Measuring the productivity of start-stop processes can be difficult to do well using conventional approaches.
If you went out to the floor with a stopwatch and clip board, operator behaviors will change merely by knowing they are being observed. If you filmed the machine area with a video camera, you would have another set of issues to deal with. If you try to interpret machine downtime codes, even more issues arise.
Here I show how you can get great detailed answers quickly about how time is spent with nothing more than a pencil and an index card. Also covered are automated time-cycle measures, the stochastic nature of time cycles, SMED, scheduling and other related topics.