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This document discusses a 43-page lecture on total preventive maintenance by Koichi Kimura. It begins by introducing tribology, the study of friction, lubrication and wear, and emphasizes the importance of lubricant control for machine maintenance. It notes that over 25% of machine failures are caused by lubrication problems. The document then discusses the COVID-19 pandemic and its major social and economic impacts. Finally, it provides a case study of providing suggestions to improve maintenance practices at a company through implementing 5S and generating ideas for small improvements.










































