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Publication Details: BS EN ISO 17640:2010 - Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment

BS EN ISO 17640:2010 - Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
BS EN ISO 17640:2010 - Non-destructive testing of welds. Ultrasonic testing. Techniques, testing levels, and assessment
Details: Paperback , pages.
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Publication Date: 31/01/2011
Publisher: British Standards Institute (BSI)
ISBN: 9780580555367
Publication Status: Current
Publication Description:

BS EN ISO 17640:2010
Techniques, testing levels and assessment for non-destructive and ultrasonic testing of welds

What is it?

BS EN ISO 17640 is the international standard for manual ultrasonic testing of fusion-welded joints in metallic materials thicker than or equal to 8mm. The guidelines detail specific testing techniques for metals that show weakened ultrasonic levels at temperatures of up to 60C. BS EN ISO 17640 is also primarily designed for penetration weld joints with iron based welded and parent metals. The standard specifies ultrasonic values based on steels with an ultrasonic sound velocity of (5 92050) m/s for transverse waves.

How does it work?

BS EN ISO 17640 has four testing levels labelled as A, B, C and D. The standard focuses on level D which requires specific ultrasonic techniques for: tests on metals that are not iron based; tests on partial penetration welds; tests using automated equipment; and tests at temperatures below 0C or above 60C. You can achieve international compliance with BS EN ISO 17640 by testing signal length and echo or signal character and size using a probe. These comprehensive guidelines include how to use symbols and definitions and prepare metals, equipment and personnel requirements, probe parameters, testing volume and evaluating results.

Contents of BS EN ISO 17640:

Foreword
1 Scope
2 Normative references
3 Symbols and definitions
4 Principle
5 Information required prior to testing
5.1 Items to be specified
5.2 Specific information required before testing
5.3 Written test procedure
6 Requirements for personnel and equipment
6.1 Personnel qualifications
6.2 Equipment
6.3 Probe parameters
7 Testing volume
8 Preparation of scanning surfaces
9 Parent metal testing
10 Range and sensitivity setting
10.1 General
10.2 Reference for sensitivity setting
10.3 Evaluation levels
10.4 Transfer correction
10.5 Signal to noise ratio
11 Testing levels
12 Testing techniques
12.1 General
12.2 Manual scan path
12.3 Testing for imperfections perpendicular to the testing surface
12.4 Location of indications
12.5 Evaluation of indications
13 Test report
Annex A (normative) Testing levels for various types of welded joints

 
 
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