Abstract
This study investigates noise level at the grinding station in a sugar factory by measuring sound pressure level. This study aims to obtain noise level map, so that operators’ work hour can be regulated accordingly. Noise level is measured for four days using sound level meter. Observation is conducted at 9 points at 09.00, 11.00, 13.00, and 15.00 o’clock. The number of point of measurement is determined using contour mapping technique using grid size of 3m x 3m. Noise distribution pattern is obtained from surfer software v11.0. The results show that Daily Noise Dose (DND) exceeds the standard set by Occupational Safety and Health (OSHA). Every point of measurement has different noise level, which means that the maximum exposure duration allowed is also different. Maximum exposure duration allowed for the 9 points is ranging from 72.48 minutes to 143.54 minutes. This infers that the problem can be solved by work hour regulation of operators at each station; operators work for a different period of time at different stations.
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