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    APPLICATION OF VALUE STREAM MAPPING WITH MODULAR ARRANGEMENT OF PREDETERMINED TIME STANDARDS TO REDUCE LEAD TIME: A CASE STUDY IN THE METAL SECTOR
    (2024-01) Korkmaz, Ömer Abdulaziz
    Just as producing is necessary for people, production efficiency has become an obligation for companies’ sustainability today. Making production better is a never-ending process. Feedback from the system plays a key role. Productivity development is the primary matter preoccupying all factory supervisors. All feedbacks start from improving production area leading to capacity increase, deadline decrease, and profit growth. In the production environment, numerous challenges exist; the primary concern is the ability to discern and recognize these problems. Most production obstacle stations are hidden, so their solutions begin with learning to see them. This thesis works on a real-life case study that deals with unobserved production area problems using Lean Manufacturing techniques. It presents a new model that combines Value Stream Mapping (VSM) and Modular Arrangement of Predetermined Time Standards (MODAPTS), to bring their complementary strengths together. Much wasted time was noted during the production process. VSM was used to identify the current state by revealing obstacles, and MODAPTS was responsible for time standardization to generate the future state jointly. This study improved lead time by 47% when production time decreased from 36 days to 19 days only. This paper targets proving this combination's value and being a foundation stone on which considerable future research will be built on it.