- 期刊
廢紙回收再製廠勞工噪音暴露與聽力損失研究
Hearing Loss among Noise-Exposed Workers at Paper Recycling Mill
摘要
本研究旨在調查廢紙回收再製廠勞工噪音暴露與聽力損失現況，並探討作業環境噪音是否造成勞工聽力傷害。以台灣中部某縣市回收廢紙製造紙板大型紙廠為對象，將勞工依部門分成四組，施以問卷、作業環境噪音測定及聽力測定，並分析造成聽力閾值改變之因素。 從321人之問卷資料發現現場作業員工以男性為主。環境測定結果顯示製漿、動力、抄紙作業部門噪音量高於85dB(A)，屬於噪音作業環境。男性左右耳聽力三分法、四分法及六分法值各部門並無差異，但4000Hz劣耳聽力閾值則隨部門有顯著不同。調整年齡後，隨著工作年資增加、擔任現場作業人員、噪音環境測定音量高於85dB(A)，都造成4000Hz劣耳聽力閾值改變。 噪音作業勞工聽力損失指標，若僅使用三分法、四分法或六分法，將無法及早發現勞工聽力問題。長期直接暴露於高噪音，已對造紙廠勞工聽力造成永久性聽力傷害，建議廢紙回收再製廠確實實施『勞工聽力保護計畫』保護勞工聽力。
並列摘要
The aim of this study is to evaluate noise exposure and hearing loss among workers at paper recycling mill and the effects on hearing due to noise at workplace. Workers of a paper recycling mill at middle part of Taiwan were recruited and classified by 4 departments. Questionnaires, environmental noise measurements and Hearing tests were carried out and factors that caused hearing threshold shifts were analyzed. Through 321 questionnaires we found the majority on-site workers were male. Noise levels of on-site departments were higher than 85 dB(A). Although three-, four- or six-distribution methods levels didn't show any difference among departments, 4000 Hz bad ear hearing threshold shifts showed significant difference. After adjusting age, we found the increase of work year, on-site work and work environment noise levels higher than 85 dB(A) made hearing threshold shifts. Using only three-, four- or six-distribution methods as hearing loss indicators will miss the chance of early discovering hearing problems on noise exposed workers. Long-term exposure to high noise levels has induced chronic hearing injury to paper recycling mill workers. We suggest paper recycling mills examine Hearing Conservation Program to avoid advance hearing damage on workers.