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:: Monday, August 11, 2003 ::
Canadian Occupational Safety magazine: "Toxicology - Beryllium update - Sudbury forum addresses too-high TLVs Author: Marvin Ross
Although the use of beryllium and its alloys is spreading, the 30-year-old exposure limit designed to protect workers does not, in fact, protect anyone. That was the main message presented by Peggy Mroz, an epidemiologist with the Jewish Medical and Research Center in Denver. Mroz was one of a number of presenters at a forum on beryllium sponsored by the Canadian Auto Workers in Sudbury in mid June.
The current threshold limit value (TLV) of 2 ug/m3 in an eight hour shift, says Mroz, is known as the 'taxi cab standard.' A few scientists sharing a cab ride felt that since beryllium is 100 times more toxic than lead, the safety limit should be 100 times less than that allowed for lead. They added in a bit of a safety factor and decided upon the 2 ug/m3. The U.S. Occupational Safety and Health Association (OSHA) and many Canadian jurisdictions still use that exposure limit, which is not based on science and is too high to protect workers.------------------------------------------- posted 4:06 PM :: reference link ::
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