Key Words Flashcards
Define – alteration
Physical change
Define - repair
Restore – suitable
Corrosion - cause for fatigue crack
Cyclic stress
Define – imperfection that exceeds the acceptance criteria
Defect
Define – discontinuity that may or may not exceed the acceptance criteria
Imperfection
Define – RBIs two primary factors
Probability of failure and consequence of failure
Repairs – number of new flange assemblies to be inspected during repairs and alterations
A representative sample
Insp - Basis of APIs, 570’s piping classification
Consequence of failure
Corrosion – method by which process leaks can lead to brittle fracture
Auto-Refrigeration
NDE - Number of CMLs To obtain thickness readings during inspection 
Representative
NDE -CML That must be measured during a thickness inspection
CML with earliest renewal date
PRD’ s - How relief device intervals are determined 
Performance
Corrosion – type of soil that is most corrosive
Low resistivity
Corrosion – factors that affect the creep rate
Time, temperature and stress
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