Productivity Measurement using Objective Matrix (Omax) Method and Efforts to Improve Ready Mix Concrete Industrial in Batching Plant
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Abstract
The productivity of batching plants in the ready-mix concrete industry plays a very important role. It aims to determine the extent of the level of efficiency, effectiveness, and inferential. Batching plant is an areato produce ready mix concrete which is then sent to the construction site using a truck mixer. Some of the problems that occur in the batching plant include the accuracy of the production plan that is not achieved and high overtime hours. This results in losses for the company. The purpose of this study is to measure productivity using the Objective Matrix (OMAX) method. The standard productivity index value in the OMAX method is 300, where this value is at the score level 3. After knowing the productivity index, then look for factors causing low productivity. For this stage, there are color indicators, namely green, yellow, and red. The red color is a factor causing low productivity. The final stage provides recommendations for improvement to increase productivity at the batching plant. During 2020, batching plant productivity experienced a significant decrease in June by -78.72% and the highest productivity index occurred in September at 183.33%. And it is known to increase productivity with a production of 14200 m3/month requires the use of electrical energy of 142.72 kWh, the accuracy of the production plan is 13484.97 M3, a workforce of 70 people, truck mixer 27 units, and overtime hours of 18.15 hours.In addition, it can also be done with real improvement efforts.
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