Workplace limits

Beryllium-containing materials can be potentially harm fill if mishandled. Care must be taken in the fabrication and processing of beryUium products to avoid inhalation of airborne beryllium particulate matter such as dusts, mists, or fumes in excess of prescribed workplace limits. Inhalation of fine airborne beryllium may cause chronic beryllium disease, a serious lung disorder, in certain sensitive individuals. However, most people, perhaps as many as 99%, do not react to beryUium exposure at any level (see Beryllium and beryllium alloys). 

Biologische Arbeiisstoffioleranzwerte (Biological Tolerance Value for 0( pa mal e sutes). Arbeitspla gmtzwerte (workplace limit values). 

The workplace limit value Arheitsplatzgrenzwert or AGW) is a substance related limit value. If this value is respected, a risk to health is in general not to be expected. 

See Chemicals Control at the Workplace - Limiting Chemical Hazards at Work, Work Environment Authority, Stockholm 2002 (in English). 

A. The lethal oral dose of antimony in mice is 100 mg/kg at these doses mice developed eosinophilia and cardiac failure. The recommended workplace limit (ACGIH TLV-TWA) tor antimony is 0.5 mg/m as an 8-hour time-weighted average. The air level considered immediately dangerous to life or health (IDLH) is 50 mg/m . 

B. The recommended workplace limit (ACGIH TLV-TWA) tor benzene vapor Is... 

II. Toxic dose. The characteristic rotten egg odor of hydrogen sulfide is detectable at concentrations as low as 0.025 ppm. The recommended workplace limit (ACGIH TLV-TWA) is 10 ppm (14 mg/m ) as an 8-hour time-weighted average, with a short-term exposure limit (STEL) of 15 ppm (21 mg/m ). The Federal OSHA permissible exposure limit (PEL) is 20 ppm as a 15-minute ceiling during an 8-hour workday. Marked respiratory tract irritation occurs with levels of 50-100 ppm. Olfactory nerve paralysis occurs with levels of 100-150 ppm. The level considered immediately dangerous to life or health (IDLH) is 100 ppm. Pulmonary edema occurs at levels of 300-500 ppm. Levels of 600-800 ppm are rapidly fatal. 

B. Inhalation. The recommended workplace limits (ACGIH TLV-TWA) are 50 ppm (188 mg/m ) for toluene and 100 ppm (434 mg/m ) for xylene, as 8-hour time-weighted averages, with a skin notation indicating the potential for appreciable skin absorption. The air levels considered immediately dangerous to life or health (I DLH) are 500 ppm for toluene and 900 ppm for xylene. 

Workplace exposure A flame retarded PS was subjected to two successive simulated recycling cycles and workplace exposure to PBDD/F was monitored during processing. At all stages, exposure to dioxins/furans was below the German workplace limits by about two orders of magnitude. 

The cooling coils at the top of the freeboard zone are nearly always kept at a lower temperature than the cooling coils above the vapor zone. This is because the former have the more rigorous and significant requirement — to keep solvent emissions low enough so that workplace limits are not exceeded. 

Toxic agmt Russian Federation workplace air USA TWA workplace limit... 

Finally, there are certain limitations on the use of the published workplace limits ... 

After dark, all unnecessary doors should be locked and access into the workplace limited and patrolled by security. 

In these adhesives, the polymers and resins are dissolved in organic solvents. The hazard potential is determined by the nature of the solvent (e.g., flammability, irritation potential). Due to the high volatility of the solvents, exposure by inhalation of the vapors is the bi est problem. For most solvents, the maximum concentration at the workplace and limiting factors are laid down (workplace limit value). Due to the small amounts of adhesive used by private users, these limit values are generally not reached or are only exceeded for a very short time. 

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