Practice Test Geeks(NDT) Boilermaker Nondestructive Testing Certification Practice Test
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Nondestructive Testing Methods & Techniques Flashcards

7 cards from real NDT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Nondestructive Testing Methods & Techniques flashcards as text

  1. What is the function of the 'developer' step in liquid penetrant testing?

    Answer: To draw entrapped penetrant out of discontinuities and create a visible indication

    Developer acts as a blotter that draws trapped penetrant out of discontinuities by capillary action, spreading it to form a visible indication against the developer background.

  2. Which ASME code section specifically governs the nondestructive examination requirements for pressure vessels?

    Answer: ASME Section V — Nondestructive Examination

    ASME Section V provides the methods, procedures, and requirements for NDE techniques used in pressure vessel and boiler inspection programs.

  3. A boilermaker inspector finds a linear indication on a weld radiograph that is parallel to the weld axis and located at the weld centerline. This is most likely indicative of:

    Answer: Centerline cracking or lack of fusion along the weld root

    A linear indication parallel to and centered on the weld axis suggests centerline hot cracking or incomplete fusion along the root, both critical planar defects.

  4. In ultrasonic testing, 'attenuation' refers to:

    Answer: The loss of sound energy as the beam travels through the material due to absorption and scattering

    Attenuation is the progressive reduction of ultrasonic energy as the beam travels through material, caused by absorption (heat conversion) and scattering at grain boundaries.

  5. What is the primary advantage of phased array ultrasonic testing (PAUT) over conventional single-element UT in weld inspection?

    Answer: PAUT can electronically steer and focus the beam without moving the probe, improving coverage and speed

    Phased array systems use multiple elements fired at controlled time delays to steer and focus the ultrasonic beam electronically, enabling rapid volumetric weld inspection without mechanical scanning.

  6. Which of the following conditions would render a magnetic particle test invalid on a boiler component?

    Answer: Testing a component with a non-ferromagnetic weld overlay

    Magnetic particle testing is only effective on ferromagnetic materials; a non-ferromagnetic overlay (such as austenitic stainless steel) cannot be magnetized, making MT invalid for that surface layer.

  7. When evaluating a radiographic film, the 'IQI sensitivity' is considered acceptable when:

    Answer: The required wire or hole of the designated IQI is visible on the film

    Radiographic sensitivity is verified by confirming that the essential wire (wire-type IQI) or the required hole (hole-type IQI) is visible on the processed film, demonstrating adequate contrast and definition.