NDT Levels I, II, III


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Following are the minimum requirements for an individual to acquire a NDT Level II Certification in a specific method as per ASNT  SNT-TC-1A, 2020 All requirements have to be met.

  1. NDT Training with required hours. The training  shall be organized and include sufficient examinations to ensure understanding of necessary information (Section 7.0 of ASNT SNT-TC-1A)
  2. NDT Examinations conducted as per employer’s written practice – General, Specific and Practical with minimum number of questions. (see Section 8.0 of ASNT SNT-TC-1A)
  3. Experience hours as per ASNT SNT-TC-1A – to be verified by Employer.
  4. Annual Eye Examinations (near vision and color contrast) performed annually (see Section 8.2 of ASNT SNT-TC-1A) .

Table 1. Training and Experience Requirements to be a NDT Level  II as per SNT-TC-1A 2020. Example – To be a MT Level II, an individual must have 20 hours of class room training, 280 hours of MT experience and 530 hours of total NDT experience

Training 12 hours 20 hours 24 hours 80 hours
Experience-Method 210 hours 280 hours 210 hours 840 hours
Experience – Total NDT 400 hours 530 hours 400 hours 1600 hours

NOTES: 1. Certification of all levels of NDT is the responsibility of the employer (9.1 of SNT-TC-1A). 2. Requirements for Phased array UT, TOFD, Computed RT, Digital RT certifications are listed in table 6.3.1 A of SNT-TC-1A 3. Requirements for Level II Limited certifications for UT thickness and RT film interpretation are listed in table 6.3.1 B of SNT-TC-1A


Level I: Qualified to perform specific calibrations, specific NDT, specific evaluations, and record results. Should receive specific instruction or supervision from a NDT Level II or III.

Level II: Qualified to set up and calibrate equipment and interpret and evaluate results as per applicable codes, standards and specifications. Should be familiar with technique limitations. Organize and report the results. Should exercise assigned responsibility for on-the-job training and guidance of trainees and Level I personnel.

Level III: Qualified to develop, qualify and approve procedures, establish techniques, interpreting codes and standards. Should have sufficient practical background in applicable materials, fabrication and product technology. Should be capable of training and examining Level I and II personnel.

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