Analisa Waste dengan Pendekatan Lean Manufacturing pada UKM Nasa Karya Teknik Menggunakan Metode Value Stream Mapping (VSM)

Abstract

In essence, manufacturing companies utilize a diverse range of materials, which inevitably leads to excessive waste in the production process. One of which is the production of agricultural processing machines. One of these companies, UKM NASA Karya Teknik, located on Karya Wisata Streets, aims to meet the demand for agricultural processing machines. In response to the increasing demand for Chopper Shredder, the company has ramped the production up. However, the rising consumer demand for this machine has resulted in inefficiencies in the manufacturing process, particularly in the overexecution of activities and poor workplace allocation, leading to waiting times—instances where individuals are idle, waiting for processes handled by other operators. Therefore, this study was conducted to identify and eliminate non-value-added activities. The research employs a lean approach with the Value Stream Mapping method and is analyzed using the 5W+1H method. Data collection involves calculating the average time for each production activity description, processed using Process Activity Mapping tools to identify non-value-added activities. Process Activity Mapping in the current state reveals non-value-added activities, such as three inspection activities and one delay activity. The results of activity improvement show a 6% increase in the percentage of value-added activities, from 50% to 56%, and a reduction in processing time by 1,824.43 minutes, from 3,003.43 minutes to 1,179 minutes.