A. Polythionic acid
B. Cyanides
C. Carbonates
D. Amines
A. Grade of steel
B. Amount of aeration
C. Moisture content
D. Ethanol percentage
A. Carbonate stress corrosion cracking
B. Polythionic acid stress corrosion cracking
C. Sour water stress corrosion cracking
D. Wet hydrogen sulfide cracking
A. At the toe of the weld in the heat-affected zone of the ferritic material.
B. In the center of the dissimilar weld.
C. In the parent metal on the austenitic side of the weld.
D. At the toe of the weld in the heat-affected zone of the austenitic material.
A. 300 series stainless steels are also susceptible to high-temperature hydrogen attack at conditions normally seen in refinery units.
B. Acoustic emission testing is not a proven method for the detection of high-temperature hydrogen attack damage.
C. High-temperature hydrogen attack damage is most often limited to welds and heat-affected zones.
D. High-temperature hydrogen attack will most often be associated with the formation of surface blisters.
A. Dissolved iron oxides
B. Sodium sulfites or hydrazines
C. High pH from water treatment problems
D. Carbon dioxide and oxygen
A. That are not soluble in naphtha
B. With low molecular weight
C. With naphthenic acids
D. That condense above the water dew point
A. Duplex Stainless Steels
B. Carbon -1/2 Molys
C. High Strength Low Alloys
D. Chrome-Molybdenum Alloys
A. 12%
B. 35%
C. 20%
D. 45%
