PCN Terminology

PCN/GEN states:

NDT Instruction - A written description of the precise steps to be followed in testing to an established standard, code, specification or NDT procedure.

NDT Technique - A specific way of utilising an NDT method (for example, ultrasonic immersion technique).

NDT Procedure - Written description of all essential parameters and precautions to be applied when non-destructively testing products in accordance with standard(s), code(s) or specification(s). An NDT Procedure can involve the application of more than one NDT Method or Technique.

NDT Method - Discipline applying a physical principle in Non-Destructive Testing (for example, Ultrasonic Testing).