Kalyanasundaram, P. ; Jayakumar, T. ; Raj, B. (1989) Acoustic emission technique for leak detection in an end shield of a pressurised heavy water reactor Nuclear Engineering and Design, 116 (2). pp. 181-185. ISSN 0029-5493
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0029-5493(89)90236-7
Abstract
This paper discusses the successful application of the Acoustic Emission Technique (AET) for detection and location of leak paths present on the inaccessible side of an end shield of a Pressurised Heavy Water Reactor (PHWR). The methodology was based on the fact that air and water leak AE signals have different characteristic features. Baseline data was generated from a sound end-shield of a PHWR for characterizing the background noise. A mock up end-shield system with saw cut leak paths was used to verify the validity of the methodology. It was found that air leak signals under pressurisation (as low as 3 psi) could be detected by frequency domain analysis. Signals due to air leaks from various locations of a defective end-shield were acquired and analysed. It was possible to detect and locate leak paths. Presence of detected leak paths were further confirmed by alternate test.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
ID Code: | 90621 |
Deposited On: | 11 May 2012 07:30 |
Last Modified: | 11 May 2012 07:30 |
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