For example, the core business processes will be audited either weekly/monthly/quarterly/bi-annually/annually and the supporting 9001 standard requirements procedures/processes will be audited once within the 3-year cycle because the risk of change is considered low.
Should the auditing of the standard requirements take place each year within a 3-year cycle?
The periodicity of internal audits is not regulated by the requirements of ISO 9001:2015.
Therefore, any audit cycle is acceptable. However, the frequency greater than 1 year may cause difficulties in conducting annual supervisory audits to prove that the QMS is maintained.
A good and most common practice is to audit every process once a year.
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