Practice Test Geeks(API 510) Certified Pressure Vessel Inspector Practice Test
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Repair and Alteration Standards Flashcards

7 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.

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  1. Under API 510, who is responsible for determining whether an alteration requires engineering review and design calculations?

    Answer: The authorized pressure vessel inspector in consultation with the owner/user

    The authorized pressure vessel inspector, working with the owner/user, determines whether a change qualifies as an alteration requiring engineering review.

  2. A vessel operating at a MAWP of 250 psi requires a pneumatic leak test after a repair. The typical pneumatic test pressure is:

    Answer: 1.1 times the MAWP (275 psi)

    API 510 references ASME Section VIII, which specifies a pneumatic test pressure of 1.1 times the MAWP for pneumatic tests.

  3. When a shell plate section is replaced on a vessel constructed to ASME Section VIII Div. 1, the replacement material must have:

    Answer: An ASME material specification (SA or SB designation) with traceable material certification

    Replacement materials must conform to an ASME-listed specification with material test reports (MTRs) for full traceability.

  4. The primary purpose of magnetic particle testing (MT) after weld repair on a carbon steel vessel is to detect:

    Answer: Surface and near-surface cracks, laps, and seams open to or near the surface

    MT detects surface-breaking and near-surface discontinuities in ferromagnetic materials by revealing flux leakage at defect locations.

  5. When repairing a vessel with a stainless steel overlay cladding, the repair weld must be made with filler metal that:

    Answer: Matches or is compatible with the cladding alloy composition

    Cladding repair filler metal must be compatible with the alloy being repaired to maintain corrosion resistance and prevent galvanic incompatibility.

  6. API 510 requires that repair and alteration records be maintained for:

    Answer: The life of the vessel

    API 510 requires that all repair and alteration records be retained for the life of the pressure vessel.

  7. A corroded area found during inspection shows metal loss below the minimum required thickness (t_min). The most engineering-sound repair approach is to:

    Answer: Weld build-up or insert plate to restore thickness to at least t_min

    Restoring the wall thickness to at least t_min via weld build-up or insert plate is the preferred repair; derating alone does not restore structural integrity.