The purposes of this study is identify job characteristics of industrial bakery workers, measure exposure level of flour dust and provide background information to measure flour dust that workers engaged in bakery are exposed and had better their occu...
The purposes of this study is identify job characteristics of industrial bakery workers, measure exposure level of flour dust and provide background information to measure flour dust that workers engaged in bakery are exposed and had better their occupational environment.One semiautomated industrial bakery and one automated industrial bakery were selected for this study. Subject of 107 workers in four processes (weighing, mixing, partition, fixing) of two bakery were selected. The 31 personal inhalable flour dust samples using the Institute of Occupational Medicine(IOM) inhalable dust samplers with PVC filters and 76 personal total flour dust samples used as prescribed in NIOSH method number 500.The concentration of inhalable flour dust was higher in semiautomated industrial bakery workers (4.39±2.29 ㎎/㎥) than automated industrial bakery workers (2.38±2.01 ㎎/㎥)(p<0.05). Inhalable flour dust exposure was highest at weighing process, then followed by mixing process, fixing process, partition process(p<0.05). Total flour dust exposure was highest at weighing process, then followed by mixing process, fixing process, partition process(p<0.05). As results of flour dust measurement, total dust exposure levels are less than 10 ㎎/㎥(total dust exposure level), but 96.8% (30/31 samples) of inhalable flour dust samples exceed TLV-TWA 0.5 ㎎/㎥(ACGIH).It would be advisable to use the IOM sampler for the collection of inhalable flour dust and conform to apply the TLV-TWA for inhalable flour dust(ACGIH). Because level of flour dust exposure in Korea industrial bakery is as high as to induce respiratory difficulty, lung function reduction, occupational asthma, appropriate local exhaust ventilation system, improvement of process and facilities, and personnel protective equipment are needed.