A
I agree with Jim, planned follow-ups, although I would not leave it 30days. I believe that the longer the NC is left the less likely it is to get closed. I do weekly follow-ups after internal audits until all NCs and CAs are complete. Monthly reports aways copied to the General Manager with length of time that NCs have been open. You can put a metric on length of time to closure of NCs and CAs to monitor improvement of the Quality System. Also I have been known to resort to public humiliation of the offending departmental Manager in front of his superiors, if he is not doing his job then they are not doing theirs. If you do not bring it to their attention then you are not doing yours.
Good luck,
Good luck,