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Nuclear Radiation – friend or enemy? Its safety and its benefits at low levels justify its wider acceptance for improved public health and economic prosperityA Worldwide group of Scientists for the Public Understanding of Radiation (SPUR)Health Effects of Radiation Exposure

The health and economic prosperity of the human race depend on applications of science in engineering and medicine, and these have involved the outer (or electronic) part of atoms. Use of the inner (or nuclear) part has raised public and political apprehension when used for energy production but less so when used for human health e.g. following the legacy of Marie Curie. The cause of this concern is historical and cultural with no basis in science.

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Lessons learned from the Fukushima Daiichi Nuclear Power Plant Accident(PDF)Tadashi NarabayashiAssessment of Nuclear Energy

Many lessons can be learned from the Fukushima Daiichi Nuclear Power Plant accident. First, if an isolation condenser (IC) continues to operate, the accident would be terminated soon. A reactor core isolation cooling (RCIC) steam turbine also stopped due to loss of battery power in Unit #2 and #3. suppression pool (S/P) temperature and pressure were so high that the accident management water injection took took too long time. After the loss of ECCS and IC core cooling, Containment Vessel pressure increased. Hydrogen explosion occurred after venting. The analysis results show that the depressurization of the reactor pressure vessel (RPV) started before RPV bottom failure. It is hoped that the lessons learned from this accident will help to improve the safety of nuclear power plants worldwide.

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“Japan’s zero-nuclear dream”the Washington PostAssessment of Nuclear Energy

Editorial column, on September 17th. It views zero-nuclear negatively and as a “dream”.

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“Noda’s nuclear phase-out is decisive – but not final”Financial TimesAssessment of Nuclear Energy

Its editorial column of September 17th . It evaluates this policy as decisive, though its handling may change with future change of government, an economical argument and so on.

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The Fukushima Accident and the NAIIC ReportWade AllisonAssessment of Nuclear Energy

Low or moderate radiation doses and dose rates are harmless, but the public health effects of a misunderstood accident like the one at Fukushima are dangerous, to individuals and to the society and economy at large. Perceptions of the health threat posed by the released radioactivity have been magnified by overly cautious international "safety" standards. The consequential collapse of confidence and widespread fear are unrelated to the physical effect of the radiation on human life. Contrary to the view expressed by the recent NAIIC Report this is a significant international problem, not a purely national Japanese one.

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Bulletin of the Atomic Scientists Special issue: Low-level radiation risks, May/June 2012Bulletin of the Atomic ScientistsHealth Effects of Radiation Exposure

Famous American website ”Bulletin of the Atomic Scientists” reports Low-level radiation risks.

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America’s Energy FutureAmerican Energy Innovation CouncilOpinions on Energy Policy

It expects for innovation and technology development in the field of clean energy with the support of federal government.

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Public Trust in Nuclear EnergyWade AllisonAssessment of Nuclear Energy

He points out that excessive fear for nuclear power had spread under the Cold War structure and emphasizes the necessity to face radiation rationally.

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ICRP Publication 111“Application of the Commission’s Recommendations to the Protection of People Living in Long-term Contaminated Areas After a Nuclear Accident or Radiation Emergency”ICRPHealth Effects of Radiation Exposure

This was published in 2008, and is a guideline for radioactivity protections for nuclear disasters.

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Organizations under Large Uncertainty: An Analysis of the Fukushima CatastropheMasahiko Aoki and Geoffrey Rothwell (STANFORD INSTITUTE FOR ECONOMIC POLICY RESEARCH)Opinions on Energy Policy

[ABSTRACT] This paper analyzes the impacts of the March 11, 2011, earthquake and tsunami at the Fukushima nuclear power plant in Japan, which were amplified by a failure of coordination across the plant, corporate, industrial, and regulatory levels, resulting in a nuclear catastrophe comparable in cost to Chernobyl. It derives generic lessons for industrial structure and regulatory frame for the electric power industry by identifying the two shortcomings of a horizontal coordination mechanism: instability under large shocks and the lack of “defense in depth." The suggested policy response is to harness the power of “open-interface-rule-based modularity" by creating an independent nuclear safety commission and an independent system operator owning the transmission grid module in Japan. We propose a transitory price mechanism that can restrain price volatility while providing investment incentives.

