For inquiries regarding any of our standards and recommended practices, fill out the standards inquiry form and submit it to standards@asnt.org.
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ASNT Standards: Elevating NDT Personnel
Setting global benchmarks for nondestructive testing excellence and professionalism.
At ASNT, we are committed to establishing and upholding the highest standards for the qualification and certification of nondestructive testing (NDT) personnel. Our standards and recommended practices serve as the foundation of excellence, guiding the NDT community toward unmatched expertise and professionalism.
Developed by expert ASNT committees, these standards define the qualifications required for NDT personnel to meet the rigorous demands of industries and governments worldwide. By adhering to these standards, NDT professionals enhance their careers while ensuring the reliability and safety of the industries they serve.
View All ASNT StandardsAdvisory: SNT-TC-1A Certification Practices
ASNT has issued guidance clarifying compliance requirements for employer-based certification under SNT-TC-1A.
Standard Oversight Bodies
To learn more about our standards' development and their impact on NDT personnel and industries, explore our Standards Council and ANSI/ISO Technical Advisory Group (TAG).
Current Editions
ANSI/ASNT CP-105: ASNT Standard Topical Outlines for Qualification of Nondestructive Testing Personnel (2024)
Defines the body of knowledge used to train, qualify, and certify NDT personnel across methods. Supports roles involved in performing, specifying, supervising, or evaluating NDT work, and helps ensure training aligns with consistent, recognized technical expectations.
ANSI/ASNT CP-189: ASNT Standard for Qualification and Certification of Nondestructive Testing Personnel (2024)
Establishes minimum requirements for employer-based NDT personnel certification, building on SNT-TC-1A. Covers certification of Level I, Level II, and Level III personnel, including instructor requirements and expectations for examination, vision, and image interpretation practices.
ANSI/ASNT CP-9712: ASNT Standard for Qualification and Certification of NDT Personnel (2023)
The US adoption of ISO 9712:2021, providing an American National Standard for the qualification and certification of NDT personnel aligned with international guidelines.
ANSI/ASNT ILI-PQ: In-line Inspection Personnel Qualification and Certification (2023)
Sets minimum requirements for employer-based qualification and certification of in-line inspection personnel for pipeline systems. Covers Levels I, II, and III and emphasizes technical principles, operations, and alignment with applicable regulations and industry standards.
ASNT Recommended Practice No. SNT-TC-1A (2024), with Addendum
Employer guidance for in-house NDT personnel qualification and certification programs, outlining recommended education, training, and experience by method. Helps support consistent, defensible employer-based certification.
Advisory: SNT-TC-1A Certification Practices
ASNT has issued guidance on the proper use of SNT-TC-1A and ASNT branding by training organizations and NDT Level IIIs.
Standards Updates
ASNT ILI-PQ Standard Public Review
ASNT has revised its In-line Inspection Personnel Qualification and Certification (ILI-PQ) standard, which sets minimum requirements for qualifying and certifying in-line inspection personnel working on pipeline systems. The standard is open for public review and comment through 17 August, 2026.
ASNT Standard on AI/ML in NDT/E Update
ASNT invited public comment on its proposed standard Use of AI/ML for NDT/E Applications, which sets minimum requirements for developing, validating, deploying, and maintaining AI/ML in the NDT/E field. The review period is closed, and submitted comments are under consideration.





