TPM as defined by [2] is ``productive maintenance involving
total participation''. The goal of TPM is to enhance
equipment effectiveness and maximise equipment output. It
strives to attain and maintain optimal equipment conditions
in order to prevent unexpected breakdowns, speed losses,
and quality defects in process. Overall efficiency, including
economic efficiency, is achieved by operating at optimal
conditions through the life of equipment, i.e., by minimising
life cycle cost (LCC). A complete definition of TPM
includes the following five activities: