Which of the following can be considered as evidence during the internal audit?

During an internal audit for a Quality Management System based on ISO 9001, all types of evidence are crucial in verifying the conformity of processes and procedures with established requirements. The options presented each serve as valuable evidence in different contexts.

The first option, guidelines for performing a specific process, provides documented evidence of the expected standard or method for operations. This aligns with the ISO 9001 requirement that processes are defined and documented, which is essential for ensuring consistent quality.

The second option indicates that the actual performance of the XYZ process adheres to the established procedure. This serves as direct evidence of compliance and effectiveness in applying the guidelines, demonstrating that the organization is not only documenting processes but also implementing them correctly.

The third option, which refers to a training log, plays a critical role in assessing whether personnel are adequately trained for their functions. Employee competency is a key requirement in ISO 9001, and maintaining training logs serves as evidence that employees possess the necessary skills and knowledge to perform their tasks effectively.

Thus, each piece of evidence supports compliance with various requirements of the ISO 9001 standard and shows the effectiveness of the QMS. The inclusion of all these items as evidence underscores the comprehensive approach needed during audits to evaluate the entire system thoroughly.