UNE-EN ISO 17636-2:2023

This document specifies fundamental techniques of digital radiography with the object of enabling

satisfactory and repeatable results to be obtained economically. The techniques are based on generally

recognized practice and fundamental theory of the subject.

This document applies to the digital radiographic examination of fusion welded joints in metallic

materials. It applies to the joints of plates and pipes. Besides its conventional meaning, pipe , as used in

this document, covers other cylindrical bodies such as tubes, penstocks, boiler drums, and pressure

vessels.

NOTE This document complies with most requirements of ISO 16371-2.[3]

This document specifies the requirements for digital radiographic X- and gamma-ray testing by either

computed radiography (CR) or radiography with digital detector arrays (DDA) of the welded joints of

metallic plates and tubes for the detection of imperfections.

Digital detectors provide a digital grey value (GV) image which can be viewed and evaluated using a

computer. This document specifies the recommended procedure for detector selection and

radiographic practice. Selection of computer, software, monitor, printer and viewing conditions are

important, but are not the main focus of this document. The procedure specified in this document

provides the minimum requirements for radiographic practice which permit exposure and acquisition

of digital radiographs with equivalent sensitivity for detection of imperfections as film radiography, as

specified in ISO 17636-1.

This document does not specify acceptance levels for any of the indications found on the digital

radiographs. ISO 10675 provides information on acceptance levels.

If contracting parties apply lower test criteria, it is possible that the quality achieved is significantly

lower than when this document is strictly applied.