勞工個人暴露影像監測技術評估

Evaluation of Video Exposure Monitoring Technique: Using Real-Time Aerosol Monitor

傳統的空氣污染物採樣可反應勞工之暴露程度，但對於暴露來源其所能提供之訊息有限。當受到暴露危害之操作持續時間很短時，便無法以整體採樣之結果來偵測暴露之來源。而一項結合直讀式儀器與攝影機的暴露監測技術，即可提供足夠的資訊以鑑定具有暴露危害之操作、評估操作改善之影響及工程控制之成效。同時由於資料是以數位方式儲存，因此可在電腦上進行更進一步的資料分析。利用攝影機攫取工作場所勞工作業情形，並結合污染物監測儀器所測得之污染物濃度的數據或圖形，可作為工業衛生教育及訓練之有利工具。此一技術對於活動與暴露之間的關係提供一直接且有力的證據，此種『眼見為信』的證據比生硬的實驗室數據更能達到衛生教育之目的。本研究之最重要目的即在於透過評估測試以推廣此一技術之應用，期能創造一更安全之工作環境以達成『零災害、零傷害』的目標。

Conventional air samplings can only provide an indication of the extent of a worker's exposure, but provide very little insight into the exposure sources. Determining an activity which causes a change in worker exposure can often be difficult, because the duration of the activity may be too short to be detected with integrated sampling techniques. A computerized data acquisition system, utilizing real time instrumentation and a video taping system can provide the information necessary to identify the exposure-causing work activities, to evaluate the effect of process changes, and to determine the performance of engineering control measures. Since the data are stored digitally, sophisticated data analysis can be performed either on a personal or mainframe computer. Combining the graphic display of the computer with the signal of the video recorder can be a powerful industrial hygiene education and training tool. It provides the straight and concrete evidence showing the relationship between the activities and the exposure levels. The ultimate goal of this study is to initiate the 'Safe Work, Zero Hazard' campaign, hoping to create a safer, healthier work environment for all the workers.