API API-510 Practice Exams
Last updated on Oct 22,2026- Exam Code: API-510
- Exam Name: Pressure Vessel Inspector
- Certification Provider: API
- Latest update: Oct 22,2026
The re-rating of a pressure vessel will be considered complete only when the authorized pressure vessel inspector witnesses which of the following?
- A . The attachment of an additional nameplate of stamping
- B . The pressure test required by the code
- C . The final painting of the vessel
- D . The stamping of welds by each welder
According to API-510, which type of record must be permanently maintained for a pressure vessel?
- A . Repair records only
- B . Inspection records only
- C . All records related to the vessel’s design, fabrication, inspection, and repairs
- D . Only the most recent inspection record
Explain how API-510 standards ensure the safe operation of pressure vessels within nuclear power plants.
Discuss how API-510 addresses the issue of high-temperature hydrogen attack (HTHA) in pressure vessels.
If a vessel is subjected to temperatures above design, what may happen
- A . Precipitation at the grain boundaries may occur.
- B . The rupture disk may implode
- C . The relief device may fail
- D . Creep of the vessel’s material may occur
Under API-510, when is it required to perform a pneumatic test instead of a hydrostatic test?
- A . When water is not available
- B . When the vessel operates under vacuum
- C . When the vessel contains toxic substances
- D . Always prefer pneumatic testing
When performing an external inspection on a vessel what consideration should be given to the external insulation?
- A . You may not use any plug locations used for UT thickness reading to inspect the vessel
- B . Select portions must be removed for inspections
- C . It shall always be removed to inspect underneath
- D . If insulation is in good condition and the vessel operates within the high and low temperatures stated in API 510, removal of insulation is not necessary for inspection of the vessel
Which of the following is not a responsibility of a pressure vessel inspector according to API-510?
- A . Ensuring compliance with safety standards
- B . Designing pressure vessels
- C . Performing inspections
- D . Documenting inspection findings
Explain how API-510 standards guide the emergency response protocols for pressure vessel failures.
According to API-510, the acceptance criteria for a welded repair must be in accordance with which of the following?
- A . The original code of construction
- B . The latest edition of the ASME code
- C . Any internationally recognized welding standard
- D . The discretion of the inspecting engineer