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Benedictus Rahardjo
Industrial Engineering Department, Petra Christian University
Industrial & Manufacturing Engineering

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Pengoptimalan Inventory Level dan Cost dengan Menerapkan Direct Delivery System dan Milk-run Study pada Pengiriman Barang di PT SEMB David Setiawan; Benedictus Rahardjo
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
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PT SEMB is a company that works in the production of electrical components related to energy management and automation. The problem that occurs is the order made in the present conditions is still not optimal, causing the inventory level to be high. The study was conducted to help the company to be able to reduce the inventory costs and transportation costs. Direct delivery is a system that helps to reduce the inventory level and cost to the cost of goods ordered. The simulation that has been done for direct system can provide savings of up to 50,000 USD. Savings obtained from this direct system if applied to all local suppliers will reduce the cost of 280,000 USD compared to the current conditions. In addition, milk-run studies are also used to material pick-up methods. This method can also reduce the transportation costs until 900 USD.
Upaya Meningkatkan Produk Kualitas Terbaik dengan Metode DMAIC di PT. X Jefani Nathanael Gunawan; Benedictus Rahardjo
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
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This research discusses efforts on how to increase X company best quality product using DMAIC. The company has a production target of 75% for the best quality ceramic tiles, though it was hard to achieve it since the production in 2019 was only 62%. There are eight lines within the production floor and data showed that the largest defect rate of 43.64% has occurred in line seven. By using Pareto chart, we can see which problem needed to be prior solved and it showed that there were twelve types of defects which then being analyzed using fishbone diagram and 5 whys to have a deep root cause analysis. Some comments have been proposed, one of them is related to the elimination of a dusty environment. By adding a dust collector and implement maintenance schedule, it could significantly result in lowering the impact of dust by 52% and engine damage by 46%.
Penerapan Toyota Business Practice (TBP) dalam Menurunkan Jumlah SPO Delay di PT TMMIN Yosafat Cahya; Benedictus Rahardjo
Jurnal Titra Vol 9, No 2 (2021): Jurnal Titra
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PT. Toyota Motor Manufacturing Indonesia (PTTMMIN) is one of the major companies in Indonesia engaged in the automotive sector. PT TMMIN acts as a manufacturer and also as an exporter of cars and Toyota components. One component exported by PT TMMIN is a sample part which the component used as a trial for new project in the other Toyota affiliation. Export documents from sample parts called Sample Part Order (SPO). During handling, there are some SPO delayed which will have an impact on the company's Key Performance Indicator (KPI) and the image of PT TMMIN in the global affiliate as an exporter. An analysis to solve problems use Toyota Business Practice (TBP) tools and problem tree diagram. The improvements are summary of SPO, renewal of new phase 1 workflows, and weekly progress. The improvements have a positive effect, which reduce days of delay from 15 days to 0 days in the part confirmation, exporter reply delay decreasing from 71% on November 2018 into 0% delay on May 2019, also reducing delay shipment by 25% from November 2018 to 17% on May 2019. Expectations from the design of new information systems are to re-reduce the number of delays from SPO and facilitate the SPO handling process which benefits to PT TMMIN.
Perbaikan Sistem Prototype Part Order pada Divisi PPMO di PT. TMMIN Bertinus Enrico Rahardjo; Benedictus Rahardjo
Jurnal Titra Vol 8, No 2 (2020): Jurnal Titra 8(2) Juli 2020
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Globalization cause business improve rapidly. PT Toyota Motor Manufacturing Indonesia (PT TMMIN) which is an automotive company also need to innovate and keep improving. Innovation needed a prototype before development part going live. Prototype part evaluation done at Toyota Daihatsu Engineering & Manufacturing (TDEM) in Thailand and TMC so PT TMMIN need to export part according to order given. Order is divided into two group which are special project and general project. Special project is project based on vehicle produced by PT TMMIN and general project is project based on general Toyota vehicle. One of system issue is no special budget number dedicated to TWX-21 System. Currently, TWX-21 System is using special project based budget so budget amount depends on ongoing special project. Thinking framework used is Toyota Business Practice (TBP). The purpose is to find out the reason for the lack of a dedicated budget number for the TWX-21 System. The improvements have a positive effect, which are a single dedicated budget created for TWX-21 System.
Co-Authors Bertinus Enrico Rahardjo Billy Danuharjo Gani David Setiawan David Suhendra Eliza Erlinda Hardwinto Rantung I Nyoman Sutapa Jefani Nathanael Gunawan Jonathan Edward Jonathan Kristiadi Srikuning Laurensius Christian Iswantoro Mellisa Yang Nathanael Andrew Hotma Robert Yunior Anthoni Yosafat Cahya