Please use this identifier to cite or link to this item:
|Title:||Final Results of the NESC-III Non Destructive Testing Blind Round Robin Trials on Dissimilar Metal Welds|
|Authors:||ERIKSEN Brian; ERIKSSON Arne; HOUGHTON ROBERT|
|Citation:||INSIGHT - Non-destructive Testing and Monitoring vol. 50 no. 11 p. 616-622|
|Publisher:||The British Institute of Non-Destructive Testing|
|Type:||Articles in periodicals and books|
|Abstract:||Recent problems identified in some nuclear power plants with the characterisation of defects of complex morphology, such as primary water stress corrosion cracking, have again cast doubt on ultrasonic inspection effectiveness. There is therefore a need for re-assessment of the capability of in-service inspection methods, especially for inspection of dissimilar metal welds, which continues to be difficult. The level of performance of ultrasonic inspection in defect detection and sizing, which was demonstrated in earlier PISC exercises, is not well aligned with the needs of structural integrity analysis. Development in ultrasonic inspection, for example the trend towards increasing use of phased array probes and tip diffraction methods for sizing, are claimed to deliver significantly improved inspection performance. In order to understand the current capabilities of modern inspection methods a blind round robin trial was launched in the NESC-III project looking at 2 different dissimilar metal welds. This paper provides a synthesis of the entire inspection trial programme and presents the key results for both detection and sizing of the defects. It finally gives the main conclusions and recommendations appearing from the study, which have been agreed unanimously by all participants in the study.|
|JRC Directorate:||Energy, Transport and Climate|
Files in This Item:
There are no files associated with this item.
Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.