Verifying corrective action implementation

Yes, both in internal and surveillance audits, auditors can verify that agreed corrective actions have been implemented and are effective. Actually, I consider that to be the best approach, close in an audit scenario what was opened in a audit scenario.

The following material will provide you information about internal auditors:

• ISO 9001 – ISO 9001 internal auditor training: Is it for me? - https://advisera.com/9001academy/blog/2015/06/02/iso-9001-internal-auditor-training-is-it-for-me/
• Free online training ISO 9001:2015 Internal Auditor Course – https://advisera.com/training/iso-9001-internal-auditor-course/
• Book -  ISO Internal Audit: A Plain English Guide - https://advisera.com/books/iso-internal-audit-plain-english-guide/