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| Development and Application of Thermal Fatigue Monitoring System in Nuclear Power Plant |
| Received:May 24, 2021 Revised:June 18, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2022.01.010 |
| KeyWord:nuclear power plant pipeline thermal fatigue monitoring assessment |
| Author | Institution |
| ZHANG Yan-zhao |
Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, , China |
| ZHU Bin |
Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, , China |
| CHEN Ming-ya |
Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, , China |
| MEI Jin-na |
Suzhou Nuclear Power Research Institute Co. Ltd, Suzhou, , China |
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| Abstract: |
| The actual transient parameters of nuclear power plants are often more complex than the design conditions. Several failures in the primary loop of PWR nuclear power plants in the world are caused by thermal stratification and thermal shock which are not fully considered in the design. For the transient that cannot be accurately considered in the design, the accurate evaluation of component fatigue life is mainly realized by adding additional local measuring points. But it is still at the initial stage in domestic that realize accurate evaluation of component fatigue life. In order to solve the problem of thermal fatigue, a thermal fatigue monitoring system, TECMAN, has been developed independently and applied in a nuclear power plant in China. The results show that the thermal stratification and thermal shock of fluid in surge tube during startup are successfully monitored by TECMAN system, which provides an effective input for thermal fatigue assessment. The temperature monitoring curve of the system is in good agreement with that of the original sensor monitoring curve, which shows that the data of TECMAN system is real and reliable. Based on the monitoring data, the thermal fatigue evaluation of the pipeline is of great significance to realize the 60 a operation of the nuclear power plant. |
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