Ventilation 26
Ventilation 26 : The supplying and exhausting of air at the same time to an enclosed machine, room, or an entire building. There are two types of ventilation: (1) General or Dilution: The air contaminants are diluted by natural or mechanical air exchange in the plant. This method is not appropriate for highly toxic contaminants. (2) Local Exhaust: The contaminant is captured at its source, usually by the use of hoods, ducts or vents located near or directly over the source. This is the preferred method where toxic contaminants are released and there is the potential for worker exposure. (An OSH glossary used in safety and health at work which is, adopted by ILO
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