Reviewing processes

Answer:

By "reviewing" I assume you meant "monitoring". In order to determine whether the process is really delivering what you are expecting from it, you need to determine some Key Performance Indicators (KPIs). The frequency of monitoring and measuring of the KPIs will depend on the nature of the KPI and also on the risks related to the processes. For more information, see: How to define Key Performance Indicators for a QMS based on ISO 9001 https://advisera.com/9001academy/24/define-key-performance-indicators-qms-based-iso-9001/-iso-9001/

Also, if you want to ensure that the process is carried out as planned, you need to perform internal audits of the processes. The purpose of the internal audit is to determine whether the process is carried out in compliance with requirements of the standard and procedures you've defined. At minimu m, internal audit should be performed once a year, but for more complex processes or processes where nonconformity is more likely to occur, internal audits can be done more frequently.