「Permissible Exposure Limit-Time Weighted Average」
The personnel worked eight hours a day, repeated exposure to this concentration, than didn't have any adverse reactions.
「PEL-Short Term Exposure Limit」
The personnel continuous exposure to this concentration of any 15 minutes, did not have any intolerable irritation or chronic or irreversible organization disease, and the function of anesthesia, to add accident or to reduce the work efficiency.
「Maximum allowable concentration」
This concentration shall not exposed over this any time, to prevent intolerable impulse or physiological disease.
| 關於容許濃度應注意的事項 |
1.僅可作為作業環境改善和管理的依據。
2.不可以兩種不同有害物之容許濃度比做為毒性的相關指標。
3.不得作為非工作場所的空氣汙染指標。
4.不可作為職業疾病鑑定的唯一依據。