ASTM E1742/E1742M, 2011 Edition, titled “Standard Practice for Radiographic Examination” has just been released and is available now from Document Center Inc. This practice establishes the basic parameters for the application and control of the radiographic method. The standard is written so it can be specified on the engineering drawing, specification, or contract.
E1742/E1742M establishes the minimum requirements for radiographic examination for metallic and nonmetallic materials. The criteria presented for the radiographic examination are applicable to all types of metallic and nonmetallic materials. However, the standard is intended to control the quality of the radiographic images and not to establish acceptance criteria for parts and materials.
It is not a detailed how-to procedure to be used by a non-destructive test (NDT) facility and so must be supplemented by a detailed procedure. ASTM Test Methods E1030, E1032, and E1416 contain information to help develop detailed technique/procedure requirements.
Again, because the number of the standard has both the E1742 and E1742M included, the values are stated in either SI units or inch-pound units. They are to be regarded separately as standard because the values stated in each may not be exact equivalents. Therefore, each system needs to be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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