The VR Simulation for Spent Fuel Reprocessing

2008 ◽  
Author(s):  
Bo Zhu ◽  
Yanhua Yang
Keyword(s):  
Nuclear Power ◽  
Spent Fuel ◽  
Nuclear Power Reactor ◽  
Operation Process ◽  
Fast Development ◽  
Spent Fuel Reprocessing ◽  
Visualization Technology ◽  
Near Future ◽  
And Training ◽  
Fuel Reprocessing

The spent fuel disposal is a very important step during the recycling of nuclear fuel and the operation process is very complex and dangerous. With the fast development of nuclear power reactor in china, more and more spent fuel will occur and should be treated in the near future. For researching the spent fuel management and training the operators, we have been developing the virtual reality (VR) Simulation System for spent fuel reprocessing (VRSS) aimed at demonstrating and analyzing the treatment process. The VRSS is based the VR and visualization technology. Combined with the regulation of radiation protection, the integrated virtual operate environment is developed to enable user navigation the working place, and obtain target information “it can demonstrate the structure and component of equipment, it also can illustrate the disassembly craft transform principle and the operation way of extraction facility. It even can prompt the user how to operate when spent fuel handling accident occur.

The Development and Innovation of Spent Fuel Reprocessing in Fuel Cycle

2010 ◽  
Author(s):  
Guang Jun Chen ◽  
Yu Lin Cui ◽  
Guo Guo Zhang ◽  
Hong Jun Yao
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Fuel Cycle ◽  
Fission Products ◽  
Purex Process ◽  
Spent Fuel ◽  
Spent Fuel Reprocessing ◽  
Long Life ◽  
Fuel Reprocessing

With an increased population and an increasing demand for power, nuclear power has attracted an increasing attention and mass nuclear power plant have been built in different countries in the past several decades. At present, about ten thousands ton spent fuels are discharged from nuclear power plant every year and the estimated capacity will approximately add up to 5×105 ton. Therefore, spent fuel reprocessing, by which the co-extraction and separation as well as purification of Uranium and Plutonium could be realized and ensure the recycle of uranium resources and the management of nuclear waste, is a vital step in nuclear fuel cycle including two major strategies, i.e. once-through cycle and closed fuel cycle. It is worth noting that the utilization of MOX fuel made by plutonium mixed with uranium has been successfully achieved in thermal reactor. Fortunately, the middle experiment plant of china spent fuel reprocessing has been being debugged and will be operated completely in future two years. Various reprocessing schemes have been proposed for the extraction of actinides from fission products and other elements presented in spent nuclear fuel. However, after numerous studies of alternate reprocessing methods and intensive searches for better solvents, the PUREX process remains the prime reprocessing method for spent nuclear fuels throughout the world. High burning and strong radioactive spent fuel resulting from the evolution of various reactors drive the development of the advanced PUREX technology, which emphasizes the separation of neptunium and technetium besides the separation of the Uranium and Plutonium from the majority of highly active fission products. In addition, through Partitioning and Transmutation method, some benefits such as segregating the actinides and long life fission products from the high level waste can be obtained. The GANEX process exploited by CEA, which roots in COEX process belonged to advanced PUREX process, considers the separation of the actinides and long life fission products. The study on the pyro-chemical processing such as the method of electro-deposition from molten salts has still not replaced the traditional PUREX process due to various reasons. In conclusion, the future PUREX process will focus on the modified process including predigesting the technical flowsheets and reducing reprocessing costs and using salt-less reagent in order to minimize the waste production.

Distribution of Palladium During Spent Fuel Reprocessing

2003 ◽  
Author(s):  
Yu. Pokhitonov ◽  
V. Romanovski ◽  
P. Rance
Keyword(s):  
Nuclear Fuel ◽  
Nuclear Power ◽  
Spent Nuclear Fuel ◽  
Fission Products ◽  
Platinum Group Metals ◽  
Spent Fuel ◽  
Platinum Metals ◽  
Spent Fuel Reprocessing ◽  
Platinum Group ◽  
Fuel Reprocessing

The principal purpose of spent fuel reprocessing consists in the recovery of the uranium and plutonium and the separation of fission products so as to allow re-use of fissile and fertile isotopes and facilitate disposal of waste elements. Amongst the fission products present in spent nuclear fuel of Nuclear Power Plants (NPPs,) there are considerable quantities of platinum group metals (PGMs): ruthenium, rhodium and palladium. Given current predictions for nuclear power generation, it is predicted that the quantities of palladium to be accumulated by the middle of this century will be comparable with those of the natural sources, and the quantities of rhodium in spent nuclear fuel may even exceed those in natural sources. These facts allow one to consider spent nuclear fuel generated by NPPs as a potential source for creation of a strategic stock of platinum group metals. Despite of a rather strong prediction of growth of palladium consumption, demand for “reactor” palladium in industry should not be expected because it contains a long-lived radioactive isotope 107Pd (half-life 6,5·105 years) and will thus be radioactive for a very considerable period, which, naturally, restricts its possible applications. It is presently difficult to predict all the areas for potential use of “reactor” palladium in the future, but one can envisage that the use of palladium in radwaste reprocessing technology (e.g. immobilization of iodine-129 and trans-plutonium elements) and in the hydrogen energy cycle may play a decisive role in developing the demand for this metal. Realization of platinum metals recovery operation before HLW vitrification will also have one further benefit, namely to simplify the vitrification process, because platinum group metals may in certain circumstances have adverse effects on the vitrification process. The paper will report data on platinum metals (PGM) distribution in spent fuel reprocessing products and the different alternatives of palladium separation flowsheets from HLW are presented. It is shown, that spent fuel dissolution conditions can affect the palladium distribution between solution and insoluble precipitates. The most important factors, which determine the composition and the yield of residues resulting from fuel dissolution, are the temperature and acid concentration. Apparently, a careful selection of fuel dissolution process parameters would make it possible to direct the main part of palladium to the 1st cycle raffinate together with the other fission products. In the authors’ opinion, the development of an efficient technology for palladium recovery requires the conception of a suitable flow-sheet and the choice of optimal regimes of “reactor” palladium recovery concurrently with the resolution of the problem of HLW partitioning when using the same facilities.

