Norm

NEN-EN-ISO 20601:2019 en

Niet-destructief onderzoek van lassen - Ultrasoon onderzoek - Gebruik van geautomatiseerde phased array- technologie voor stalen onderdelen met kleine wanddikte

88,37 96,32 Incl BTW

Over deze norm

Status Definitief
Aantal pagina's 18
Commissie Lassen en verwante processen
Gepubliceerd op 01-01-2019
Taal Engels
NEN-EN-ISO 20601 specifies the application of phased array technology for the semi- or fully automated ultrasonic testing of fusion-welded joints in steel parts with thickness values between 3,2 mm and 8,0 mm. This meets the typical range of tube wall thickness values in boilers, which is an important application of this testing technology. The minimum and maximum value of the wall thickness range can be exceeded, when testing level “D” of this document is applied. This document applies to full penetration welded joints of simple geometry in plates, tubes, pipes, and vessels, where both the weld and parent material are low-alloy and/or fine grained steel. Where material-dependent ultrasonic parameters are specified in this document, they are based on steels having a sound velocity of (5 920 ± 50) m/s for longitudinal waves, and (3 255 ± 30) m/s for transverse waves. It is necessary to take this fact into account when testing materials with a different velocity. This document provides guidance on the specific capabilities and limitations of phased array technology for the detection, location, sizing and characterization of discontinuities in fusion-welded joints. Ultrasonic phased array technology can be used as a stand-alone technique or in combination with other non-destructive testing (NDT) methods or techniques, during manufacturing and testing of new welds/repair welds (pre-service testing). This document specifies two testing levels: - level “C” for standard situations; - level “D” for different situations/special applications. This document describes assessment of discontinuities for acceptance purposes based on: - height and length; - amplitude (equivalent reflector size) and length; - go/no-go decision. This document does not include acceptance levels for discontinuities.

Details

ICS-code 25.160.40
Nederlandse titel Niet-destructief onderzoek van lassen - Ultrasoon onderzoek - Gebruik van geautomatiseerde phased array- technologie voor stalen onderdelen met kleine wanddikte
Engelse titel Non-destructive testing of welds - Ultrasonic testing - Use of automated phased array technology for thin-walled steel components

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