One of the social duties of experts investigating on risk is the participation in risk communication, which bridges between science and society. Based on the present conditions of the risk communication about the radiation after the Fukushima nuclear power plant accident, I summarized the requirements of the risk experts that the communities may hope to communicate with, and introduce the national provisional plans to promote the risk communication. In addition, I discuss about the improvement of the Risk Manager Authorization System, which is to train and qualify those human resources by The Society for Risk Analysis, Japan.

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Risk spread over society has been well recognized after the Great East Japan Earthquake 3.11, 2011 and severe accident of The Fukushima Daiichi Nuclear Power Plant. Since then the role of risk manager has been expected very much. Hereupon referring to Japan Risk Managers' Network (JRMN), a voluntary action group among risk managers accredited by the Society for Risk Analysis Japan (SRA-J), I will consider social role and a view of risk manager's action.

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Lectures on risk usually focuses on one specific kind of risk, depending on the specialty of the lecturer or the organizer. As a result, audience tend to understand risk in a specific manner and they do not know other ways of dealing with risk. In reality, not only ways, but also terminology to assess and manage risks are different between disciplines, such as food, chemical, mechanical, natural disaster, and business. I tried to have a lecture on cross-cutting risk issues, focusing on the common and different terminology and methods of risk assessment and management. I took mechanical, natural disaster, food, and chemical field as representative areas of risk analysis.

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Most people in Japan consider that the structural safety level of building is specified by the law and it is not their matters to be decided. Safety standards in various fields are also regulated by the authority but a building is a unique product and the design load event for the safety is very rare in years of life. Since many uncertain factors are involved in the structural safety, professional engineers' involvements are necessary to maintain the safety quality. Current regulatory specifications based on the building standard law are very rigid and complex but they are minimum requirements. The safety level should be decided based on the consensus of stakeholders with sufficient supports of professionals by applying rational technical standards.

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In this paper, I offered an interpretation of the importance of the acquisition of risk literacy for the public. First, previous studies about risk literacy and definitions were reviewed, and then a definition of risk literacy was presented for the present article. Next, characteristics of risk perception among the public and the concepts of paradox of risk perception and trade-off thinking were explained. The importance of understanding these characteristics and concepts and thinking about risk based on them was stated. Then, I referred to the important role that education (specifically in schools) should play in the acquisition of risk literacy.

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The IPCC Fifth Assessment Report further elucidates the impacts and seriousness of climate change and shows that negative impacts will be even more severe unless immediate actions are taken. Anthropogenic CO₂ emissions are the main cause of climate change. Iron and steel are among the most carbon-intensive materials, produced in a small number of countries, and traded globally. International climate negotiations often focus on country-by-country targets and evaluations. Country-based measures are not a silver bullet, however, because production is often not just for a country's own consumption, but also for other countries; also, scrap steel, which can help reduce CO₂ emissions from steel production, is often in limited supply in countries experiencing rapid growth in the economy, and thus in demand for steel as well. The development of effective climate measures therefore requires integrated consideration of both supply and demand of carbon-intensive materials.

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This study examined the impacts of the Fukushima Nuclear Power Plant accident on the public acceptance of siting a disposal facility of high level radioactive waste (HLW). We applied the social acceptance model to predict public acceptance of investigation for siting of a geological disposal facility of HLW. 1930 Japanese people completed longitudinal internet surveys that were measured before the Fukushima Nuclear Power Plant accident (in February, 2011) and after the accident (in February, 2012). Results indicated that the level of public acceptance of investigation for siting of a geological disposal facility decreased after the accident. Intergenerational subjective norm, social benefit and procedural fairness determined public acceptance consistently before and after the accident. However, the perceptions of stigma and intergenerational subjective norm became more salient after the accident. Our results show that the Fukushima nuclear accident reminds people of ethical problems of acceptance of a geological disposal facility of HLW.

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The Great East Japan Earthquake on March 11, 2011 has catastrophic impacts on Japan. Japan is currently on the way to recovery. However, as the damage on the country as well as society is so serious, Japanese society is urged to change some systems including hazard management, energy policy, information systems and city planning. These changes are accompanied with social group realignments, thus necessarily followed by various risks. To cope with these risk issues, SRA-Japan established the special research committee for the Great East Japan Earthquake. The aim of the committee is, from viewpoints of risk analysts, to create and relate messages about risk issues in 2–3 years, in ten years and in thirty years from the earthquake. To do this, the committee garners SRA-Japan members' opinions about possible risks in Japan by using Delphi method. A preliminary survey was operated in 2011. This paper shows the results summarized by using KJ method.

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