Overall Equipment Effectiveness (OEE) is widely use as the measure of success of TPM implementation. Overall
Equipment Effectiveness is given as: Availability × Performance Efficiency × Quality Rate (OEE = A × PE × QR)[1].
Availability takes into account the losses due to equipment failure and setup and adjustment and is calculated as the ratio of
operating time to loading time. Performance Efficiency includes losses due idling and minor stoppages and speed loss and is
calculated as ratio of net operating time to operating time. Quality rate factors the defects in process and reduced yield and
is defined as ratio of valuable operating time to net operating time. Table 5 gives the summary of observation made before
and after TPM implementation.