After the General Engineering Research Institute of China Academy of Engineering Physics independently developed the high-temperature radiation-resistant acceleration sensor for nuclear power plants, its newly developed radiation-resistant acoustic emission sensor also passed the acceptance check.
The General Engineering Research Institute of the China Academy of Engineering Physics is affiliated to the China Academy of Engineering Physics and is located in Mianyang City, Sichuan Province. The institute is mainly engaged in the overall engineering design of weapons, the development of advanced large scientific test equipment, environmental testing and measurement and control, engineering mechanics and materials application. It involves more than 20 disciplines, such as weapon systems and applied engineering, mechanical design, solid mechanics, engineering mechanics, testing technology, automatic control, and materials. It is a comprehensive research institute integrating basic theoretical research and engineering application development.
Nuclear power plant sensors are one of the core and key components of the online monitoring system for nuclear power operation. However, the sensors in nuclear power plants are used in harsh environments and need to work reliably in high-temperature and high-irradiation environments for a long period of time. The sensors and preparation processes that are commonly used in the market cannot be satisfied at all.
In a high-radiation environment, each of the materials that make up the sensor must be resistant to radiation, and it must maintain the same performance after 108rad irradiation (equivalent to the radiation dose of a nuclear power unit working for 60 years). At the same time, high temperature is also fatal to the sensor. Ordinary sensors have no signal at all at hundreds of degrees Celsius and are “heated”. Nuclear power sensors need to be “stationary” at high temperatures in order to be “auscultated”. Every failure.
Since 2014, the research team of the General Engineering Research Institute of the Chinese Academy of Engineering Physics has started the research and development of high-temperature radiation-resistant acceleration sensors and radiation-resistant acoustic emission sensors for nuclear power. In August 2015, the high-temperature radiation-resistant acceleration sensor supporting the Pakistan Chashma Nuclear Power Plant developed by the institute passed the inspection; in October 2017, the radiation-resistant acoustic emission sensor supporting the Karachi Nuclear Power Station in Pakistan passed the inspection; The radiation acoustic emission sensor passed the acceptance and was used for the leakage monitoring system of Fujian Huaqing No. 5 and No. 6 Units, the first demonstration project in China.
This equipment is matched with the leakage monitoring system of China Nuclear Power Research and Design Institute, and Fuqing No. 5 and No. 6 units of "Hualong No. 1" have been put into use. The delivery of this series of products indicates that China has successfully broken foreign technology blockades and monopolies, and has domestically produced nuclear power safety monitoring "auscultation pulse" equipment.