ABSTRACT PTPN V Sei Galuh is a state-owned company engaged in the plantation and processing of oil palm which produces crude oil and kernels from palm oil, PTPN V Sei Galuh was established on March 11, 1996. Ripple mill is a tool used in palm oil mills for core processing which functions to break the nut so that the core is detached from the shell. The purpose of this study is to identify and …