BS EN ISO 17640:2018
Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment

Standard No.

BS EN ISO 17640:2018

Release Date

2019

Published By

British Standards Institution (BSI)

Latest

BS EN ISO 17640:2018

Scope

What is this standard about? This international standard specifies techniques for the manual ultrasonic testing of fusion-welded joints in metallic materials thicker than or equal to 8mm which exhibit low ultrasonic attenuation. The standard’s guidelines detail specific testing techniques for metals that show weakened ultrasonic levels at temperatures of up to 60⁰C. It’s mainly designed for full penetration weld joints where both the welded and parent material are ferritic. It specifies ultrasonic values based on steels with an ultrasonic sound velocity of (5 920±50) m/s for longitudinal waves and (3 255±30) m/s for transverse waves. Who is this standard for? It will be used in the following industries: Oil and gas Power Aerospace Engineering and fabrication Automotive Rail Shipbuilding Defence Off highway Equipment, consumables and materials Quality assurance It will also be useful to universities. Why should you use this standard? It specifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B and C is given in Annex A. The requirements of testing level D, which is intended for special applications, are in accordance with general requirements, although test level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment and tests at object temperatures outside the 0⁰C to 60⁰C range. This document can be used for the assessment of discontinuities, for acceptance purposes, by either of the following techniques: a) Evaluation based primarily on length and echo amplitude of the discontinuity   b) Evaluation based on...

BS EN ISO 17640:2018 history

• 2019 BS EN ISO 17640:2018 Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
• 2017 BS EN ISO 17640:2017 Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
• 2011 BS EN ISO 17640:2010 Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
• 1998 BS EN 1714:1998 Non destructive testing of welded joints - Ultrasonic testing of welded joints