Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4最新文献_第3页

Estimation of Radionuclide Intakes by Singular Value Decomposition 用奇异值分解法估计放射性核素的摄入量

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J15.017

S. Hato, Sakae Kinase

引用次数: 0

Development of an Organic Iodine Filter for Filtered Containment Venting Systems of Nuclear Power Plants 核电厂过滤式安全壳排气系统用有机碘过滤器的研制

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J15.025

S. Kawamura, Takeo Kimura, Fumitoshi Watanabe, K. Hirao, T. Narabayashi

引用次数: 5

Treatment of Water Contaminated with Radiocesium Using Novel Complexes between Prussian-Blue and Bivalent Transition Metal Hydroxides 新型普鲁士蓝与二价过渡金属氢氧化物配合物处理放射性铯污染水

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J14.008

H. Ubara, Eiji Yuki, K. Tsukiyama, Masato Kamizawa, Koichi Senoh, K. Ohta, F. Shimamoto, Nariyuki Ohta

{"title":"Treatment of Water Contaminated with Radiocesium Using Novel Complexes between Prussian-Blue and Bivalent Transition Metal Hydroxides","authors":"H. Ubara, Eiji Yuki, K. Tsukiyama, Masato Kamizawa, Koichi Senoh, K. Ohta, F. Shimamoto, Nariyuki Ohta","doi":"10.3327/TAESJ.J14.008","DOIUrl":"https://doi.org/10.3327/TAESJ.J14.008","url":null,"abstract":"A variety of technologies are applied to the decontamination of radiocesium from water using inorganic adsorbents such as zeolites, Prussian blue (PB) and its analogues. However, these adsorbents are di‹cult to apply. Although zeolites work as good adsorbents for cesium (Cs) in freshwater, their adsorption ability is extremely low in seawater and ‰y ash extracts with a high salt concentration. In contrast, PB and its analogues maintain their selective adsorption ability for Cs even in water containing salts, but a high level of cyan remains in the treated water. In this study, we introduce a new technology that utilizes complexes between PB and hydroxides of transition metals (PBX) for the decontamination of Cs from water and report results of demonstration tests on simulated seawater and ‰y ash extract. Furthermore, the excellent results of the PBX method applied to the extracts from ‰y ash contaminated with radiocesium (more than 8000 Bq/kg) are also shown. It has been proved that radiocesium activities are not only below the detection limit (<10 Bq/kg) and the content of cyan can be controlled under the regulation value of tap water in the water treated with PBX.","PeriodicalId":121793,"journal":{"name":"Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4","volume":"48 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130756262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of Averted Doses to Infants by Tap Water Restrictions after the Fukushima Daiichi Nuclear Power Plant Accident 福岛第一核电站事故后自来水限制对婴儿避免剂量的评估

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J11.008

Sakae Kinase, M. Kimura, S. Takahara, T. Homma

引用次数: 0

Long-Term Outlook for Global Natural Uranium and Uranium Enrichment Supply and Demand Situations after the Impact of Fukushima Daiichi Nuclear Power Plant Accident 福岛第一核电站事故后全球天然铀及铀浓缩供需形势的长期展望

