Value added, non value added and necessary non value added time comparison before
and after improvements
As can be seen on the figure, value added time are not changed. That’s proved that
value added processes cannot be eliminates because of their contribution to finished the
operations is significant. For necessary non value added, it recognizes the reducing of
9.85 hours which is from 16.23 hours become 6.38 hours while for non value added
reduced 2.0 which is from 3.5 hours become 1.5 hours. These results show that kaizen
steps also useful to eliminate or at least reducing the operations which do not add value.