O.E.E. stands for ‘Overall Equipment Effectiveness’. It is a shop floor tool to measure how well manufacturing equipment is running when compared to theoretical goals. The O.E.E. is obtained by three ratios: 1. the availability ratio 2. the quality ratio, 3. the performance ratio.

One Piece Flow
In its purest form, it’s a continuous flow where items are processed and moved directly to the next process; one piece at a time.