Internal audits - retention & disposal policy

As long as there are no legal requirements, and as long as there are no customer requirements, for example on contracts, organizations are free to determine the retention time for their records.

Normally, in these cases, I advise keeping records for 3 or 4 years, to assure that records generated during a certification cycle will be available within that certification cycle.

The following material will provide you information about retaining records:

• New approach to document and record control in ISO 9001:2015 - https://advisera.com/9001academy/blog/2015/06/30/new-approach-to-document-and-record-control-in-iso-90012015/
• Free online training ISO 9001:2015 Foundations Course – https://advisera.com/training/iso-9001-foundations-course/
• Book - Discover ISO 9001:2015 Through Practical Examples - https://advisera.com/books/discover-iso-9001-2015-through-practical-examples/