粉塵危害分級測試方法之研究

Quick Hazard Classification of Dusts

袁妙儀(Miao-I Yuan)

指導教授 ： 何三平

長榮大學/健康科學學院/職業安全與衛生學系(所)/碩士(2017年)

摘要

近年來台灣科技發展蓬勃，隨著生產產品之精細化，所使用到的原物料也更多元，且八仙樂園粉塵閃火後，造成嚴重之後果，使我國各塑膠工廠開始檢視其廠內是否存有粉塵危害可能導致粉塵爆炸，但因工廠使用之粉塵眾多，若要一一進行最小著火能量(MIE)實驗，需花費大量時間與金錢，故本研究將最小著火能量(MIE)實驗結果進行歸納，得出單一濃度測試之粉塵快速危害分級方法與標準。並且協助工廠測試268 支粉塵，進行粉塵危害分級，其中高危害性粉塵數量並不多，高風險層級的第一、二級粉塵只占總粉塵的10 %，因此發現以此方式能將危害粉塵迅速分類出來，便能有效降低工廠執行粉塵防護之難度，而本研究更進一步探討，將不同著火能量粉塵混合後對於MIE之影響，發現當第一級粉塵混合第四級粉塵時，惰性粉塵之密度將影響惰化效果，此研究結果能做為工廠執行安全防護之依據。

關鍵字

最小著火能量 ； 粉塵爆炸 ； 粉塵惰化 ； 哈特曼管 ； 混合粉塵

並列摘要

In recent years, the high-tech industry in Taiwan has grown immensely, the diversity of raw materials has increased with the production of finer products. After the dust flash fire at Formosa Fun Park, which resulted in severe consequences, plastic processing plants began reviewing the hazard possibilities within their perimeters. However, the number of dusts used in plants is astounding, large amounts of time and money would be required in order for Minimum Ignition Energy (MIE) tests to be conducted, therefore this research generalized MIE experiment results and obtained a single suitable testing concentration for dust hazard classification. This research aided a factory in testing 268 dust samples and performed hazard classification. The number of highly hazard dusts was low, with Level 1 and 2 dusts constituting only about 10%, therefore this method can quickly separate dusts of different hazard levels and lower the difficulty for plants to perform dust protection. This research also studied the effect of MIE after mixing dusts of different hazard levels. It was discovered during the mixture of Level 1 and 4 dusts, higher dust densities of inert dust yielded better inerting effects, and the results could act as a basis for protection in processing plants.

並列關鍵字

Minimum Ignition Energy ； Dust explosion ； Dust inerting ； Hartmann tube ； Dust mixture

參考文獻

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