API Corrosion and Materials Professional - API-571 模擬練習
The most effective means of preventing caustic stress corrosion cracking is:
正解: D
解説: (PassTest メンバーにのみ表示されます)
Refer to the following table:
Corroded End - Anodic (More Active)
Magnesium
Magnesium alloys
Zinc
Aluminum
Aluminum alloys
Steel
Cast iron
Type 410 SS (active state)
Ni-Resist
Type 304 SS (active state)
Type 316 SS (active state)
Lead
Tin
Nickel
Brass
Copper
Bronze
Copper-Nickel
Monel
Nickel (passive state)
Type 410 SS (passive state)
Type 304 SS (passive state)
Type 316 SS (passive state)
Titanium
Graphite
Gold
Platinum
Protected End - Cathodic (More Noble)
Which of the following metal combinations is most likely to experience galvanic corrosion in brackish water or seawater?
Corroded End - Anodic (More Active)
Magnesium
Magnesium alloys
Zinc
Aluminum
Aluminum alloys
Steel
Cast iron
Type 410 SS (active state)
Ni-Resist
Type 304 SS (active state)
Type 316 SS (active state)
Lead
Tin
Nickel
Brass
Copper
Bronze
Copper-Nickel
Monel
Nickel (passive state)
Type 410 SS (passive state)
Type 304 SS (passive state)
Type 316 SS (passive state)
Titanium
Graphite
Gold
Platinum
Protected End - Cathodic (More Noble)
Which of the following metal combinations is most likely to experience galvanic corrosion in brackish water or seawater?
正解: C
解説: (PassTest メンバーにのみ表示されます)
An inspector observes sharp-edged pitting in piping immediately downstream from an orifice. This damage has most likely resulted from which damage mechanism?
正解: D
解説: (PassTest メンバーにのみ表示されます)
Which of the following is a contributing factor in caustic corrosion?
正解: A
解説: (PassTest メンバーにのみ表示されます)
(A section of vacuum bottom outlet piping is being replaced because of naphthenic acid corrosion (NAC).
Which of the following potential replacement materials would be most resistant to NAC?)
Which of the following potential replacement materials would be most resistant to NAC?)
正解: C
解説: (PassTest メンバーにのみ表示されます)
Spheroidization is a change in the microstructure of steels that can occur after exposure to a minimum temperature of:
正解: C
解説: (PassTest メンバーにのみ表示されます)
Amine corrosion is primarily caused by:
正解: C
解説: (PassTest メンバーにのみ表示されます)
In most cases, brittle fracture occurs only at:
正解: D
解説: (PassTest メンバーにのみ表示されます)
Corrosion rates of carbon steel pipe in sulfuric acid service increase significantly:
正解: D
解説: (PassTest メンバーにのみ表示されます)
How can temper embrittlement be prevented if a material contains critical levels of the appropriate impurity elements and is exposed in the embrittling temperature range?
正解: B
解説: (PassTest メンバーにのみ表示されます)
Decarburization damage is normally verified by:
正解: B
解説: (PassTest メンバーにのみ表示されます)