OSHA's permissible exposure level
(PEL) and engineering controls give a false impression of precision, and OSHA's analysis assumes that the controls it has specified will result in compliance with the new PEL.
However, C1[O.sub.2] gas has generally been used at high concentrations in industrial applications; relatively few studies have used low concentrations below the permissible exposure level
, 0.1 ppm, of C1[O.sub.2], some of which are reported in what follows.
offers an engineered solution for meeting or exceeding OSHA's Permissible Exposure Level
when lining coreless induction melting furnaces with dry-vihratable silica (or other) refractory materials.
Assessment of the permissible exposure level
to manganese in workers exposed to manganese dioxide dust.
* Increase the percentage of personal exposures for the highest risk occupations in metal/nonmetal mines that are in compliance with the permissible exposure level
for silica by 2%
The primary concern for metalcasting facilities is that the Occupational Safety and Health Administration (OSHA) will lower the permissible exposure level
(PEL) to an unreachable number.
The groups specifically discussed the Occupational Safety and Health Administration's development of crystalline silica regulations, which would lower the permissible exposure level
, and the impact the revised regulation could have on facilities.
The geometric mean (GM) of toluene concentration in the air was 52.80 ppm (10-760 ppm); 54% of the study participants were exposed to toluene concentrations that exceeded the maximum permissible exposure level
Epidemiologic health outcome and exposure studies were not used to develop the initial time-weighted average permissible exposure level
of 2 [micro]g/[m.sup.3].
Before metalcasters have to start worrying about mercury, lowering the permissible exposure level
of silica must be addressed.
Occupational Safety and Health Administration's permissible exposure level
. Urinary MBOCA levels (267.9-15701.1 [micro]g/g creatinine) far exceeded the California Occupational Safety and Health Administration's reference value of 100 [micro]g/L.
In the silica exposure rule proposed by OSHA, the agency asked the SBAR panel to consider a draft rule that contained three options for crystalline silica's permissible exposure level
(PEL): 50 [micro]g/[m.sup.3]; 75 [micro]g/[m.sup.3]; and 100 [micro]g/[m.sup.3]--all of which would be measured as an 8-hr, time-weighted average exposure.