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Power Generation Costs and Economic Efficiency of Nuclear Power GenerationGEPR Editorial staffsAnalysis of Energy Industry

[SUMMARY] We made a quick review of electricity generating costs by major power sources and nuclear power economics. A balance of fixed costs and variable costs makes economic assessment more complex. Building new nuclear power plants is getting more difficult in advanced countries because of higher initial costs and higher risks, therefore, small modular reactors (SMRs) are the focus of feasible nuclear reactors in the future.

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"Effect of Recent Changes in Atomic Bomb Survivor Dosimetry on Cancer Mortality Risk Estimates” (2004) The Radiation Effects Research Foundation (Hiroshima)Health Effects of Radiation Exposure

This article is to verify the possibility of health damage caused by low-dose exposure, using the follow up data of Hiroshima and Nagasaki survivors from atomic bombs. With the exposure to 200 millisieverts (mSv) or more, the risks of leukemia and solid cancer increases. Meanwhile, the relationship is not clear between low-dose exposure to less than 200 mSv and its effect on human health. We will make a commentary about this article soon.

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Risks of Nuclear Power Generation and Reassessment of Its Economic EfficiencyNobuo IkedaOpinions on Energy Policy

Since the explosion at the Fukushima Daiichi Nuclear Power Plant owned by the Tokyo Electronic Power Company (TEPCO) occurred concurrently with the Great East Japan Earthquake which brought about more than twenty thousand deaths on March 11th 2011, giving the impression that it was a massive accident. However, no one has yet been reported to have died from radiation; two workers lost their lives in the basement of the nuclear power plant as a result of the tsunami, but no one has been exposed to a fatal dose of radiation. Why has this nuclear power plant accident become such a major issue? And why is there a view that TEPCO is likely to collapse?

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The Linear No-Threshold Relationship Is Inconsistent with Radiation Biologic and Experimental DataMaurice Tubiana, MD, Ludwig E. Feinendegen, MD, Chichuan Yang, MD and Joseph M. Kaminski, MDHealth Effects of Radiation Exposure

The carcinogenic risk induced by low doses of ionizing radiation is controversial. It cannot be assessed with epidemiologic methods alone because at low doses the data are imprecise and often conflicting. Since the 1970s, the radiation protection community has estimated the risk of low doses by means of extrapolation from the risk assessed at high doses, generally by using the linear no-threshold (LNT) model.

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Health Effects of Radiation on Human Health ― a review of academic articlesGEPR Editorial staffsHealth Effects of Radiation Exposure

[SUMMARY] We made a quick review of academic articles that assess (ionizing) radiation effects on human health. The Hiroshima and Nagasaki atomic bomb survivors’ life span study (LSS) has been the most renowned and comprehensive data source. The Radiation Effects Research Foundation (RERF, Hiroshima), which has been conducting this study, applied a linear dose response model based on the "Linear No Threshold (LNT)” model, and it has been the biggest basis of the International Commission of Radiological Protection (ICRP)’s recommendations. However, the effects of a low dose (less than 100mSv) are not statistically significant and there have been a lot of biological studies that advocate that low dose radiation risks are less than those induced by the LNT model.

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Is Fukushima Dangerous? -- Distorted images of Japan - Morley Robertson × Nobuo Ikeda

What's happen? What was the cause in Fukushima? Morley Robertson, writer and DJ, talk about distorted images of Japan after Fukushima nuclear plant accident with Nobuo Ikeda.

21st Century Energy Challenges

At the ARPA-E 2012 summit, Bill Gates and U.S. Energy Secretary Steven Chu discussed the largest energy challenges of the 21st century in the U.S. and around the world.

A Web-TV Program "Is radiation really so harmful? Considering risks of nuclear power generation" (Japanese only)

Agora Institute, who operates GEPR, broadcasted a Web-TV program "Is radiation really so harmful? Considering risks of nuclear power generation" on internet video streaming channel "Niconico Live " on January 19th (in Japanese only) . Nobuo Ikeda, President of Agora Incorporated, and three experts on radiation, risk analysis, and energy policy discussed about the situations after Fukushima nuclear accident. Their opinions were consistent that potentiality of health damage caused by the Fukushima accident is very small. GEPR will provide a summary about this program soon.


Agora Inc., who operates GEPR, releases a podcast program which was originally aired on Jan. 19th, 2012on internet video streaming channel "Nico-nico Live"; "Is radiation really so harmful? Considering risks of nuclear power generation" (Japanese only) The panel: Nobuo Ikeda, Akihiro Sawa, Jun Takada, and Hiroyuki Matsuda