Nondestructive Testing Questions and Answers

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Question #1: What are the different levels of NDT qualifications?

There are 6 different levels of qualifications per SNT-TC-1A and NAS 410.

Trainee-Trainees are individuals participating in an ndt training program. Trainees must obtain work experience under the direct supervision of a Level II, Level III or Instructor in the same method. Trainees cannot independently do testing.

Level I Limited-An individual who needs only to perform one specific NDT test on a specified part, feature or assembly should seek out Level I Limited certification. The congnizant engineering organization provides written practice and then considers case by case justification for using a Level-1 Limited to complete a task. Training hours, test questions and on the job experience can be adjusted to fit this one particular task. However this Level I limited can not perform the NDT test on any other item, other than what he was specifically trained to do.

Level I- First certifiable qualification level. Level I certifications can only be given for specific NDT technique or method. Level I technicians should have the skills and knowledge to perform specific tests, specific calibrations with written approval of the appropriate level III individual. This individual shall be able to follow procedures in the techniques for which certified while receiving guidance from a Level II or Level III.

Level II- Level II technicians are required to have the skill sets to set up and calibrate equipment, conduct test, and interpret, evaluate and document results in accordance to procedures approved by appropriate Level III. This person is familiar with the scope and limitations of the method in which he is certified. A Level II is capable of directing the work of trainees and Level I personnel. This person should be familiar with codes and standards and must be able to document NDT results.

Instructor- Instructors shall have the skills and knowledge to plan, organize and present classroom, laboratory, or on-the-job training. Course outlines have to be approved by a Level III. The instructor must be familiar with codes, standards and contractual documents that control the method.

Level III- Level III's shall have the skills to interpret codes, standards and other contractual documents that control the method. They are capable of selecting the methods used to complete an inspection in the technique they are certified. The level III should have general knowledge of all the NDT methods. This person must be capable of directing the training and examination of personnel in methods certified. This person may not conduct NDT acceptance on a part unless he has proven himself proficient in a practical examination.

Question#2: What is the Minimum Training Hours for each Method and Level?

According to SNT-TC-1A, training hours for Level I and II refer to the time that is spent covering basic principles, products, equipment, operating procedures and techniques. The training hours include a final exam that the individual must complete and pass before he or she gets credit for their training time.

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