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Other Non-Destructive Weld Testing Methods

Non-Destructive Weld Testing Standards cover multiple possible methods of testing welds or metallic materials. Non-destructive testing analysis techniques are used for QA, evaluations, research, in cases where the product is expensive or unique, failure analysis, and so on. With a focus on radiographic testing, these standards also cover magnetic, radioscopic, ultrasonic, and other methods. General rules, guides, terminology, are provided, as well as standard test methods, specific techniques, and acceptance levels, together covering both the broad strokes and the nuanced testing procedures.





ISO 23277:2015

Non-destructive testing of welds - Penetrant testing - Acceptance levels

ISO 23277:2015 specifies acceptance levels for indications from surface breaking imperfections in metallic welds detected by penetrant testing. The acceptance levels are primarily intended for use during manufacture examination, but where appropriate, they can be used for in-service inspection. The acceptance levels in ISO 23277:2015 are based on detection capabilities that can be expected when using techniques specified in ISO 3452 series and parameters recommended in annex. The acceptance levels can be related to welding standards, application standards, specifications, or codes. Such a relationship is shown in ISO 17635 for ISO 5817 and ISO 10042. Acceptance levels for grouped indications are not covered by ISO 23277:2015.


ISO 17643:2015

Non-destructive testing of welds - Eddy current testing of welds by complex-plane analysis

ISO 17643:2015 defines eddy current testing techniques for detection of surface breaking and near surface planar discontinuities, mainly in ferritic materials (weld material, heat-affected zones, base material). Eddy current testing can also be specified for use with non-ferritic materials, for example in an application standard. The techniques can be applied to coated and uncoated objects during fabrication and in service, both onshore and offshore. Eddy current testing can be carried out on all accessible surfaces and on welds of almost any configuration. Unless otherwise specified at specific items in this International Standard, the general principles of ISO 15549 apply. NOTE Eddy current testing is usually performed in the as-welded condition. However, the accuracy of the results can be affected by very rough surface finishes.


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