Technological Innovation

What is ISO 9712:2021?


ISO 9712 is an international standard that specifies the requirements for non-destructive testing (NDT) personnel certification. It provides guidelines and procedures to ensure consistent and reliable NDT practices across different industries. The latest edition of this standard, ISO 9712:2021, was published on January 15, 2021. In this article, we will explore the key aspects of ISO 9712:2021 and its significance in the field of non-destructive testing.

Scope of ISO 9712:2021

ISO 9712:2021 covers the certification of NDT personnel involved in various methods such as visual inspection, liquid penetrant testing, magnetic particle testing, ultrasonic testing, radiographic testing, and eddy current testing. The standard defines the responsibilities and requirements for training, examination, and certification bodies, as well as for the NDT personnel seeking certification.

The scope of ISO 9712:2021 encompasses the entire certification process, including eligibility criteria for individuals, training and examination procedures, and the recertification process. It ensures that NDT personnel possess the necessary skills, knowledge, and experience to perform their duties competently and consistently.

Key Changes in ISO 9712:2021

ISO 9712:2021 introduces several notable changes compared to the previous edition. One significant update is the inclusion of additional training and examination requirements for specialized NDT techniques, such as phased array ultrasonic testing and time-of-flight diffraction.

The new edition also emphasizes the importance of ethical behavior and integrity in NDT personnel. It highlights the need for practitioners to adhere to a code of conduct and maintain confidentiality regarding sensitive information obtained during inspections.

Furthermore, ISO 9712:2021 introduces a revised scheme for the certification period. The standard now requires individuals to undergo regular reassessment, including practical demonstration of their NDT skills, to ensure continued competency and proficiency.


ISO 9712:2021 plays a crucial role in maintaining the quality and reliability of non-destructive testing operations worldwide. By providing a standardized framework for personnel certification, it ensures that NDT practitioners possess the necessary expertise to carry out their tasks effectively. The latest edition of ISO 9712 incorporates updates and new requirements to enhance the competence, ethical conduct, and ongoing assessment of certified NDT personnel. Adherence to this standard is essential for organizations and individuals involved in non-destructive testing to ensure industry best practices and safety standards are upheld.



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