10.5 Internal audit
Internal audits are an effective tool for determining the levels of conformity of the organization’s management system to its selected criteria. They provide valuable information for understanding, analysing and improving the organization’s performance. Internal audits should assess the implementation, effectiveness and efficiency of the organization’s management systems. This can include auditing against more than one management system standard, as well as addressing specific requirements relating to interested parties, products, services, processes or specific issues.
To be effective, internal audits should be conducted in a consistent manner, by competent people, in accordance with the organization’s audit planning. Audits should be conducted by people who are not involved in the activity being examined, in order to give an independent view on what is being performed.
Internal auditing is an effective tool for identifying problems, nonconformities, risks and opportunities, as well as for monitoring progress on resolving previously identified problems and nonconformities. Internal auditing can also be focused on the identification of good practices and on improvement opportunities.
The outputs of internal audits provide a useful source of information for:
a) addressing problems, nonconformities and risks;
b) identifying opportunities;
c) promoting good practices within the organization;
d) increasing understanding of the interactions between processes.
Internal audit reporting usually contains information on conformity to the given criteria, nonconformities and improvement opportunities. Audit reporting is an essential input for management review. Top management should establish a process for reviewing all internal audit results, in order to identify trends that can require organization-wide corrective actions and opportunities for improvement.