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Work in this regard has been undertaken and the manuals on radiographic testing and ultrasonic testing have already been issued in 1992 and 1999, respectively, Portable video inspection unit with zoom allows inspection of large tanks and vessels, railroad tank cars, sewer lines. Page 5. Liquid Penetrant Testing (LPT). 1.1 This practice establishes the minimum requirements for conducting liquid penetrant examination of nonporous metal, and nonmetal components. NOTE 1—This LIQUID PENETRANT EXAMINATION. SE-165. (Identical with ASTM Specification E 165-95). 1. Scope. 1.1 This test method covers procedures for penetrant.Overview of Liquid Penetrant Testing (PT):. ▫ What is PT? ▫ How is PT Performed? ▫ PT Processes. ▫ Advantages/Disadvantages. ▫ Safety Precautions. Liquid penetrant testing. In this methodology, the defects or cracks are studied employing a penetrant or a dye. Capillarity or capillary action is the century. This method is used to reveal surface discontinuities by bleedout of a colored or fluorescent dye from the flaw. The technique is based on the