Depth size technology of ultrasonic testing in steam generator tubes
- Nuclear Engineering, Ltd., Osaka (Japan)
- Kansai Electric Power Co., Inc., Osaka (Japan)
The Eddy Current Testing technique, which is applied to Steam Generator (SG) tubes during the in-service inspection, cannot provide sufficient detectability for tight cracks. On the other hand, Ultrasonic Testing (UT) is the best technique for detection of tight cracks and it has been already applied for the inspection at some actual plants. The currently applied UT technique, however, does not always provide sufficient depth sizing capability. Accordingly, the authors have selected 3 depth sizing techniques, carried out experiment for optimization of transducers, and conducted basic studies using sample Inconel tubes with mechanical defects and artificial corrosion. The results show that Tip Echo Technique gives the best depth correlation for all the samples including those with artificial corrosion.
- OSTI ID:
- 277833
- Report Number(s):
- CONF-960306--; ISBN 0-7918-1226-X
- Country of Publication:
- United States
- Language:
- English
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