Opportunity and Challenge of MOX Fuel Application in China

2013 ◽  
Author(s):  
Rui Li ◽  
Yuemin Zhou
Keyword(s):  
Nuclear Power ◽  
Fuel Cycle ◽  
Economic Effect ◽  
Design Procedure ◽  
Spent Fuel ◽  
Closed Fuel Cycle ◽  
Mox Fuel ◽  
Spent Fuel Reprocessing ◽  
The Government ◽  
Fuel Reprocessing

In this paper, the opportunity and challenge for application of MOX fuel in China are discussed. With the great demand of energy to develop economy of China, the government plans to achieve 58GW installed capacity and 30GW installing capacity in nuclear power before 2020. China needs about 81,306t～102,613t nature Uranium to support the nuclear power developing project at that time. For the obvious reason, China should insist on closed fuel cycle to recover the fissionable materials in the spent fuel. China will build its first spent fuel reprocessing factory to supply MOX fuel to PWRs and FRs. Both government and nuclear companies put more and more enthusiasm into the application of MOX fuel. However, China is also suffered from great challenges of MOX fuel application, such as the spent fuel reprocessing technique roadmap, the manufacture technology of MOX fuel, the modification of PWRs to accommodate the MOX fuel, and the recalculation of nuclear parameters by design procedure. The economic effect of applying MOX fuel is also considered. At last, the prospect of MOX fuel application is predicted in this paper.

Atmospheric release of volatile fission products from operation of nuclear power reactors and spent fuel reprocessing facilities and prospects for extracting the products

1978 ◽  
Vol 44 (2) ◽  
pp. 153-157
Author(s):  
B. Ya. Galkin ◽  
L. I. Gedeonov ◽  
N. N. Demidovich ◽  
R. I. Lyubtsev ◽  
I. V. Petryanov ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Fission Products ◽  
Spent Fuel ◽  
Spent Fuel Reprocessing ◽  
Fuel Reprocessing ◽  
Atmospheric Release

Public Acceptance of Spent Fuel Reprocessing Project

2017 ◽  
Author(s):  
Zijian Wang ◽  
Shanfang Huang ◽  
Xiaoyu Guo ◽  
Kan Wang
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Nuclear Industry ◽  
Spent Fuel ◽  
The Public ◽  
Spent Fuel Reprocessing ◽  
Fuel Reprocessing

At present, there are hundreds of nuclear power plants in operation around the world. Anti-nuclear movements continue in many places, although the nuclear power plants have good operating records. It has some factors, and the first factor that the public knows little about nuclear industry, results in regarding the nuclear power plant mysterious. This condition relates to destructive scene by nuclear weapon with nuclear industry, deeming it unacceptable to take this risk. Secondly, construction of nuclear power plant and off site emergency may occupy large land. The public hopes to be rewarded more to offset the risk by their imagination. Last, it relates to the political environment of one country. Every country has its own situation, so the strategies of developing nuclear power plant are widely different. The public is not familiar with other nuclear engineering projects except nuclear power plants, and hence the boycott happens more frequently. Sino-French cooperation on nuclear fuel cycle project is the first large-scale commercial spent fuel reprocessing plant, which is the biggest cooperative project between China and France until now. AREVA is responsible for technology, and CNNC is responsible for building. Spent fuel reprocessing is the most important part of nuclear fuel cycle back end, which separates uranium and plutonium from spent fuel, and manufactures MOX fuel with recycled resources for using in nuclear reactor again. This will make the best use of the uranium resources. After that process, the fission products needed to be disposed reduce significantly. And it is good for environmental protection. The public protest happened in one of the candidate sites, when CNNC carried out the preliminary work of site selection. For meeting the enormous energy demands, the fossil energy may be exhausted in the future due to the greenhouse gases emission. Chinese government speeds up the development of new energy. Nuclear energy is the only technology with no emission of greenhouse gases and will be rapidly developed. Along with the nuclear power units continuing to increase, they become the critical factors in restricting the sustainable development of nuclear energy. That is efficient utilization of uranium resources, spent fuel intermediate storage, reprocessing, and geologic disposal of high level radioactive waste. To this project, it not only has a great current demand, but also closely relates to transition of energy structure. The public has different views in the project progressing, which results in wide concern and discussion. The article took this event for example, and analyzed the reason from all directions. Besides, the author put forward own views for the public acceptance events about nuclear engineering projects except nuclear power plant.

A review on UREX processes for nuclear spent fuel reprocessing

2020 ◽  
Vol 358 ◽  
pp. 110410 ◽  
Author(s):  
Indu Kumari ◽  
B.V.R. Kumar ◽  
Ashok Khanna
Keyword(s):  
Spent Fuel ◽  
Spent Fuel Reprocessing ◽  
Fuel Reprocessing
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