Study Guide Section 5- Inspection Examination and Testing Practices

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  1. When developing a vessels inspection plan, who should help, when needed, to identify specific damage mechanisms and their locations
    Corrosion specialist
  2. During risk assessment, which of the following is not a significant factor in the probability of failure?
    A) Expected damage mechanisms
    B) Quality of the inspection program
    C) Amount of process fluid
    D) Quality of the maintenance program
    C) Amount of process fluid
    (this multiple choice question has been scrambled)
  3. During an RBI assessment of a pressure vessel, what are the two biggest factors of Consequence of Failure?
    Amount of product and type of product
  4. Which of the following mechanisms creates either general or localized corrosion?
    A) Naphthenic Acid
    B) Temper Embrittlement
    C) HTHA
    D) Graphitization
    A) Naphthenic Acid
    (this multiple choice question has been scrambled)
  5. Which damage mechanisms created sub surface cracking?
    Wet hydrogen sulfide cracking
  6. Which damage mechanisms creates micro-fissuring which leads to macro-cracking?
    Creep
  7. Which of the following vessels is most likely to be affected by thermal fatigue?
    A) Distillation column
    B) Coke drum
    C) Overhead accumulator
    D) Knockout drum
    B) Coke drum
    (this multiple choice question has been scrambled)
  8. Deviations from an inspection plan should be approved by the
    Engineer or inspector
  9. On stream inspections
    can be performed while the vessel is pressurized or depressurized
  10. A portion of the soil around a buried vessel may be excavated to allow thickness measures of vessel to be taken. When excavating, care must be given  so that
    any cathodic protection or any external coating is not damaged
  11. CUI is an inspection concern for insulated duplex stainless steel vessels that operate between
    280 to 350
  12. Which of the following is not a most susceptible area for CUI damage on an insulated vessel?
    A) Below stiffening rings
    B) Nozzles
    C) Bottom heads
    D) Ladder Clips
    A) Below stiffening rings
    (this multiple choice question has been scrambled)
  13. Which type of insulation is most likely to absorb and hold water?
    Calcium Silicate
  14. Which of the following conditions would justify fewer CML's on a vessel?
    A) Uniform corrosion is expected
    B) Localize corrosion is expected
    C) Vessel contains propane
    D)Corrosion rate is less than 0.010 ipy
    A) Uniform corrosion is expected
    (this multiple choice question has been scrambled)
  15. The NDE method called Alternating Current Flux Leakage is useful in finding
    surface breaking cracks
  16. What is the preferred exam technique for determining the vessel wall thickness of a 60" I.D. vessel that has localized thinning
    UT scanning
  17. What is a good exam technique for determining the nozzle wall thickness of an insulated 6 NPS nozzle that has localized thinning
    profile RT
  18. A pressure test is normally conducted after all
    alterations and major repairs
  19. A hydro test is performed on a vessel with austenitic SS cladding. What is the max allowed water temp
    120°F
  20. NDE is substituted for a pressure test after a major repair on an in-service vessel. Who must approve this substitution?
    Both the inspector and engineer
  21. A leaking flange was repaired by a leak sealing company that pumped sealant in the gasket area. Later the flange leaks again. What should be done?
    Examine bolts with UT prior to repumping
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Study Guide Section 5- Inspection Examination and Testing Practices
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Study Guide Section 5- Inspection Examination and Testing Practices
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