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KMID : 0895419980080020178
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Journal of Korean Society of Occupational and Enviromental Hygiene
1998 Volume.8 No. 2 p.178 ~ p.185
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Performance of Local Exhaust Ventilation Systems of Degreasing and Plating Workplaces
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Abstract
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In order to evaluate and improve the performance of local exhaust ventilation systems for two TCE degreasing (A, B) and two electroplating (C, E) and one acid dipping & plating (D) operations located in Kimhae, the performance test was conducted with trace gases and a thermal anemometer (Kanomax 24-6111, Japan). For the inadequately designed systems, the improvement and redesigns in compliance with recommendation by ACGIH was suggested. The results of performance test for each system are as follows;
1. System of Workplace A was generally well-designed. Actual exhaust air flow rate was in excess of 68% above the recommended standard exhaust air flow rate.
2. System of Workplace B was very well-designed and completely enclosed.
3. All systems of Workplace C including hoods were poorly-designed and actual exhaust air flow rates were insufficient for open tanks. All systems should be upgraded according to ACGIH recommendations.
4. Supply and exhaust air flow rate of push-pull exhaust systems in Workplace D should be greatly increased. The width of flange of dipping tank hood should be increased with the value suggested.
5. System of Workplace E was well-designed. Actual exhaust air flow rate was in excess of 54% above the required.
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