What action is necessary if the penetrant is inadvertently allowed to dry on the test piece?

Related MCQs

• When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece which has been immersed in the penetrant because:
• When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)
• A soft aluminium test piece is to be penetrant tested. The piece has previously been sand blasted to remove tightly adhering soils. What additional surface preparation should be performed?
• When performing a post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?
• When a mercury vapour black light is inadvertently cut off, approximately how long should it be allowed to cool before attempting to restart?
• During a visible, solvent removable penetrant test, complete penetrant removal is indicated by:
• Which of the following is the most desirable method of pre-cleaning a test piece prior to penetrant testing?
• What is the likely result of incomplete removal of all excess penetrant from the test piece surface?
• The time period during which penetrant remains on the surface of the test piece is called:
• Which penetrant process is best suited to the detection of discontinuities in a test piece having threads and keyways?