The way I look at it is I do not blame the operator if the defect was caused by something that was not considered in the system. But, if the system specified that the operator is responsible for a task, the training has been done, and the operator does not perform that task, then you have operator error.
Now, as far as corrective action, you may find the risk or frequency of that error may justify a change in the system to further limit operator dependency. But a100% operator independent process just means machines will cause the problem or the people responsible for determining and performing the PM will be the next problem. A 100% operator independent process also means less employment (even lights out plants a few folks hanging around). But, that is an argument for the social responsibility standards people to address.
Now, as far as corrective action, you may find the risk or frequency of that error may justify a change in the system to further limit operator dependency. But a100% operator independent process just means machines will cause the problem or the people responsible for determining and performing the PM will be the next problem. A 100% operator independent process also means less employment (even lights out plants a few folks hanging around). But, that is an argument for the social responsibility standards people to address.