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J12.012

Yuhji Matsuo, T. Murakami

{"title":"Long-Term Outlook for Global Natural Uranium and Uranium Enrichment Supply and Demand Situations after the Impact of Fukushima Daiichi Nuclear Power Plant Accident","authors":"Yuhji Matsuo, T. Murakami","doi":"10.3327/TAESJ.J12.012","DOIUrl":"https://doi.org/10.3327/TAESJ.J12.012","url":null,"abstract":"In this paper, the authors propose long-term projections of global nuclear power generation, uranium production, and uranium enrichment capacities by region, and estimate the trade ‰ows of natural uranium and uranium enrichment activities in 2020 and 2035. In spite of the rapid nuclear power generation capacity growth expected especially in Asia, the natural uranium and uranium enrichment trade will not be tightened by 2020 due to the projected increase in both natural uranium production and uranium enrichment capacities, which may cause a drop in natural uranium and uranium enrichment prices. Thus, there is a great possibility that the current projects for capacity expansion will be delayed considerably. However, in the ``highdemand scenario'', where nuclear expansion will be accelerated due to growing concerns about global warming and energy security issues, additional investments in uranium production and enrichment facilities will be needed by 2035. In Asia, the self-su‹ciency ratio for both natural uranium supply and uranium enrichment activities will remain relatively low until 2035. However, the Herˆndahl-Hirschman (HH) index of natural uranium and uranium enrichment activity trade to Asia will be lowered considerably up to 2035, indicating that nuclear capacity expansion can contribute to enhancing energy security in Asia.","PeriodicalId":121793,"journal":{"name":"Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131278751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Rapid and Simple Measurement Method of 90Sr Concentration in Water by Measuring β-rays from 90Y 用90Y射线测定水中90Sr浓度的快速简便方法

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.15669/fukushimainsights.vol.4.385

H. Hirayama, K. Kondo, Y. Unno, Hiroshi Matsumura, H. Iwase, A. Yunoki, S. Sasaki

引用次数: 0

Effect of B4C Absorber Material on Melt Progression and Chemical Forms of Iodine or Cesium under Severe Accident Conditions B4C吸收材料对严重事故条件下碘或铯熔体进程和化学形态的影响

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.15669/fukushimainsights.vol.4.341

A. Hidaka

引用次数: 0

Analysis of BWR Station Blackout Accident 沸水堆站停电事故分析

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.15669/fukushimainsights.vol.4.46

Tadashi Watanabe, M. Ishigaki, A. Sato, H. Nakamura

引用次数: 0

Improved Nuclear Emergency Management System Reflecting Lessons Learned from the Emergency Response at Fukushima Daini Nuclear Power Station after the Great East Japan Earthquake 从东日本大地震后福岛第二核电站应急响应中吸取教训的改进核应急管理体系

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J15.013

S. Kawamura, T. Narabayashi

{"title":"Improved Nuclear Emergency Management System Reflecting Lessons Learned from the Emergency Response at Fukushima Daini Nuclear Power Station after the Great East Japan Earthquake","authors":"S. Kawamura, T. Narabayashi","doi":"10.3327/TAESJ.J15.013","DOIUrl":"https://doi.org/10.3327/TAESJ.J15.013","url":null,"abstract":"Three nuclear reactors at Fukushima Daini Nuclear Power Station lost all their ultimate heat sinks owing to damage from the tsunami caused by the Great East Japan Earthquake on March 11, 2011. Water was injected into the reactors by alternate measures, damaged cooling systems were re-stored with promptly supplied substitute materials, and all the reactors were brought to a cold shutdown state within four days. Lessons learned from this experience were identiﬁed to improve emergency management, especially in the areas of strategic response planning, logistics, and functions supporting response activities continuing over a long period. It was found that continuous planning activities reﬂecting information from plant parameters and response action results were important, and that relevant functions in emergency response organizations should be integrated. Logistics were handled successfully but many difﬁculties were experienced. Therefore, their functions should be clearly established and improved by emergency response organizations. Supporting emergency responders in the aspects of their physical and mental conditions was important for sustaining continuous response. As a platform for improvement, the concept of the Incident Command System was applied for the ﬁrst time to a nuclear emergency management system, with speciﬁc improvement ideas such as a phased approach in response planning and common operation pictures.","PeriodicalId":121793,"journal":{"name":"Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132176051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Transfer Behavior of Cesium Adsorbed on Clay Minerals in Aqueous Solution 黏土矿物在水溶液中吸附铯的转移行为

Insights Concerning the Fukushima Daiichi Nuclear Accident Vol. 4 Pub Date : 1900-01-01 DOI: 10.3327/TAESJ.J13.023

Y. Okamoto, T. Osugi, H. Shiwaku, M. Akabori

引用次数: 3