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2. Two-in, two-out - Wikipedia

   en.wikipedia.org/wiki/Two-in,_two-out

   In firefighting, the policy of two-in, two-out refers to United States Occupational Safety and Health Administration (OSHA) policy 29 CFR 1910.134(g)(4)(i). [1] The respiratory protection standard requires that workers engaged in fighting interior structural fires work in a buddy system; at least two workers must enter the building together, so that they can monitor each other's whereabouts as ...

3. Respirator assigned protection factors - Wikipedia

   en.wikipedia.org/wiki/Respirator_Assigned...

   The respiratory protective devices (RPD) can protect workers only if their protective properties are adequate to the conditions in the workplace.Therefore, specialists have developed criteria for the selection of proper, adequate respirators, including the Assigned Protection Factors (APF) - the decrease of the concentration of harmful substances in the inhaled air, which (is expected) to be ...

4. Respirator - Wikipedia

   en.wikipedia.org/wiki/Respirator

   If respirators must be used, under 29 CFR 1910.134, OSHA requires respirator users to conduct a respirator fit test, with a safety factor of 10 to offset lower fit during real world use. [96] However, NIOSH notes the large amount of time required for fit testing has been a point of contention for employers. [112]

5. Immediately dangerous to life or health - Wikipedia

   en.wikipedia.org/wiki/Immediately_dangerous_to...

   The Occupational Safety and Health Administration (OSHA) regulation (1910.134(b)) defines the term as "an atmosphere that poses an immediate threat to life, would cause irreversible adverse health effects, or would impair an individual's ability to escape from a dangerous atmosphere."

6. Workplace health surveillance - Wikipedia

   en.wikipedia.org/wiki/Workplace_Health_Surveillance

   For example, employers must follow the medical evaluation requirements of OSHA's respiratory protection standard (29 CFR 1910.134) when respirators are necessary to protect worker health. Likewise, the OSHA standard for occupational exposure to hazardous chemicals in laboratories ( 29 CFR 1910.1450 ) requires medical consultation following the ...

7. Workplace respirator testing - Wikipedia

   en.wikipedia.org/wiki/Workplace_respirator_testing

   Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).