Non-Destructive Testing (NDT) Program

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What is NDT?

Non Destructive Testing (NDT) is the process of inspecting, testing, or evaluating materials, components, or assemblies for discontinuities or differences in characteristics without destroying the serviceability of the part or system. In other words, when the inspection or test is completed, the part can still be used.

In contrast to NDT, other tests are destructive in nature and are therefore done on a limited number of samples (“lot sampling”), rather than on materials, components, or assemblies actually being put into service.

These destructive tests are often used to determine the physical properties of materials such as impact resistance, ductility, yield and ultimate tensile strength, fracture toughness and fatigue strength, but discontinuities and differences in material characteristics are more effectively found by NDT.

Today, modern nondestructive tests are used in manufacturing, fabrication, and in-service inspections to ensure product integrity and reliability, to control manufacturing processes, lower production costs, and to maintain a uniform quality level. During construction, NDT is used to ensure the quality of materials and joining processes during the fabrication and erection phases, and in-service NDT inspections are used to ensure that the products in use continue to have the integrity necessary to ensure their usefulness and the safety of the public.

It should be noted that while the medical field uses many of the same processes, the term “nondestructive testing” is generally not used to describe medical applications (continue reading at ASNT (opens new window)).

Apprenticeship Program

SOWELA now offers a Non Destructive Testing (NDT) Apprenticeship Program. We are currently taking applications for our NDT class (opens new window). Stay tuned to this page for future apprenticeship opportunities with SOWELA.

Choose NDT

ASNT Presents: Choose NDT


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  • Course lasts 12 weeks
  • Need copy of High School Diploma or HiSET (GED)
  • Bring income verification, if possible (such as your last 30-day pay stub)
  • Credentials Earned: Visual Testing (VT), Liquid Penetrant (PT), Magnetic Particle (MT), Radiography (RT), and Ultrasonic Testing (UT).
  • A 40-hour Radiation Safety training to prepare students to take the State Radiation Certification Testing.
  • Students will also be introduced to Blueprint Reading and ISO Drawings during the training.

Cost of the Program: $3,500

For more information, contact the Office of Workforce Solutions at (337) 421-6560 or