API 570 Close Book Mockup Combined Exam Set Questions With Revised Correct Detailed Answers
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Course
API 570
Institution
API 570
API 570 Close Book Mockup
Combined Exam Set Questions
With Revised Correct Detailed
Answers
1) A process pipe should be classified as Class 1 when the percentage of H2S
exceeds:
A. 0.5%.
B. 1%.
C. 2%.
D. 3%.
D. 3%.
2) A welder loses his welding qualifications when he has not w...
API 570 Close Book Mockup
Combined Exam Set Questions
With Revised Correct Detailed
Answers
1) A process pipe should be classified as Class 1 when the percentage of H2S
exceeds:
A. 0.5%.
B. 1%.
C. 2%.
D. 3%.
D. 3%.
2) A welder loses his welding qualifications when he has not welded using the
welding:
A. procedure for 6 months.
B. procedure for 12 months.
C. process for 6 months.
D. process for 12 months.
C. process for 6 months.
3) Cyclic stresses may cause:
A. creep.
B. embrittlement.
C. fatigue.
D. graphitization.
C. fatigue.
4) A pressure test is always required:
A. after all repairs.
,B. after all major repairs and alterations.
C. after all rerates.
D. whenever the Authorized Inspector believes one is necessary.
D. whenever the Authorized Inspector believes one is necessary.
5) More thickness CML's should be selected for piping systems with:
A. long straight-run piping systems.
B. higher potential for stress corrosion cracking.
C. higher potential for hydrogen blistering.
D. higher expected corrosion rates.
D. higher expected corrosion rates.
6) During an in-service inspection, an old fabrication imperfection, incomplete
penetration, was
discovered in a weld. This imperfection must be evaluated:
A. to the acceptance standards of the original construction code.
B. to the acceptance standards of the current edition of B31.3.
C. to the acceptance standards of either the construction code or the current
B31.3.
D. by an Engineer or Corrosion Specialist.
D. by an Engineer or Corrosion Specialist.
7) During a direct visual exam of a pipe weld, the minimum light intensity should
be:
A. 10 footcandles.
B. 50 footcandles.
C. 100 footcandles.
D. 1000 footcandles.
C. 100 footcandles.
8) Describe the "3G"welding test position.
A. Horizontal groove
B. Vertical groove
C. Overhead groove
D. Arkansas bell-hole
,B. Vertical groove
9) When welding piping components of different thickness, the thicker part
should be trimmed
with a maximum taper of:
A. 10°.
B. 20°.
C. 30°.
D. 40°.
C. 30°.
10) Which of the following piping components is most likely to have a substitution
with the wrong
material?
A. Bolting
B. Expansion joint
C. Weld-neck flange
D. 20' length of 6 NPS pipe
A. Bolting
11) Graphitization of carbon steels begins to occur when metal temperatures
exceed:
A. 200 °F.
B. 800 °F.
C. 1000°F.
D. 1100 °F.
B. B. 800 °F.
12) Which of the following often causes a pressure relief device's spring to
fail by stress
corrosion cracking?
A. Carbon
B. Hydrogen sulfide
C. Pyrophoric iron
D. Sulfur
B. Hydrogen sulfide
, 13) During a pipe repair, preheat is substituted for the required postweld
heat treatment. What
is the minimum acceptable preheat temperature?
A. 150 °F
B. 200 °F
C. 300 °F
D. 500 °F
C. 300 °F
14) The maximum inspection interval for a pressure relief device in a clean,
non-corrosive and
non-fouling service is:
A. 5 years.
B. 10 years.
C. based on performance of the device with a maximum interval of 5
years.
D. based on performance of the device with a maximum interval of 10
years.
D. based on performance of the device with a maximum interval of 10 years.
16) Per PCC-2, the minimum radius on a vessel fillet-welded patch plate is:
A. 1".
B. 2".
C. 3".
D. 6".
C. 3".
17) When establishing a PMI program, who determines the extent of PMI
performed?
A. Authorized Inspector
B. Owner/User
C. Repair organization
D. Engineering organization
B. Owner/User
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