API 571 Brittle Fracture

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  1. A brittle fracture:
    Grows very rapidly with minimum deformation prior to failure
  2. Which of the following materials is least affected by brittle fracture?
    Carbon steel, Chromes, 300 Series SS, 400 Series SS, or all SS?
    300 Series SS
  3. Which of the following is not a critical factor that contributes to a brittle fracture?
    A) The materials fracture toughness
    B) Stress concentration at a flaw
    C) Magnitude of the residual stresses
    D) Maximum operating temperature
    D) Maximum operating temperature
    (this multiple choice question has been scrambled)
  4. Resistance to Brittle Fracture is called?
    Toughness
  5. Which of the following increases the likelihood of Brittle Fracture?
    A) Larger grain size
    B) Operational temperatures above 800°F
    C) Steels less than 1/4" thick
    D) The addition of nickel in the material
    A) Larger grain size
  6. Which of the following increases the likelihood of brittle fracture?
    A) Smaller grain size
    B) Operating above transitional temperature
    C) Thicker materials
    D) the addition of nickel in the material
    C) Thicker Material
  7. What test is used to determine a materials toughness?
    A) Charpy Impact test
    B) Guided Bend Test
    C) Tension Test
    D) Physical fitness test
    A) Charpy Impact Test
    (this multiple choice question has been scrambled)
  8. Most brittle failures occur:
    A) while in operation at elevated temperatures
    B) on "clean" steel
    C) below the impact transition temperature
    D) on thinner materials
    C) Below the impact transition temperature
    (this multiple choice question has been scrambled)
  9. ASME Section VIII had few limitations concerning Brittle Fracture prior to:
    A) 1955
    B) 1962
    C) 1973
    D) 1987
    D) 1987
    (this multiple choice question has been scrambled)
  10. A 4" thick 5 Cr vessel operates at 1200 psig and 900°F. When is this vessel least likely to fail by Brittle Fracture?
    A) Shutting down the unit
    B) Hydrotesting
    C) Normal Operation
    D) Starting up the unit
    C) Normal operation
    (this multiple choice question has been scrambled)
  11. Most brittle failures appear as:
    A) intergranular cracking
    B) cleavage
    C) Branched cracking
    D) ductile tears
    B) cleavage
    (this multiple choice question has been scrambled)
  12. Which of the following is NOT a method used to prevent brittle fracture?
    A) Post weld heat treatment
    B) Thorough inspections
    C) Strict controls on selecting construction materials
    D) Controlling minimum operating temperatures
    B) Thorough inspections
    (this multiple choice question has been scrambled)

Card Set Information

Author:
Gibby
ID:
333821
Filename:
API 571 Brittle Fracture
Updated:
2017-09-06 02:01:04
Tags:
Brittle Fracture
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Description:
API 571 Brittle Fracture
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