The reporter learned from the General Engineering Research Institute of China Academy of Engineering Physics on the 27th that after the independent research and development of high-temperature radiation-resistant accelerometers for nuclear power plants, the newly developed radiation-resistant acoustic emission sensors passed the acceptance test. The equipment and China Nuclear Power Research The design of the leak monitoring system of the design institute has provided Fuqing No. 5 and No. 6 units of 'Hualong No.1'. The delivery of this series of products marks the successful breaking of foreign technology blockade and monopoly in China, and the safety of localized nuclear power. Monitor the 'Auscultation Pulse' device.
Nuclear power plant sensors are one of the key components of the nuclear power operation online monitoring system. Researcher Qiu Yong, director of the Institute of General Affairs of the Chinese Academy of Sciences, said that the use of nuclear power plant sensors is harsh and requires long-term reliable operation in high-temperature and high-irradiation environments. The preparation process is simply not satisfied.
He said that in order to make the entire sensor resistant to radiation, each material that makes up the sensor is radiation-tolerant, and it will remain the same after experiencing 108 rad exposure (equivalent to the 60-year irradiation dose of the nuclear power unit). The selection of materials should be studied, and the test verification should not be less. From the sensitive materials of the sensor, the bulk material, to the connector, the metal used for the high-temperature cable, and the non-metallic materials must be verified one by one. At the same time, the high temperature is also fatal to the sensor. The sensor has no signal at a few hundred degrees Celsius, and it is 'hot', and the nuclear power sensor needs to be 'stationally' at high temperature to 'aused' every failure.
The research team of the institute has completed the independent research and development of high-temperature radiation-resistant accelerometers and radiation-resistant acoustic emission sensors for nuclear power in 4 years. In August 2015, the high-temperature radiation-resistant accelerometers of the Pakistan Chashma nuclear power plant developed by the institute passed the acceptance test; In October last year, the radiation-resistant acoustic emission sensor of the Karachi nuclear power plant developed by the institute passed the acceptance test; in July this year, the radiation-resistant acoustic emission sensor passed the acceptance test, and the first demonstration project of 'Hualong No.1' in Fujian Fuqing No. 5, No. 6 Used on the unit leak monitoring system.
