EVALUASI STRATEGI PERAWATAN PERALATAN HIDROLIK UNTUK MENURUNKAN BIAYA PEMAKAIAN PELUMAS DI HOT STRIP MILL PT KS

• Main Author: SUWARTO (NIM : 29110441); Thesis Counsellor: Dr. Ir. Gatot Yudoko, AGUS
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17837
• Institution: Institut Teknologi Bandung

ABSTRACT <br /> <br /> <br /> <br /> <br /> Currently, every company should do efficiency to reduce the production cost in Maintenance activity cost is the one of management concern to reduce without sacrificing the reliability of equipment and machine performance. The average lubricant usage cost in Hot Strip Mill PT. Krakatau Steel is Rp 1.149.464.558,- permonth or total Rp 13.793.574.699,- for year 2011, and this is a serious problem because it tends to increase every year. <br /> <br /> <br /> <br /> <br /> There are many kinds of lubricants (oil and grease) which is used in Hot Strip Mill PT. Krakatau Steel as bearing lubrication system, gear lubrication system and as fluid media in hydraulic system to move the equipment with heavy load. To reduce the lubricant cost is by doing identification of hydraulic equipment which is using the biggest of oil consumption cost for Rp 3.287.476.000,- per-year. Because there are some hydraulic system in Hot Strip Mill, therefore the research is focusing on hydraulic system in Finishing Mill area which is the biggest contributor on oil consumption by 825.691.647,- per-year.. <br /> <br /> <br /> <br /> <br /> The main cause of high oil consumption cost is leakage on hydraulic hose and hydraulic cylinder seal because there is no periodically replacement schedule. Therefore, it is suggested to implement the maintenance strategy both for preventive and predictive maintenance strategy based on equipment criticality factor or impact will occur when equipment failure such as: workforce safety, production downtime, product quality, equipment duty of operation and the inspection possibilities during <br /> <br /> <br /> equipment running. By implementing an appropriate maintenance strategy, the company will get cost saving Rp 87.838.138,- per-year or 10,6 % from oil <br /> <br /> <br /> consumption cost.. <br /> <br /> <br /> <br /> <br /> To implement preventive and predictive maintenance strategy can be started by creating new job ticket and editing the existing job ticket complete with spare part needed, budget and required man power. All data will be entered to the company integrated information system SAP. The execution of the maintenance job will be effective if all required thing is available. Regularly evaluation of maintenance activity should be conducted as a feedback to get the right maintenance strategy with <br /> <br /> <br /> optimum cost to increase company competitiveness. <br /> <br /> <br /> <br /> <br /> Key words: lubricant usage cost, preventive and predictive maintenance strategy, increase company competitiveness.