Hi, I have always considered the following to satisfy the 8.2.2 Internal Audit requirements. These have been acceptable to our external auditors.
8.2.2.1 Quality Management System Audit
These are the internal audits of the entire quality system which are similar to which your registrar auditors do.
8.2.2.2 Manufacturing Process Audits
These are the audits on your individual manufacturing processes. If you look at Section 3.0, Terms and Definitions, Manufacturing is described as the process of making or fabrication. So a detailed audit of a particular manufacturing process (e.g assembly stage) taking into account the control plan.
8.2.2.3 Product Audits
These are looking at auditing the 'Product' at particular points of the production. Does it meet the specifications required. So this might be similar to an 'Out of Box' audit at the end of production.
Remember to satisfy the requirements of 8.2.2.4 these must be covered across all shifts. And yes, they must follow the 'Process Approach'
Hope this helps
