Practice Test GeeksNDT - Non-Destructive Testing Practice Test
← All NDT Flashcard Decks

Radiographic Testing Safety 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 Radiographic Testing Safety flashcards as text

  1. A film badge (OSL dosimeter) is worn during radiographic testing primarily to:

    Answer: Measure and record cumulative radiation exposure

    Film badges and OSL dosimeters are passive, legal-record dosimeters that accumulate and record total dose for regulatory compliance.

  2. What color is typically used on radiographic exclusion zone barrier ropes or tape to signal a radiation hazard?

    Answer: Yellow and magenta (or purple)

    Yellow and magenta (or purple) are the internationally recognized colors for radiation warning signs and barriers per ANSI/ISO standards.

  3. When transporting an Ir-192 camera, which DOT packaging category is most commonly required for a fully loaded industrial radiography camera?

    Answer: Type B Package

    The radioactivity levels in a loaded Ir-192 camera typically exceed Type A limits, requiring a DOT-certified Type B package for transport.

  4. A pocket dosimeter reads zero at the start of a shift but reads 2 mSv at the end, while the film badge shows only 0.1 mSv. The radiographer should:

    Answer: Report both readings and investigate the discrepancy

    Discrepancies between dosimeters must be investigated and reported to the RSO, as they may indicate dosimeter malfunction or an unreported exposure.

  5. A 'restricted area' in radiographic testing is defined as an area where dose could exceed:

    Answer: 0.05 mSv (5 mrem) in any one hour

    Per 10 CFR Part 20, a restricted area is any area where an individual could receive a dose in excess of 0.05 mSv (5 mrem) in any one hour.

  6. Which isotope has the longest half-life among those commonly used in industrial radiography?

    Answer: Cobalt-60 (Co-60)

    Cobalt-60 has a half-life of approximately 5.27 years, significantly longer than Ir-192 (74 days), Se-75 (120 days), or Tm-170 (129 days).

  7. If a source becomes stuck in the 'exposed' position during a field radiograph, the FIRST action a radiographer must take is:

    Answer: Evacuate the immediate area and establish an exclusion zone

    Life safety takes precedence: personnel must immediately evacuate and establish an exclusion zone before any other response actions are taken.