Online Access Free API-571 Practice Test

Cracks formed by carbonate stress corrosion are best detected:

• A.ultrasonic shear wave examination because cracks develop internally.
• B.with a wet fluorescent magnetic-particle testing technique.
• C.with an Acoustic Emission Testing technique.
• D.with a penetrant testing technique used after abrasive or high pressure water blasting of the surface.

Which of the following is the lowest threshold temperature at which creep damage is a concern in carbon steel with tensile strength > 60ksi (414 MPa)?

• A.900°F (482°C)
• B.700°F (371°C)
• C.800°F (427°C)
• D.600°F (316°C)

In a wet H2S-type environment, what fluid material will significantly increase the probability of blistering?

• A.Cyanides
• B.Polythionic acid
• C.Carbonates
• D.Amines

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?

• A.Steel coupled to nickel
• B.Aluminum coupled to steel
• C.Cast iron coupled to Ni-resist
• D.Brass coupled to nickel

Internal galvanic corrosion in piping near the joint of two dissimilar metals is best detected by external:

• A.Metallographic examination
• B.Ultrasonic thickness testing
• C.Liquid-penetrant testing
• D.Eddy-current testing