Categories of Non-value adding steps
In-house failures: These are procedures involving rectification of errors or defects in a process. These usually begin with the word ‘re’. They are signs of in-house failures. For e.g. retest, recall etc.
Peripheral failures: These are procedures involving rectification of errors or defects pointed out by the customers.
Control/ inspection: These are procedures involving reviewing, checking, verifying, the previous or the value adding steps. They are considered as non-value adding steps.
Delays or hold up: These are the most common non value-adding step. These could be hold up in a process or waiting for delivery of the supplies.
Groundwork time: These are procedures, which set up the process for following activity.
Moves or shifts: It involves moving of the parts from one place to another to get them assembled, build, or moving the finished parts to the warehouse or stockroom for storage. It is a non value-adding step. There is also the possibility of damage to the finished product in this step.