T.O. 33B-1-1
2-13
application procedures for fluorescent penetrant (Type I) and visible-dye penetrant (Type II) are similar, the process
flow charts are applicable to both types of penetrants.
2.2.8
Sensitivity.
The term "sensitivity", when used in conjunction with penetrant inspection processes refers to the ability to detect
flaws. Sensitivity, when used in this context, is a relative factor. More sensitive inspection processes are capable of
detecting smaller flaws than less sensitive processes. Among the several factors that influence the sensitivity of a given
penetrant inspection process are the cleaning methods on the parts before the penetrant inspection, the selection of
penetrant materials and the process by which the materials are used. This is not to be confused with "penetrant system
sensitivity level" which is a penetrant system classification term mentioned in paragraph 2.2.5 that will be further
discussed in paragraph 2.4.4.3.
