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- Title
An approach for stringent quality assurance of steam generator tubes.
- Authors
Rao, B. P. C.; Thirunavukkarasu, S.; Jayakumar, T.; Raj, Baldev
- Abstract
For detection of localised defects in ultrasonically acceptable wall thickness variation regions in 2.3 mm-thick ferromagnetic steam generator tubes, a two-frequency eddy current approach is proposed. The ultrasonic thickness data of a few defect-free tubes is utilised for optimisation of the two-frequency mixing parameters. The approach is validated by detecting a reference standard hole of 1.2 mm diameter in wall thickness variation regions. With suitable thresholds, this approach has been successfully implemented in production-line for meeting the stringent quality assurance needs of steam generator tubes during manufacturing stages.
- Subjects
STEAM generators; EDDY currents (Electric); ULTRASONICS; QUALITY assurance; TUBES
- Publication
Insight: Non-Destructive Testing & Condition Monitoring, 2007, Vol 49, Issue 12, p698
- ISSN
1354-2575
- Publication type
Article
- DOI
10.1784/insi.2007.49.12.698