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API Pressure Vessel Inspector Sample Questions:

1. What can be done to extend the life of a vessel with a corroded area in the shell plate 6 inches from the weld, a joint efficiency of less than 1, and a corrosion thickness currently near the minimum required thickness?

A) Recalculate t minimum for current operating conditions using E < 1.
B) Monitor the thickness during the run.
C) Recalculate t minimum for design conditions using E = 1.
D) Recalculate t minimum for current operating conditions using E = 1.

2. Under API-510, a pressure vessel inspector must renew their certification every:

A) 6 years
B) 10 years
C) 3 years
D) 5 years

3. Which is the most severe stress caused by internal pressure in a cylindrical shell?

A) Longitudinal stress acting along the longitudinal axis
B) Circumferential stress acting along the longitudinal axis
C) Longitudinal stress acting along the circumferential axis
D) Circumferential stress acting along the circumferential axis

4. What action is required under API-510 if a pressure vessel's corrosion rate exceeds expected values?

A) Immediate shutdown
B) Recalculation of the vessel's remaining life
C) No specific action required
D) Notification of the API

5. Which type of discontinuity can liquid penetrant inspection find?

A) Cracks open to the surface
B) Laminations on the surfaces of plate
C) Internal cracking of welds
D) Subsurface porosity

Solutions: