API 570 Question Bank (API 570 QB001)

Today's questions..........

37) What are the preferred NDE methods for detecting fatigue cracking?

a) Eddy current testing ultrasonic A-scan testing, and / or possibly hammer testing

b) Liquid penetrant testing, magnetic particle testing and / or possibly acoustic emission testing.

c) Visual testing, eddy current testing and / or possibly ultrasonic testing

d) Acoustic emission testing, hydro-testing, and / or possibly ultrasonic testing.

38) Creep is dependent on:

a) Time, temperature, and stress

b) Material, product contained, and stress

c) Temperature, corrosive medium, and load

d) Time, product contained and load

39) An example of where creep cracking has been experienced in the industry is in the problems experienced with cracking of 1.25 % Chrome steels operating at temperatures above __________ °F.

a) 500

b) 900

c) 1000

d) 1200

40) Brittle fracture can occur in carbon, low-alloy and other ferritic steels at or below __________.

a) 140 degree

b) Ambient

c) 100 degree

d) 30 degree

41) Water and aqueous solutions in piping systems may freeze and cause failure because of the

a) Expansion of these materials

b) Contraction of these materials

c) Construction of these materials

d) Decrease of these materials

42) Different types of inspection and surveillance are appropriate depending on the circumstances and the piping system. Pick the one that does not belong in the following list:-

a) Internal and external visual inspection

b) Thickness measurement inspection

c) Vibrating piping inspection

d) Chemical analysis inspection

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