9001 Auditor's competency

Has any requirements for the auditor for conducting an internal audit and how to ensure the auditor conduction audit is competent? 

Answer:

Each organization has the authority to determine the competence requirements of its internal auditors. Normally, organizations consider that internal auditors should have knowledge of the audit criteria (ISO 9001:2015 in this case) and should have training in internal audits. You can even decide that an auditor has to study a book on audits or attend an online course and do an in-house exam. Internal auditor competence requirements can be established in a job description, for example. Audit competence or audit effectiveness can be measured, for example by comparing internal audit results with external audit results.

Is it any requirements for attending internal audit training and getting certificates? 
If have please give a reference on İSO 19011. 

Answer:

No, there is no formal requirements for choosing people to attend internal audit training. Anyone can be internal auditor, unless psychologically they do not want to do it.

The following material will provide you information about internal auditors:

• 13 Steps for ISO 9001 Internal Auditing using ISO 19011 - https://advisera.com/9001academy/knowledgebase/13-steps-for-iso-9001-internal-auditing-using-iso-19011/
• How to perform an internal audit using ISO 19011 - https://info.advisera.com/free-download/how-to-perform-an-internal-audit-using-iso-19011
• 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/