Development and Application of Guided Wave Technology for Buried Piping Inspection in Nuclear Power Plant

被引：5

作者：

Pei Kuang-Chih ^{[1
]}

Shyu Hung-Fa ^{[1
]}

Lee Ping-Hung ^{[2
]}

Toung Jean-Chung ^{[3
]}

机构：

[1] Inst Nucl Energy Res, NFMD, Nondestruct Testing Lab, Taoyuan, Taiwan

[2] Taiwan Met Qual Control CO, Kaohsiung, Taiwan

[3] Taiwan Power Co, Taipei, Taiwan

来源：

2015 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2015年

关键词：

Guided wave inspection; buried pipe; soil pressure;

D O I：

10.1109/ULTSYM.2015.0080

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Guided wave (GW) technology, well used in petrochemical industries and academia for pipeline inspection, were studied to evaluate the integrity of buried pipes in nuclear power plant (NPP). Since GW inspection does not require direct access to the entire pipe surface and can be used to screen relatively large component areas from the probe location, this method can be developed to examine the inaccessible portions of pipeline, such as the buried pipes. However, the adhesion, due to soil pressure and anticorrosive coating, caused serious decay during GW propagation. Detection range and discrimination of GW inspection should be studied. In this research, a field experiment was conducted to verify and quantify the attenuation rate caused by coating, soil pressure and pipe size. The on-site inspection could offer not only the data but the uncertainty analysis for the pipeline surroundings. The profiles from a series of GW inspections on ten different pipes were compared and analyzed after an inter-pipe normalization. The test results indicate the relation between soil pressure and GW attenuation rate, so as the influence over decay by the coating/tape or the different GW operating frequencies. Moreover, a real on-site inspection was applied on a buried pipeline near NPP field. A successful GW evaluation was demonstrated.

引用

页数：4