Process Improvement of Raw Materials Storage with Industrial Engineering Techniques

Abstract

This research aimed to improve the process of raw materials storage at the case study company consisted of recording raw materials receive, storing raw materials into a warehouse, raw materials disbursement, raw materials return, showing status of list and quantity of remaining raw materials. Due to no operation standards of raw materials storage process, the company had faced with the loss time problem at the production division particularly in, time to find raw materials in the warehouse, 450 minutes/month. This research used techniques of why-why analysis and 3 GEN (Genba, Genbutsu, Genjitsu) to find the root causes of the problems. The 5S activities; clearing up (Seiri) was applied to resolve the problems and the integration of visual control technique and organizing (Seiton) activities were also used to improve work process. The Inventor program was then employed to design and calculate weight loading of raw material shelves and the Microsoft excel program was used to construct a system to record of raw materials receiving, disbursement and return. As a result of having a training course for employees, the time to find raw materials was decreased from 450 minutes/month to 71.26 minutes/month, accounted for 84.16%. Furthermore, the warehouse capacity was also enhanced from 18.06 cubic meter to 25.82 cubic meter, equals to 42.97% increase.