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This International Standard specifies acceptance levels for the time-of-flight diffraction technique (TOFD) of full penetration welds in ferritic steels from 6 mm up to 300 mm thickness which correspond to the quality levels of ISO 5817. These acceptance levels are applicable to indications classified in accordance with ISO 10863. The text of ISO 15626:2011 has been prepared by Technical Committee ISO/TC 44 "Welding and allied processes" and has been taken over as EN ISO 15626:2012 by Technical Committee CEN/TC 121 "Welding and allied processes", the secretariat of which is held by DIN (Germany). The responsible German committee is NA 062-08-23 AA "Ultraschallprüfung" ("Ultrasonic testing") at the Materials Testing Standards Committee (NMP) at DIN.
This document replaces DIN EN 15617:2009-07 .
This document has been replaced by: DIN EN ISO 15626:2018-11 .