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Post Reply Close Saving..... Edit Comment Close By: pinakn58 (32 month(s) ago) i lik dis ppt. of nuclear radiation.... so can i pls download.....??? Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Slide 1: Strong energy waves which can finish everything.!! Impact Of Nuclear Radiations. Slide 2: This presentation is designed to explain the negative effects caused by the use of and production of nuclear energy. It takes you through the cradle to grave lifecycle of nuclear energy, paying particular attention to the social, environmental, and public health impacts of the processes associated with nuclear energy. Objective Slide 3: What is nuclear radiation? Radiation is really nothing more than the emission of energy waves through space, as well as through physical objects. Usually these energy waves are electromagnetic radiation which are classified into :- Radio waves Infrared waves Gamma rays Slide 4: Cosmic rays X-ray Visible light Ultraviolet waves Slide 5: Penetration Of Radioactive Particles Slide 6: Typically keV or MeV Each radionuclide emits characteristic energy Energy Units For Measuring Slide 7: Radiation Effect Overexposure to these radiations, can alter the DNA of animals by the ionizing effect, it produces. If the rate of ionization is significantly large, it can result in permanent damage of the tissues. Sunburn, melanoma or different types of cancers are caused by overexposure to nuclear radiations from the Sun or nuclear tragedies. Kinetic energy released due to the highly penetrating shock waves generated by a nuclear explosion , triggers a thermal radiation. Burns, are the most immediate and primary effects of these radiations. Slide 8: Brief History Nuclear energy was first discovered in 1934 by Enrico Fermi. The first nuclear bombs were built in 1945 as a result of the infamous Manhattan Project. The first plutonium bomb, code-named Trinity, was detonated on July 16, 1945 in New Mexico. On August 6th 1945 the first uranium bomb was detonated over Hiroshima. Three days later a plutonium bomb was dropped on Nagasaki. There is over 200,000 deaths associated with these detonations. Electricity wasn’t produced with nuclear energy until 1951. Slide 9: Nuclear Fuel Cycle. The nuclear fuel cycle is the series of industrial processes which involve the production of electricity from uranium in nuclear power reactors. fuel is used once and then sent to storage without further processing save additional packaging to provide for better isolation from the biosphere. Slide 10: Radioactive waste is highly dangerous to humans and the environment. Because the waste will remain radioactive for so long, it will remain to be a threat for thousands of years. Impacts Community Impacts Health Impacts Environmental Impacts Slide 11: Health Impacts Thirty people died in direct relation to the accident. They were the workers in the plant and the people who assisted in the cleanup. Approximately 2,500 additional deaths were related to the accident. Since the accident rates of Thyroid cancer has risen significantly. The rate of thyroid cancer in children 15 years and younger increase from 4 to 6 per million to 45 per million in the Ukraine region between 1986 to 1997 (compared to 1981 to 1985). 64% of these cases were in the most contaminated regions. Damage to DNA : Damage to DNA Delayed division Inaccurate division Failure to divide Acute radiation syndrome : Acute radiation syndrome Treatment & supportive care Platelet transfusion Psychological support Infection control Stimulation of hematopoietic system Slide 14: 116,000 people were evacuated from 1990 to 1995 and 210,000 were resettled. Major infrastructure had to be rebuilt. There was also a shortage of electricity. Agricultural activities had to be reduced, which lead to a reduction in income. Community Impact Slide 15: Radioactive fall out spread throughout the Ukraine and Europe, and eventually the whole northern hemisphere. In the local ecosystem (10 km radius) coniferous tress and small mammals died. The natural environment is recovering but there may be long-term genetic effects. Environmental Impacts Pollution… Slide 16: There four different kinds of waste: High-level (spent fuel and plutonium waste), transuranic (contaminated tools and clothes), low and mixed low-level (hazardous waste from hospitals), and uranium mill tailings. In the US there is approximately 91 million gallons of high-level waste, 11.3 million cubic feet of transuranic waste, 472 million cubic feet of low and mixed low level waste, and 265 million tons of uranium tailings. Nuclear waste Case Reports on HIROSHIMA & NAGASAKI : Case Reports on HIROSHIMA & NAGASAKI Slide 18: HIROSHIMA Before After Case Report Of HIROSHIMA : Case Report Of HIROSHIMA At 2:45 a.m. on Monday, August 6, 1945, a B-29 bomber, the Enola Gay, took off from Tinian, On a hook in the ceiling of the plane, hung the ten-foot atomic bomb, "Little Boy." "Little Boy" was created using uranium-235, a radioactive isotope of uranium. On August 6, 1945, the first choice target, Hiroshima, was having clear weather. At 8:15 a.m. (local time), the Enola Gay's door sprang open and dropped "Little Boy." The bomb exploded 1,900 feet above the city and only missed the target, the Aioi Bridge, by approximately 800 feet. This atomic bomb, the equivalent of 20,000 tons of TNT, flattened the city, killing tens of thousands of civilians. While Japan was still trying to comprehend this devastation three days later, the United States struck again, this time, on Nagasaki. Slide 20: NAGASAKI Before After Case Report Of NAGASAKI : Case Report Of NAGASAKI “Fat Man” was dropped three days later on Nagasaki killing approximately 70,000 people. Entire families were wiped out. The effects of the radiation caused birth defects in some of the survivors’ children, while others could no longer have babies. The physical, psychological, and environmental impacts of these atrocities can hardly be put into words. Slide 22: Overall, nuclear energy disproportionately effects rural communities and the communities near nuclear facilities. Uranium mining and bombing are particularly detrimental to the environment. Further, the effects of radiation (cancer, illness, and death) are significant. If you find yourself in a situation where you are being exposed to radiation, shield yourself from the blast, and then move as far away from the detonation area as possible (otherwise remain indoors). Conclusion Slide 23: Presented by: Jyotika khanna Niharika khera & 10th B You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.