Standard Reference Photographs for Liquid Penetrant Inspection
1.1 These reference photographs are supplied as a means of establishing types and characteristics of surface discontinuities detectable by the penetrant examination methods. They may be used as a reference for acceptance standards, specifications and drawings.
1.2 Actual dimensions including maximum length of indications and number of indications per unit area must be specified by the users of this document. No attempt has been made to establish limits of acceptability or the metallurgical cause of a discontinuity.
Note 1: Examples of these reference photographs are shown in Figs. 1-8.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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