Avoiding nonconformities

Answer:
The best way to avoid nonconformities is performing demanding internal audits and preparing auditees to be open and cooperative during those internal audits. Give them training and make them partners in improving the quality management system.
Remember having minor nonconformities in the certification audit is not an obstacle to getting certification.

The following material will provide you information about internal audits:
- ISO 9001 – Five Main Steps in ISO 9001 Internal Audit - https://advisera.com/9001academy/knowledgebase/five-main-steps-in-iso-9001-internal-audit/
- ISO 9001 – How to prepare for an internal audit - https://advisera.com/9001academy/blog/2017/09/26/iso-9001-how-to-prepare-for-an-internal-audit/
- 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/
- Free webinar – How to perform an ISO 9001:2015 internal audit - https://advisera.com/9001academy/webinar/how-to-perform-an-iso-9001-2015-internal-audit-free-webinar-on-demand/
- book – Preparing for ISO Certification Audit: A Plain English Guide - https://advisera.com/books/preparing-for-iso-certification-audit-plain-english-guide/