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
_________ is the main concern during start-up, shutdown and/or hydro testing for equipment/piping operating at elevated temperatures. This event can also occur in an auto refrigeration event in units processing light hydrocarbons.
- A . Stress fracture
- B . Carburization
- C . Spheroidization
- D . Brittle fracture
Fatigue will not occur in carbon steel if stresses are below the:
- A . Transition limit.
- B . Endurance limit.
- C . Hardening limit.
- D . Speed limit.
________ has been a major problem on coke drum shells.
- A . Thermal fatigue
- B . Stress cracking
- C . Erosion
- D . Temper embrittlement
The “L” grade of stainless steels will sensitize if exposed more than several hours above _______ or long term above _____.
- A . 1200º F, 800º F
- B . 1000º, 600º F
- C . 1000º F, 750º F
- D . 1100º F, 800º F
Once cracking from LME has occurred, grinding out the affected area ______ an acceptable fix.
- A . Is
- B . Is not
- C . Can be
- D . Can not be
Ferritic stainless steels are usually not used in __________ applications.
- A . Non-pressure boundary
- B . Pressure boundary
- C . High temperature
- D . Low temperature
In general, the resistance of carbon steel and other alloys to High temperature corrosion is determined by the ________ content of the material.
- A . Molybdenum
- B . Chromium
- C . Carbon
- D . All of the above
Conditions favoring carburization include a high gas phase carbon activity and _______ oxygen potential.
- A . Low
- B . High
- C . Negative
- D . Positive
It is generally accepted that stresses approaching _________ are required for SCC to occur so that thermal stress relief is effective in preventing caustic SCC.
- A . MAWP
- B . Yield
- C . Creep range
- D . Critical
Low creep ductility is __________ severe in high tensile strength materials and welds.
- A . More
- B . Less
- C . Usually
- D . Not
