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  2. American Conference of Governmental Industrial Hygienists

    en.wikipedia.org/wiki/American_Conference_of...

    The core purpose of the fund is to develop sustainable financial support to ensure the continued existence of ACGIH® TLVs and BEIs. Since its inception the core purpose and ‘cause’ of ACGIH has been to protect workplace employees through the development of science-based occupational exposure guidelines widely known as the TLVs and BEIs.

  3. Threshold limit value - Wikipedia

    en.wikipedia.org/wiki/Threshold_limit_value

    Threshold limit value − ceiling limit (TLV-C): An absolute exposure limit that should not be exceeded at any time. There are TLVs for physical agents as well as chemical substances. TLVs for physical agents include those for noise exposure, vibration, ionizing and non-ionizing radiation exposure and heat and cold stress.

  4. Compressed hydrogen - Wikipedia

    en.wikipedia.org/wiki/Compressed_hydrogen

    Download as PDF; Printable version; ... ACGIH TLV-TWA: Simple asphyxiant: ... This page was last edited on 13 March 2024, at 04:07 (UTC).

  5. List of highly toxic gases - Wikipedia

    en.wikipedia.org/wiki/List_of_highly_toxic_gases

    Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.

  6. Workplace exposure monitoring - Wikipedia

    en.wikipedia.org/wiki/Workplace_exposure_monitoring

    OSHA (Permissible exposure limits or PELs), ACGIH (Threshold Limit Values or TLVs), NIOSH (Recommended Exposure Limits or REL), and Germany's influential MAK values are not just regulatory benchmarks; they are essential for learning about monitoring.

  7. Occupational dust exposure - Wikipedia

    en.wikipedia.org/wiki/Occupational_dust_exposure

    To control an airborne dust, the workplace must first monitor the air for exposures. Typically, concentration of air contaminants is measured and compared to set exposure limits. In the United States, these often follow personal exposure limits (PEL) set by OSHA , or threshold limit values (TLV) set by ACGIH.

  8. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    Threshold Limit Values (TLVs), often determined by the American Conference of Governmental Industrial Hygienists (ACGHI), is a key component in determining the PEL. [11] [10] Other things that contribute to determining the PEL are toxicity and particle size. [10] PELs for chemicals are measured in mg/M 3 (milligrams per cubic meter). [2]

  9. Ultraviolet germicidal irradiation - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_germicidal...

    However, with the increased safety evidence surrounding UV-C for germicidal applications, the existing ACGIH TLVs were revised in 2022. [92] The TLVs for the 222 nm UV-C wavelength (peak emissions from KrCl excimer lamps), following the 2022 revision, are now 161 mJ/cm 2 for eye exposure and 479 mJ/cm 2 for skin exposure over an eight-hour ...