BS EN ISO 17636-2:2022

We’ve also published the latest BS EN ISO 17636-1 Non-destructive testing of welds. Radiographic testing - X- and gamma-ray techniques with film. Learn more here.

What is BS EN ISO 17636-2 - Non-destructive testing of welds about?

Non-destructive testing (NDT) is a technique used by industry to evaluate a material, component, structure, or system for differences or defects, without causing damage to the original part. NDT techniques include magnetic particle testing, penetrant testing, ultrasonic testing and radiographic testing. BS EN ISO 17636-2 is an international standard that describes radiographic testing of welds using X- and gamma-ray techniques with digital detectors.

Who is BS EN ISO 17636-2 - Non-destructive testing of welds for?

Within the oil and gas, rail, manufacturing and nuclear industries it will be used by:

• NDT site managers
• Specialist inspectors
• Technologists
• Project managers
• NDT experts
• Research and development engineers
• Quality engineers

What does BS EN ISO 17636-2 - Non-destructive testing of welds cover?

BS EN ISO 17636-2 specifies fundamental techniques of digital radiography to enable 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, specifically 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.

BS EN ISO 17636-2 specifies the requirements for digital radiographic X- and gamma-ray testing by either computer radiography (CR) or radiography with digital detector arrays (DDA) of the welded joints of metallic plates and tubes for the detection of imperfections. It also specifies the recommended procedure for detector selection and radiographic practice.

Why should you use BS EN ISO 17636-2 - Non-destructive testing of welds?

• To enable satisfactory and repeatable results consistently and economically

• To develop expertise

• To improve efficiency

BS EN ISO 17636-2 contributes to UN Sustainable Development Goal 9 on industry, innovation and infrastructure.

What’s new about BS EN ISO 17636-2:2022?

This is an editorial revision of BS EN ISO 17636-2:2013. The major changes in BS EN ISO 17636-2:2022 are:

• Updated normative references and figures
• Evaluation of image quality for digital radiography has been added
• The lower thickness limit for Se-75 applications has been deleted as has the “agreement of contracting parties”
• The permission of “class A” IQI visibility for “class B” testing with Se 75 in 6.9 for w < 10mm has been added
• Reference to Figures 1 to Figure 19 have been added in all relevant clauses
• A clarification of IQI usage for DWDI technique has been added
• Permission to reduce SNR_N if the tube voltage is reduced to < 80% of the values as given has been added
• The usage of ASTM wires and other IQIs by agreement of contracting parties has been added
• The compensation principle 2 (CP 2) has been extended to 3 wire pairs without agreement of contracting parties
• Two annexes have been revised and two new annexes introduced