| Popis: |
A brief accounting is given of early attempts to develop limits on the levels of volatile industrial substances to which workers could be exposed. The progression of events leading to the formation of the American Conference of Governmental Industrial Hygienists (ACGIH) and its Airborne Contaminants Committee, later to be the Threshold Limit Value (TLV) Committee, is explained. Currently, the TLV Chemical Substances Committee has four subcommittees which review the data for different types of industrial substances. As the TLVs are lowered to prevent evidence of toxicity in exposed workers, the possibilities for fire/explosion due to reaching flammable limits are also decreased. |
