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API API-570 Exam Syllabus Topics:

API Piping Inspector Sample Questions:

1. With respect to Category 'D' service, what is the maximum allowable undercut for a branch connection?

A) Zero (no evident imperfections)
B) £ 1/32"
C) Both B and C
D) £ 1 mm

2. A transverse crack was discovered in the root pass of a completed weld on the outside of a Category D Fluid Service piping system during a PT test.
Which of the following," statements is most accurate?

A) The PT test should be repeated
B) The welder should be requalified
C) The weld is acceptable
D) The PT test will not show this type of discontinuity from the outside

3. Why should a leaking threaded joint not be tightened while the system is in service?

A) A crack in a thread root might fail
B) The joint might be unscrewed
C) Rust or corrosion might be holding the pressure
D) The craftsman should not be near the threaded connection

4. What is the definition of normalizing?

A) Rapid cooling of a heated metal
B) Process where a ferrous metal is heated to a suitable temperature above the transformation range and is subsequently cooled in still air at room temperature.
C) Heating to and holding at a suitable temperature and then cooling at a suitable rate to reduce hardness, improve machinability, facilitate cold working, etc.
D) Heating an alloy to a suitable temperature, holding that temperature long enough to allow constituents to enter into solid solution and then cooling ~ rapidly enough to hold the constituents.

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

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

Solutions: