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ISO 20669:2017

Non-destructive testing — Pulsed eddy current testing of ferromagnetic metallic components

Edition date: 2017-03-13
In Force
Available languages: English, French
Summary:

ISO 20669:2017 spécifie la technique de contrôle par courants de Foucault pulsés, utilisée pour mesurer l'épaisseur de composants métalliques ferromagnétiques, qu'ils présentent ou non un revêtement, une isolation et une tôle de protection contre les intempéries.

ISO 20669:2017 s'applique aux contrôles effectués sur des composants en service, fabriqués en acier au carbone et en acier faiblement allié, dans la plage de température comprise entre ? 100 °C et 500 °C (température mesurée à la surface du métal). La gamme des épaisseurs de paroi des composants est comprise entre 3 mm et 65 mm, et la gamme des épaisseurs des revêtements est comprise entre 0 mm et 200 mm. Les composants contrôlés comprennent également des tuyauteries de diamètre supérieur ou égal à 50 mm.

La géométrie des composants a une incidence sur la technique décrite dans le présent document, et l'inexactitude sera impossible à prévoir si cette technique est utilisée sur des composants qui ne correspondent pas à son domaine d'application. Le présent document n'est pas applicable au contrôle des fissures et des pertes de métal localisées dues à des piqûres.

ISO 20669:2017 ne spécifie aucun critère d'évaluation. Les critères d'évaluation doivent être spécifiés par l'accord contractuel entre les parties.



ISO 20669:2017 specifies the pulsed eddy current (PEC) testing technique used to perform thickness measurement on ferromagnetic metallic components with or without the presence of coating, insulation and weather sheeting.

ISO 20669:2017 applies to the testing of in-service components made of carbon steel and low-alloy steel in the temperature of −100 °C to 500 °C (temperature measured at metal surface). The range of wall thickness of components is from 3 mm to 65 mm and the range of thickness of coatings is from 0 mm to 200 mm. The tested components also include piping of diameter not less than 50 mm.

The technique described in this document is sensitive to the geometry of the component and applying the technique to components outside of its scope will result in unpredictable inaccuracy. This document does not apply to the testing of crack defects and local metal loss caused by pitting.

ISO 20669:2017 does not establish evaluation criteria. The evaluation criteria shall be specified by the contractual agreement between parties.
ICS: 19.100-Non-destructive testing
CTN: ISO/TC 135/SC 4 - 52416

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