ISO/TC 135/SC 4 - Eddy current testing

This document defines the general principles to be applied to non-destructive eddy current examination of products and materials in order to ensure defined and repeatable performance. It includes guidelines for the preparation of application documents which describe the specific requirements for the application of the eddy current method to a particular type of product.

ISO 20339:2017 identifies the functional characteristics of eddy current array probes and their interconnecting elements and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of eddy current array probes. Where relevant, this document gives recommendations for acceptance criteria for the characteristics.

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.

ISO 15548-2:2013 identifies the functional characteristics of a probe and its interconnecting elements and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of eddy current equipment. By careful choice of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application. Where accessories are used, these should be characterised using the principles of ISO 15548-2:2013. ISO 15548-2:2013 does not give the extent of verification nor acceptance criteria for the characteristics. These are given in the application documents.

ISO 15548-1:2013 identifies the functional characteristics of a general-purpose eddy current instrument and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of eddy current equipment. By careful choice of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application. Where accessories are used, these are characterized using the principles of ISO 15548-1:2013. ISO 15548-1:2013 gives neither the extent of verification nor acceptance criteria for the characteristics. They are given in the application documents.

ISO 15548-3:2008 identifies the functional characteristics of a general-purpose eddy current system and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of an eddy current equipment. By careful choice of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application. Where accessories are used, these are characterised using the principles of ISO 15548-3:2008. ISO 15548-3:2008 does not give the extent of verification nor acceptance criteria for the characteristics. These are given in the application documents.

ISO 15548-2:2008 identifies the functional characteristics of a probe and its interconnecting elements and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of eddy current equipment. By careful choice of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application. Where accessories are used, these should be characterised using the principles of ISO 15548-2:2008. ISO 15548-2:2008 does not give the extent of verification nor acceptance criteria for the characteristics. These are given in the application documents.

ISO 15548-1:2008 identifies the functional characteristics of a general-purpose eddy current instrument and provides methods for their measurement and verification. The evaluation of these characteristics permits a well-defined description and comparability of eddy current equipment. By careful choice of the characteristics, a consistent and effective eddy current examination system can be designed for a specific application. Where accessories are used, these are characterised using the principles of ISO 15548-1:2008. ISO 15548-1:2008 gives neither the extent of verification nor acceptance criteria for the characteristics. They are given in the application documents.

ISO 15549:2008 defines the general principles to be applied to non-destructive eddy current examination of products and materials in order to ensure defined and repeatable performance. It includes guidelines for the preparation of application documents which describe the specific requirements for the application of the eddy current method to a particular type of product.