Project x is an apartment development activities in Tangerang which in the process of construction resulted in the occurrence of noise. Noise is one of the incidents that can be lead to health problems for the surrounding community. Therefore, this research aims to know the spread of noise, the amount of noise reduction that can be reduced by using a hearing protective device and workers’ perceptions of noise against hearing loss. The method used is the contour zone. Data used is the result of noise measurement Project x in the daytime and nighttime conditions. The result obtained is the noise level in the project work area during the daytime in area 1, 2 and 3 with a distance of 2 meters are 97.1 dB, 94.4 dB, 93.9 dB, and length of 4 meters are 94.4 dB, 91.5 dB, 93.0 dB and night measurements at a distance of 2 meters are 102.2 dB, 100.1 dB, 96.5 dB, and length of 4 meters are 94.7 dB, 94.7 dB, 97.4 dB. The calculation of day and night above exceeds the noise threshold value set by the Ministry of Labor which is 85 dB. The perception of the worker with the noise disturbances that occur at The Yukata Project. Using hearing protection devices will reduce the noises, but at nighttime conditions in areas 1 and 2 at a distance of 4 meters, the noise level still exceeds the noise threshold value which has been determined by the ministry of labor.

PT. XYZ is an electrical machinery repair services company. The amount and density of operator activity can affect worker fatigue. This research conducted to calculate the level of physiological and psychological workloads and ideals rest periods for operators in the Mechanical Department of PT. XYZ. The method to calculate physiological workload is direct measurement by measuring heartbeat, whereas the method to calculate psychological workload is NASA-TLX Method. The results show that the most severe physiological workload experienced by Mr. Nur who is a medium-sized lathe operator with a value of energy consumption of 8.497 Kcal/minute before a break and 7.602 Kcal/minute after a break, the ideal rest time for Mr. Nur is 112 minutes with work duration from 07.00-12.00 WIB and 66 minutes with work duration from 13.00-16.00 WIB, while Mr. Supardi and Mr. Didik requires a rest time of 103 minutes and 38 minutes with work duration from 07.00-12.00 WIB and the level of psychological workload for the 12 operators are high and very high. Therefore the company can minimize the level of physiological and psychological workload by calculating the workload of the operator in a balanced manner.

PT. XYZ is a manufacturing company that produces medical devices. The company has planned to develop a new product called Medical Pharmaceutical Refrigerator (MPR). Based on research, the company has provided an area for MPR production of 648 m2. After analyzing the process, 5 areas are used in conjunction with other products, but one area called Polyurethane Injection produces a product flow mismatch in the PU area. This problem is solved by designing a layout using the Industrial Facilities method and Systematic layout planning with the Product layout approach. Based on the results of the study, proposed two alternative layouts which then analyzed the weight of material transfer using the From-to-chart method. Layout design 1 has a weight transfer material of 9322.09 per day, while the proposed layout design 1 produces a weight transfer material of 5750.5 per day. So, the MPR production layout is determined using the layout design 2. By determining this layout, a biomedical warehouse area was moved at of 49.42 m2.