| The high level liquid waste(HLLW)has the characteristics of high radiation dose,high toxicity,large heat release,corrosiveness,and long radionuc lide half-life.It is highly harmful,difficult to manage,handle difficult and expensive.The related work has always been an important topic for nuclear research at domestic and foreign for a long time.Our country has selected the vitrification ceramic melter technology for processing HLLW.Based on more than 40 years of research,it has entered the engineering verification stage since the 21 st century.Therefore,whether the ceramic melter can be smoothly starting on time has become the key to the succes s of the entire project.Therefore,it is also related to whether our country’s nuclear fuel cycle system can smoothly realize the closed loop of HLLW treatment.Therefore,a risk analys is system is designed to analyze the start-up risk of ceramic electric melter,and the relevant results are obtained through calculation and verification.According to the conclusions drawn by the analys is system,different control measures are adopted to reduce the possible losses caused by the occurrence of risks,and to ensure that the ceramic melter starts and fire-rise smoothly.This paper uses a combination of theoretical research and empirical research,based on the analysis of the HLLW vitrification ceramic melter technology,and conducts research on the related system,technical conditions and start-up process of the ceramic melter.The related risks of designing ceramic melter start-up are drawn.By consulting the literature and investigating related materials,learning from foreign comprehensive risk management theories,we have chosen to use the analytic hierarchy process and fuzzy mathematics theory as the basis and designed an analysis system of the start-up risk of ceramic melter,established a mathematical judgment model to convert qualitative judgment and analys is into quantitative calculation results,so as to obtain various risks and risk sizes of HLLW vitrification ceramic melter before starting,so that risk treatment and response is more scientific and operable.It solves the reality that the risk management cannot be quantitatively analyzed in the previous major nuclear chemical general contracting projects.The conclusions include:(1)The overall risk of ceramic Melter start-up is 0.391,which is at a moderate risk,the procurement risk is 0.532,is a high probability of occurrence;(2)The occurrence of procurement risks and the consequences of the risks are controlled by adopting different risk response strategies,The data obtained has been verified by project practice,which shows that the risk analys is system is effective and reliable,and finally reached the result of ensuring that the ceramic melter fire-rise smoothly was planned. |
