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API Piping Inspector Sample Questions:

1. The outside diameter of piping in high-temperature service, about 800°F, should be measured to check for

A) diameter enlargement
B) creep
C) internal product build-up
D) swelling

2. What the MAWP is recalculated, the wall thickness used shall be the actual thickness minus:

A) The estimated corrosion loss before the date of the next inspection
B) Three times the estimated corrosion loss before the date of the next inspection
C) Twice the estimated corrosion loss before the date of the next inspection
D) The estimated corrosion loss before the date of the next inspection

3. Erosion of the piping system usually occurs at:

A) Elbows
B) Along straight run pipe
C) Any low-velocity and low-turbulence areas
D) Upstream of pump discharges

4. Of the following examples, which one may cause a leak in a threaded joint?

A) Under pressuring the part
B) Back welding the fitting
C) Changing the direction of flow in the piping system
D) Lack of thread lubricant

5. What is the minimum holding time of SA-106 Grade B, 1 inch thick material?

A) not specified
B) 2.4 hours
C) 1 hour
D) 2 hours

Solutions: