核能与核安全(英文版)课件.ppt

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1、Nuclear energy and nuclear safetyYOUR SITE HEREYOUR SITE HEREThe main contentThe main content 1、What is nuclear energy 2、Use of nuclear energy 3、All of the nuclear concerns 4、Advantages of nuclear energy 5、The current nuclear security measures 6、The conclusions 7、References Nuclear energy is release

2、d from the nucleus through the conversion of its quality.1 1、What is nuclear energyWhat is nuclear energy Nuclear reactions may be induced by bombardment with a wide variety of particles.Chain reactionChain reactionYOUR SITE HEREYOUR SITE HERE Ways of developing nuclear energy have two:one is the fi

3、ssion of heavy elements,such as the fission of uraniumUranium oreUranium oreFissionFission the other is the fusion of light elements,such as deuterium,tritium,and so onFusionFusion Fission of heavy elements techniques,have been practical application,And light elements in fusion technology,is also be

4、ing actively developed.Tokamak Human reality uses of nuclear energy began in the war.2 2、Use of nuclear energyUse of nuclear energylittle boylittle boyYOUR SITE HEREYOUR SITE HERE China also have our own nuclear bombs,hydrogen bombs,nuclear submarines.The human development and utilization of nuclear

5、 energy is mainly developed nuclear power,relative to other forms of energy,nuclear energy has distinct advantages.In 1954,the former Soviet Union built an experimental nuclear power station;in 1957,the United States had successfully built nuclear power plant.The world nuclear power distribution In

6、the 30 countries that now have nuclear power,the proportion of nuclear power changes greatly.Up to 80 percent from France,Belgium 52,South Korea 39,Switzerland 37,Japan 29,United States 20,South Africa 4 and China 2.Besides radiotherapy is one of the applications of nuclear energy.Nuclear magnetic r

7、esonance equipmentNuclear magnetic resonance equipment We ordinary people know about nuclear power plant is basically negative.Biggest problem is the concern that nuclear power plants vulnerable to security issues.3 3、All of the nuclear concernsAll of the nuclear concerns The Soviet Union in 1986 of

8、 the Chernobyl Nuclear Power Plant Accident,Japans Fukushima nuclear power plant accident in 2011,had increased peoples worries.Chernobyl Chernobyl FukushimaFukushima Nuclear power is concentrated,clean,safe and economical energy.4 4、Advantages of nuclear energy Advantages of nuclear energy Dayawan

9、nuclear power plant French special Likasitan Dayawan nuclear power plant French special Likasitan nuclear power plantnuclear power plant 1818可可编辑 First,nuclear energy is a high concentrated energy,especially suitable for lack of conventional energy sources and electricity-starved region,not limited

10、by fuel for transport。As Chinas southeast and south region.1kg U =1kg U =2700 tons of coal2700 tons of coal Meanwhile,nuclear power is clean energy and to protect the environment.Nuclear power generation unlike fossil fuel power plants that emit huge amounts of pollutants into the atmosphere.And aft

11、er decades of development and improvement of nuclear energy,nuclear power plants has become one of the security sector.Since first nuclear power station is built,more than 400 nuclear power plants in operation around the world,but they are basically safe and normal in more than 30 years。The conseque

12、nces of the Chernobyl nuclear accident was very serious,but the accident was caused by human factors.The direct cause of the accident was due to mishandling during a test.The root cause of the accident was Tokyo Electric Power Company taking into account economic factors at the beginning of the acci

13、dent，refused to pump water into the reactor core.Until a week later when tried to water the Core，but the time was late because gathered a large amount of heat and radiation eventually caused the explosion.Nuclear energy is the economical energy.Because the fuel cost and the transportation cost is lo

14、w.As the technology is constantly improving and enhancing，nuclear power plant will also continue to lower costs.And nuclear power generation cost less affected by international economic.situation For example,a coal-fired power plants with installed capacity of 1 million kw,coal consumption is 2.5 mi

15、llion tons a year.A nuclear power station of the same size,annual consumes 25 tons of low-enriched uranium.the emissions from wastecarbon dioxidesulfur dioxidenitrogen oxidescoal ash6.5 million tons17,000 tons4,000 tons280,000 tons Nuclear power plants now mainly uses a defense-in-depth strategy,the

16、 first layer of defense is the fuel cladding 5 5、The current nuclear security measuresThe current nuclear security measuresthe fuel claddingthe fuel cladding the second layer of defense is the primary circuit pressure boundaryprimary circuit Pressure boundaryprimary circuit Pressure boundary the thi

17、rd layer of defense is the containment.containmentcontainmentSteel,Steel,40m,H 60m 40m,H 60m In accordance with the method of determining theory and probability theory,personal risks of nuclear power plants is:Every 100 years due to reactor accidents killed 4 people,far below the traffic accident,fi

18、re,air crash,the Tornados.Science has shown that nuclear power on the public health impact is far less than many health risks encountered in daily life.Around the nuclear power plant50micro West/yearX ray detection600 micro West/timeFlights to and from New York200 micro West/timeComparison of radiat

19、ionComparison of radiation Its like,Every coin has two sides.As the one hand:The development and use of nuclear energy will bring great benefits to ecological resources,environmental protection,social life and economic development.on the other hand:There are also a potential threat to human security

20、.6 6、The conclusionsThe conclusions We should start from the point of sustainable and rational development of nuclear industry,to find a new way of clean energy for the world.Feng Xiao,nuclear energy and technology for economic,technical management of land resources,2008-8-15 Peng Hong,human security calls for nuclear rational,Journal of South China University,2007-6-15Bao Yunqiao,miracle in the atomic age,Beijing:Popular Science Press,1987 On Luo G,the concept of radioactive waste,the IAEA press,2003 7 7、References References LOGOLOGOYOUR SITE HERE Thank youThank you！3535可可编辑