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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. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    Prior to the 1970s, respirator standards were under the purview of the US Bureau of Mines (USBM). An example of an early respirator standard, Type A, established in 1926, was intended to protect against mechanically generated dusts produced in mines. These standards were intended to obviate miner deaths, noted to have reached 3,243 by 1907.

  4. 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 ...

  5. California Division of Occupational Safety and Health

    en.wikipedia.org/wiki/California_Division_of...

    Cal/OSHA's mission is to protect public health and safety through research and regulation related to hazards on the job in California workplaces as well as on elevators, amusement rides, and ski lifts, and related to the use of pressure vessels such as boilers and tanks. Cal/OSHA requires that qualifying organizations create illness and injury ...

  6. Respirator fit test - Wikipedia

    en.wikipedia.org/wiki/Respirator_fit_test

    If air leaks into a respirator, there is a chance that the particles, vapors, or gas contaminants also may leak in. Recently-approved Redon protocols allow a fit test to be performed in under 3 minutes. [citation needed] The CNP Method of fit testing is OSHA, NFPA and ISO certified (among others).

  7. Immediately dangerous to life or health - Wikipedia

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

    The OSHA definition is part of a legal standard, which is the minimum legal requirement. Users or employers are encouraged to apply proper judgment to avoid taking unnecessary risks, even if the only immediate hazard is "reversible", such as temporary pain, disorientation, nausea, or non-toxic contamination.

  8. Chief of California’s OSHA program steps down as agency ...

    www.aol.com/chief-california-osha-program-steps...

    Brown, a former special assistant to past Cal-OSHA Chief Ellen Widess, has been an outspoken advocate for staffing up Cal-OSHA ever since he first retired from the division in 2014 (he returned as ...

  9. Usage of personal protective equipment - Wikipedia

    en.wikipedia.org/wiki/Usage_of_personal...

    There are two main categories: the air-purifying respirator, which forces contaminated air through a filtering element, and the air-supplied respirator, in which an alternate supply of fresh air is delivered. Within each category, different techniques are employed to reduce or eliminate noxious airborne contents.