NDE Coordination: Sequencing, Documentation, and Interfaces
What the candidate must understand
NDE coordination means planning examinations so they occur at the right time, with the right method, by qualified personnel, and with results properly recorded. Candidates must understand method selection by defect type and location (surface versus volumetric), the timing of examination relative to welding and heat treatment, and the interface between the welding coordinator and NDE personnel. Know the qualification and certification requirements for NDE personnel, the role of written procedures, and the reporting chain when indications are found. Understand how hold points and witness points function in an inspection plan.
Traps in questions
A common trap is scheduling volumetric examination before postweld heat treatment when the code requires it after. Another is assigning a surface method to detect internal defects. Watch for questions about who may interpret indications and whether verbal results suffice; documented reports are required. Also expect confusion between hold points and witness points.
Worked example / rule of thumb
Rule of thumb: match the method to the defect, and the timing to the process. Worked example: a stem describes a thick complete joint penetration groove weld requiring internal examination. The correct method is volumetric (radiographic or ultrasonic), performed by qualified personnel per a written procedure, with results documented. Visual or penetrant testing alone cannot satisfy the internal examination requirement.
Study approach
Draft a simple inspection plan with hold points and map each weld type to a method. Review personnel certification requirements and reporting expectations.