NDT - Non-Destructive Testing NDT Certification and Practices Questions and Answers

Question 1

An NDT Level I technician performs an ultrasonic thickness test on a pipe following a detailed procedure. The technician obtains a reading that is significantly thinner than expected and is outside the normal range described in the instructions. According to ASNT's Recommended Practice No. SNT-TC-1A, what is the most appropriate action for the Level I technician to take?

Accepted Answer

Document the reading, report the finding to the supervising Level II or Level III technician, and ask for guidance.

Answer

According to SNT-TC-1A, a Level I technician is qualified to perform specific calibrations and tests under supervision and according to written instructions. They are responsible for recording results but should receive guidance and supervision from a certified NDT Level II or III individual for the evaluation of unexpected or complex results. A Level I does not typically have the authority to sentence a component or deviate from the procedure without guidance.

Question 2

An employer wishes to establish an in-house NDT personnel qualification and certification program compliant with ASNT's Recommended Practice No. SNT-TC-1A. Who holds the ultimate responsibility for creating and approving the company's 'Written Practice'?

Accepted Answer

The employer, who typically delegates the task to a qualified NDT Level III.

Answer

SNT-TC-1A clearly states that the certification of NDT personnel is the responsibility of the employer. The employer must establish a Written Practice, which is a formal document outlining the control and administration of NDT personnel training, examination, and certification. This Written Practice must be reviewed and approved by the employer's NDT Level III.

Question 3

Which of the following is a common near-vision acuity requirement for NDT personnel as specified by guidelines like ASNT SNT-TC-1A?

Accepted Answer

The ability to read Jaeger Number 2 type and size letters at a distance not less than 12 inches (30.5 cm).

Answer

ASNT's SNT-TC-1A recommends that NDT personnel have their near-vision acuity tested annually. A common standard is the capability to read Jaeger Number 2 or equivalent letters at a minimum distance of 12 inches (30.5 cm), with or without corrective lenses.

Question 4

An NDT Level II inspector is performing a magnetic particle inspection on a critical component and is pressured by the production supervisor to sign off on the part quickly to meet a shipping deadline. The inspector has not fully completed the evaluation as required by the written procedure. What is the most ethical course of action?

Accepted Answer

Politely refuse to sign off and insist on completing the full inspection as required by the procedure, explaining that safety and quality cannot be compromised.

Answer

The ASNT Code of Ethics requires members to perform their work in the highest professional manner, protecting public safety. An inspector's primary duty is to the integrity of the inspection and adherence to the specified procedures, not to production schedules. Compromising an inspection due to external pressure is a serious ethical violation that could lead to catastrophic failure.

Question 5

Within the context of an employer-based certification program such as one based on SNT-TC-1A, what is the fundamental difference between 'qualification' and 'certification'?

Accepted Answer

Qualification is the demonstration of skills, knowledge, and experience, while certification is the employer's written testimony confirming that qualification has been met.

Answer

In SNT-TC-1A, 'qualification' refers to the process where an individual demonstrates they have the required training, skills, and experience. 'Certification' is the act of the employer providing written testimony—a certificate—that the individual has successfully met the qualification requirements outlined in the company's Written Practice.

NDT - Non-Destructive Testing Practice Test

NDT - Non-Destructive Testing Practice Test

NDT - Non-Destructive Testing NDT Certification and Practices Questions and Answers