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Liquid Penetrant Test (PT)

Dye Penetrant Examination (PT) also known as Liquefied Penetrant Examination is a Non-Destructive Testing method. The method is used for crack detection in new and in-service installations to verify compliance and ensure safe operation.Dye Penetrant Examination involves applying a liquid to the surface of a material and leaving it to rest for a pre-determined period of time. The liquid, the so called penetrant can be either a color that is easily visible under normal lighting conditions or a yellow/green fluorescent color that requires special lighting conditions to be effective.

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