When developing a vessels inspection plan, who should help, when needed, to identify specific damage mechanisms and their locations
Corrosion specialist
During risk assessment, which of the following is not a significant factor in the probability of failure?
A) Amount of process fluid
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
Which of the following mechanisms creates either general or localized corrosion?
C) Naphthenic Acid
Which damage mechanisms created sub surface cracking?
Wet hydrogen sulfide cracking
Which damage mechanisms creates micro-fissuring which leads to macro-cracking?
Creep
Which of the following vessels is most likely to be affected by thermal fatigue?
D) Coke drum
Deviations from an inspection plan should be approved by the
Engineer or inspector
On stream inspections
can be performed while the vessel is pressurized or depressurized
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
CUI is an inspection concern for insulated duplex stainless steel vessels that operate between
280 to 350
Which of the following is not a most susceptible area for CUI damage on an insulated vessel?
A) Below stiffening rings
Which type of insulation is most likely to absorb and hold water?
Calcium Silicate
Which of the following conditions would justify fewer CML's on a vessel?
B) Uniform corrosion is expected
The NDE method called Alternating Current Flux Leakage is useful in finding
surface breaking cracks
What is the preferred exam technique for determining the vessel wall thickness of a 60" I.D. vessel that has localized thinning
UT scanning
What is a good exam technique for determining the nozzle wall thickness of an insulated 6 NPS nozzle that has localized thinning
profile RT
A pressure test is normally conducted after all
alterations and major repairs
A hydro test is performed on a vessel with austenitic SS cladding. What is the max allowed water temp
120°F
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
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
Author
egf4201
ID
314706
Card Set
Study Guide Section 5- Inspection Examination and Testing Practices
Description
Study Guide Section 5- Inspection Examination and Testing Practices