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Journal Articles

Ten years since the Fukushima Daiichi NPP disaster; What's important when protecting the population from a multifaceted technological disaster

Callen-Kovtunova, J.*; Homma, Toshimitsu

International Journal of Disaster Risk Reduction (Internet), 70, p.102746_1 - 102746_10, 2022/02

 Times Cited Count:1 Percentile:83.47(Geosciences, Multidisciplinary)

This paper presents key lessons on protecting the public during an emergency at a nuclear power plant (NPP) that have been identified from the accident at the Fukushima Daiichi NPP. The paper describes what emergency arrangements were in place prior to the accident, what occurred during the emergency and then the ascertained lesson. The paper highlights the failings of dose project models, emphasizes several lessons identified from past emergencies, such as the importance of predetermined criteria and emergency zones for determining protective actions. It also presents an essential lesson previously overlooked: the need for arrangements to ensure the safe evacuation of patients from hospitals and care homes.

Journal Articles

Challenges for enhancing Fukushima environmental resilience, 2; Features of radionuclide release and deposition with accident progress

Saito, Kimiaki; Nagai, Haruyasu; Kinase, Sakae; Takemiya, Hiroshi

Nihon Genshiryoku Gakkai-Shi ATOMO$$Sigma$$, 59(6), p.40 - 44, 2017/06

no abstracts in English

JAEA Reports

Estimation methods of blood boron concentration and error evaluation during boron neutron capture therapy for malignant brain tumor

Shibata, Yasushi*; Yamamoto, Kazuyoshi; Matsumura, Akira*; Yamamoto, Tetsuya*; Hori, Naohiko; Kishi, Toshiaki; Kumada, Hiroaki; Akutsu, Hiroyoshi*; Yasuda, Susumu*; Nakai, Kei*; et al.

JAERI-Research 2005-009, 41 Pages, 2005/03

JAERI-Research-2005-009.pdf:1.99MB

The measurement of neutron flux and boron concentration in the blood during medical irradiation is indispensable in order to evaluate the radiation in boron neutron capture therapy. It is, however, difficult to measure the blood boron concentration during neutron irradiation because access to the patient is limited. Therefore we prospectively investigated the predictability of blood boron concentrations using the data obtained at the first craniotomy after infusion of a low dosage of BSH. When the test could not be carried out, the blood boron concentration during irradiation was also predicted by using the 2-compartment model. If the final boron concentration after the end of the infusion is within 95% confidence interval of the prediction, direct prediction from biexponential fit will reduce the error of blood boron concentrations during irradiation to around 6%. If the final boron concentration at 6 or 9 hours after the end of infusion is out of 95% confidence interval of the prediction, proportional adjustment will reduce error and expected error after adjustment to around 12%.

Oral presentation

About the situation of decontamination and the future

Yamashita, Takuya

no journal, , 

JAEA has been conducting decontamination simulations and calculating the future air dose rates for the purpose of providing information to the government and local governments that are in the process of reconstruction. The restoration support system for environment "RESET" is used for decontamination simulation, and "two component model of air dose rate attenuation" is used for prediction of future air dose rate after decontamination. Since the "two-component model of air dose rate attenuation" has not been sufficiently confirmed for the measurement data after decontamination, the applicability to the area after decontamination was verified. Since the prediction by the two-component model has good agreement with the measured air dose rate after the decontamination model demonstration project conducted by the Ministry of the Environment and the variation of the parameters, it is judged that there is no problem in applying to prediction.

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