API API-571 Corrosion and Materials Professional Online Training
API API-571 Online Training
The questions for API-571 were last updated at Nov 19,2024.
- Exam Code: API-571
- Exam Name: Corrosion and Materials Professional
- Certification Provider: API
- Latest update: Nov 19,2024
Many thermal fatigue cracks are filled with:
- A . chlorides.
- B . hydroslime.
- C . oxides.
- D . sulfides.
Titanium Hydriding damage occurs primarily in sour water strippers and amine units in the overhead condensers, heat exchanger tubes and other titanium equipment operating above _________.
- A . 300º F
- B . 270º F
- C . 210º F
- D . 165º F
Heat treatment can have a significant effect on the toughness and hence fatigue resistance of a metal. In general, ________ grained microstructures tend to perform better than _________ grained.
- A . Fine, Course
- B . Austenetic, martensitic
- C . Course, Fine
- D . Martensitic, austenetic
____________ is a form of environmental cracking that can initiate on the surface of high strength low alloy steels and carbon steels with highly localized zones of high hardness in the weld metal and HAZ as a result of exposure to aqueous HF acid service.
- A . Sulfide stress cracking
- B . Hydrogen stress cracking
- C . Caustic stress cracking
- D . Hydrogen induced cracking
SOHIC is driven by localized stresses so that __________ is somewhat effective in preventing SOHIC damage.
- A . PWHT
- B . Preheat
- C . Temperature
- D . None of the above
Which of these materials are not susceptible to Spheroidization?
- A . Carbon steel
- B . 9Cr-1Mo
- C . 316 SS
- D . Both A and B
A form of corrosion that can occur at the junction of dissimilar metals when they are joined together in a suitable electrolyte is __________.
- A . Galvanic corrosion
- B . Anodic corrosion
- C . Cathodic corrosion
- D . All of the above
Proper application of ________ will control but not eliminate microbes that cause MIC so that continued treatment is necessary.
- A . Ozone
- B . Caustic
- C . Biocides
- D . None of the above
At elevated temperature, the carbide phases in certain carbon steels are unstable and may decompose into _______. This decomposition is known as graphitization.
- A . Silicon
- B . Graphite nodules
- C . Carbon dust
- D . Graphite dust
Which of these materials are susceptible to brittle fracture?
- A . Carbon steels
- B . Low alloy steels
- C . 400 Series SS
- D . All of the above
