Research On Technology Readiness Assessment And Method Of Core Operation State Monitor

Nuclear power uses the heat energy released by nuclear fission in the nuclear reactor to generate electricity,which has the characteristics of clean,efficient,safe and stable,and good economy.China is opening the road of safe,efficient and high-quality development of the nuclear energy industry.Through continuous monitoring and analysis of core temperature,neutron flux distribution and other parameters,the core operation state monitor can obtain the power distribution and operation state information of the reactor core in real time and accurately,and provide data for the reactor operator to operate the reactor,It is an important guarantee for the safety,reliability,stability and economic operation of nuclear power plant.Because of many production links,many controlled quantities,complex models,the design,production and assembly requirements of the core state monitor are strict.In the process of project development,it is easy to cause the characteristics of long development cycle,high technical difficulty,large investment and high risk.The introduction of technology maturity evaluation in the process of project development is of great significance to the development process and risk reduction of the whole system.This paper is devoted to the evaluation of core operation state monitor technology maturity,focusing on the evaluation process and method system in practical application.The main achievements are as follows:1.In view of the shortcomings of traditional crucial technology element recognition process,such as strong subjectivity,long time consuming and low recognition accuracy,the quantitative analysis method is used to identify crucial technology elements.Firstly,according to the risk in the criterion,the whole system had been divided into agreed levels,and the bottom modules had been selected to carry out FMEA one by one.Combined with the hazard analysis(CA),the risk weight of each module were obtained quantitatively.Secondly,have selectted experts to evaluate the importance of each module by fuzzy AHP,and getted the weight of importance.The risk weight and importance weight were combined to get the final weight,so as to screen out the crucial technology elements.2.In view of the general maturity level criteria,the objectives and requirements of the monitor system are not accurately described.This article combines the project objectives and characteristics of the core operating state monitor,with reference to the definition of foreign technology maturity levels and China’s maturity level division standards.The three aspects of manufacturing factors and management factors have been described the development status of different levels of technical units,explored and formulated evaluation rules,and clarified the target conditions that each level should achieve.3.By comparred the advantages and disadvantages of several system maturity calculation models,aimed at ignoring the integration relationship between technologies in the system or the influence degree of technology elements in the system,a system maturity level calculation method based on technology maturity level of crucial technology elements,integration maturity,expert weight and weight of crucial technology elements had been proposed.