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QUESTION NO: 1
In design and fabrication, it is advisable to avoid sharp changes in cross section, such as short radius fillets or undercut that can give rise to _________.
Long-seam welds are particularly susceptible to reheat cracking due to mismatch caused by fit up problems.
A. Stress concentrations
B. Cracking
C. Circumferential stress
D. All of the above
Answer: A
QUESTION NO: 2
Thermal fatigue is caused by:
A. Cyclic stresses that come from temperature variations.
B. Long term operation at elevated temperatures.
C. Excessive thermal growth.
D. Hours of physical activity during a hot summer day.
Answer: A
QUESTION NO: 3
Sulfide stress cracking (SSC) is defined as cracking of metal under the combined action of tensile stress and corrosion in the presence of _________ and _________.
A. Sulfur, Oxide
B. Hydrogen, water
C. H(2)S, Oxygen
D. Water, H(2)S
Answer: D
QUESTION NO: 4
With high temperature sulfide corrosion (Sulfidization), noticeable increases may be found downstream of _________ injection points.
A. Hydrogen
B. Caustic
C. Ammonia
D. Water
Answer: A
QUESTION NO: 5
Which of the following is not a primary factor contributing to erosion-corrosion?
A. Impact angle (angle that impacting particles strike metal)
B. Tensile strength of the metal
C. Velocity of impacting particles
D. Corrosiveness of the environment
Answer: B
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Exam Name: Corrosion and Materials Professional
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