Practice Test Geeks(API 510) Certified Pressure Vessel Inspector Practice Test
← All API 510 Flashcard Decks

Material Evaluation and Selection Flashcards

6 cards from real API 510 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Material Evaluation and Selection flashcards as text

  1. Why is material identification important for pressure vessel inspection?

    Answer: To verify the correct material was used and ensure compatibility with service conditions

    Material identification verifies that construction materials meet specifications and are compatible with the operating environment and contained media.

  2. What is positive material identification (PMI)?

    Answer: Field testing to verify the chemical composition of installed materials

    PMI uses portable analyzers to verify the actual chemical composition of materials, ensuring they match specifications.

  3. Which material property is most critical for pressure vessel service at elevated temperatures?

    Answer: Creep resistance and elevated temperature strength

    At elevated temperatures, materials must resist creep deformation and maintain sufficient strength to safely contain pressure.

  4. What is hydrogen-induced cracking and why is it a concern for pressure vessels?

    Answer: Hydrogen atoms diffuse into steel, causing embrittlement and cracking under stress

    Hydrogen atoms can diffuse into steel at high temperatures and pressures, causing embrittlement and cracking that can lead to catastrophic failure.

  5. What is the purpose of hardness testing during pressure vessel inspection?

    Answer: To assess material condition and detect changes from original properties

    Hardness testing assesses material condition, detecting changes from heat treatment, service exposure, or welding that could affect mechanical properties.

  6. When should material substitutions be evaluated during pressure vessel repairs?

    Answer: When the original material is unavailable, ensuring the substitute meets or exceeds requirements

    Material substitutions must be carefully evaluated to ensure the replacement material meets or exceeds all requirements for the service conditions.