API-571 무료 덤프문제 온라인 액세스

(Which of the following would be most useful in finding carbolic acid corrosion?)

• A.Acoustic emission testing
• B.Ultrasonic and radiographic testing
• C.Cutting a boat sample for laboratory analysis
• D.Angle beam ultrasonic testing

Amine corrosion occurs principally on what class of materials?

• A.Duplex Stainless Steels
• B.Low Alloy Steels
• C.Austenitic Stainless Steels
• D.Carbon Steels

Besides corrosion, what other damage mechanism in hydrofluoric (HF) acid service should inspectors be alert to?

• A.Wet HF cracking
• B.Hydrogen stress cracking
• C.Fluoride stress cracking
• D.Stress corrosion cracking

Erosion and erosion-corrosion metal loss is characterized by:

• A.grooves and gullies.
• B.rough pits and pock marks.
• C.smooth pits.
• D.linear striations.

Proactive and retroactive positive material identification programs are especially useful for services exposed to:

• A.Caustic embrittlement
• B.Ammonia stress corrosion cracking
• C.Sour water
• D.Sulfidation