled through the respirator will be 35° ±2 °C. with 94 ±3 percent relative humidity. #

(d) Air inhaled through the respirator will be sampled and analyzed for respirator leakage.

(e) The total amount of unretained test suspension, after drying, in samples taken during testing, shall not exceed 1.8 milligrams for any single test.

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United States Code
U.S. Code: Title 29 - LABOR

Title 42 published on 15-May-2018 04:40

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 42 CFR Part 84 after this date.

  • 2018-03-22; vol. 83 # 56 - Thursday, March 22, 2018
    1. 83 FR 12527 - Clarification of Post-Approval Testing Standards for Closed-Circuit Escape Respirators; Technical Amendments
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Centers for Disease Control and Prevention, HHS
      Notice of proposed rulemaking.
      Comments must be received by May 21, 2018.
      42 CFR Part 84
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