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#76 |
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Typical levels of beryllium that industries may release into the air are of the order of 0.01 µg/m³, averaged over a 30-day period, or 2 µg/m³ of workroom air for an 8-hour work shift. Compliance with the current U.S. Occupational Safety and Health Administration (OSHA) permissible exposure limit for beryllium of 2 µg/m³ has been determined to be inadequate to protect workers from developing beryllium sensitization and CBD. The American Conference of Governmental Industrial Hygienists (ACGIH), which is an independent organization of experts in the field of occupational health, has proposed a threshold limit value (TLV) of 0.05 µg/m³ in a 2006 Notice of Intended Change (NIC). This TLV is 40 times lower than the current OHSA permissible exposure limit, reflecting the ACGIH analysis of best available peer-reviewed research data concerning how little airborne beryllium is required to cause sensitization and CBD. Because it can be difficult to control industrial exposures to beryllium, it is advisable to use any methods possible to reduce airborne and surface contamination by beryllium, to minimize the use of beryllium and beryllium-containing alloys whenever possible, and to educate people about the potential hazards if they are likely to encounter beryllium dust or fumes.
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#77 |
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[edit] See also
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#78 |
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* Category:Beryllium compounds
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#79 |
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* Beryllium's entries at fictional applications of real materials
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#80 |
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* Sucker Bait, a story by Isaac Asimov in which the health hazard of beryllium dust is an important plot point
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#81 |
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[edit] References
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#82 |
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#83 |
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2. ^ New Practical Chemistry, Black and Conant, The MacMillian Company, New York, 1937
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#84 |
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#85 |
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4. ^ Beryllium related details from NASA
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#86 |
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* Los Alamos National Laboratory – Beryllium
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#89 |
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Burrell, AK. Ehler, DS. McClesky, TM. Minogue, EM. Taylor, TP. Development of a New Fluorescence Method for the Detection of Beryllium on Surfaces. Journal of ASTM International (JAI). 2005. Vol 2: Issue 9. http://www.astm.org/cgi-bin/SoftCart...JAI13168.htm?E mystore
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Infante PF, Newman LS. Commentary: Beryllium exposure and Chronic Beryllium Disease. Lancet 2004; 415-16.
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