Journal of the Nuclear Fuel Cycle and Waste Technology最新文献_第10页

Activation Analysis of Dual-purpose Metal Cask After the End of Design Lifetime for Decommission 双用途金属桶设计寿命退役后的活化分析

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.343

Tae-Man Kim, Ji Ku, H. Dho, C. Cho, Jae-Hun Ko

引用次数: 1

The Evaluation of Minimum Cooling Period for Loading of PWR Spent Nuclear Fuel of a Dual Purpose Metal Cask 双用途金属桶装载压水堆乏燃料最小冷却周期的评估

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.411

H. Dho, Tae-Man Kim, C. Cho

引用次数: 6

Aggregate Effects on γ-ray Shielding Characteristic and Compressive Strength of Concrete 集料对混凝土γ射线屏蔽特性和抗压强度的影响

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.357

Jeong-Hwan Oh, Young-Bum Mun, Jae-Hyung Lee, Hyun-Kook Choi, S. Choi

引用次数: 1

Comprehensive Development Plans for the Low- and Intermediate-Level Radioactive Waste Disposal Facility in Korea and Preliminary Safety Assessment 韩国中低水平放射性废物处理设施综合发展计划及初步安全性评价

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.385

K. Jung, Jin Hyeong Kim, Mi-jin Kwon, Mi-seon Jeong, Sung-W. Hong, J. Park

引用次数: 6

Establishment of the Physicochemical and Radiological Database of Raw Materials and By-Products in Domestic Distribution 国内流通原料与副产物理化与放射学数据库的建立

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.331

Chung-Sup Lim, Jong-Myoung Lim, Ji-young Park, K. Chung, Chang-jong Kim, B. Chang, Young-Yong Ji

引用次数: 0

Study on the Code System for the Off-Site Consequences Assessment of Severe Nuclear Accident 重大核事故场外后果评价代码体系研究

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-12-31 DOI: 10.7733/JNFCWT.2016.14.4.423

Sora Kim, B. Min, Kihyun Park, Byung-Mo Yang, K. Suh

引用次数: 0

U.S. Policy and Current Practices for Blending Low-Level Radioactive Waste for Disposal 美国混合处置低放射性废物的政策和现行做法

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-09-30 DOI: 10.7733/jnfcwt.2016.14.3.235

D. Kessel, Chang-Lak Kim

{"title":"U.S. Policy and Current Practices for Blending Low-Level Radioactive Waste for Disposal","authors":"D. Kessel, Chang-Lak Kim","doi":"10.7733/jnfcwt.2016.14.3.235","DOIUrl":"https://doi.org/10.7733/jnfcwt.2016.14.3.235","url":null,"abstract":"In the near future, many countries, including the Republic of Korea, will face a significant increase in low level radioactive waste (LLW) from nuclear power plant decommissioning. The purpose of this paper is to look at blending as a method for enhancing disposal options for low-level radioactive waste from the decommissioning of nuclear reactors. The 2007 U.S. Nuclear Regulatory Commission strategic assessment of the status of the U.S. LLW program identified the need to move to a risk-informed and performance-based regulatory approach for managing LLW. The strategic assessment identified blending waste of varying radionuclide concentrations as a potential means of enhancing options for LLW disposal. The NRC’s position is that concentration averaging or blending can be performed in a way that does not diminish the overall safety of LLW disposal. The revised regulatory requirements for blending LLW are presented in the revised NRC Branch Technical Position for Concentration Averaging and Encapsulation (CA BTP 2015). The changes to the CA BTP that are the most significant for NPP operation, maintenance and decommissioning are reviewed in this paper and a potential application is identified for decommissioning waste in Korea. By far the largest volume of LLW from NPPs will come from decommissioning rather than operation. The large volumes in decommissioning present an opportunity for significant gains in disposal efficiency from blending and concentration averaging. The application of concentration averaging waste from a reactor bio-shield is also presented.","PeriodicalId":17456,"journal":{"name":"Journal of the Nuclear Fuel Cycle and Waste Technology","volume":"55 1","pages":"235-243"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82839210","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

Study of Classification and Disposal Method for Disused Sealed Radioactive Source in Korea 韩国废弃密封放射源分类与处置方法研究

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-09-30 DOI: 10.7733/jnfcwt.2016.14.3.253

Sukhoon Kim, Juyoul Kim, Seunghee Lee

引用次数: 0

Dechlorination/Solidification of LiCl Waste by Using a Synthetic Inorganic Composite with Different Compositions 不同成分合成无机复合材料对LiCl废石的脱氯固化研究

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-09-30 DOI: 10.7733/JNFCWT.2016.14.3.211

Kim Na-young, Choi In-hak, Park Hwan Seo, D. Ahn

引用次数: 2

Removal of I by Adsorption with AgX (Ag-impregnated X Zeolite) from High-Radioactive Seawater Waste AgX(浸渍ag的X沸石)吸附去除高放射性海水废物中的ⅰ

Journal of the Nuclear Fuel Cycle and Waste Technology Pub Date : 2016-09-30 DOI: 10.7733/JNFCWT.2016.14.3.223

Eil-Hee Lee, Keunyoung Lee, Kwang-Wook Kim, Hyung‐Ju Kim, I. Kim, D. Chung, J. Moon, Jongwon Choi

{"title":"Removal of I by Adsorption with AgX (Ag-impregnated X Zeolite) from High-Radioactive Seawater Waste","authors":"Eil-Hee Lee, Keunyoung Lee, Kwang-Wook Kim, Hyung‐Ju Kim, I. Kim, D. Chung, J. Moon, Jongwon Choi","doi":"10.7733/JNFCWT.2016.14.3.223","DOIUrl":"https://doi.org/10.7733/JNFCWT.2016.14.3.223","url":null,"abstract":"This study aimed to the adsorption-removal of highradioactive iodide (I) contained in the initially generated high-radioactive seawater waste (HSW), with the use of AgX (Ag-impregnated X zeolite). Adsorption of I by AgX (hereafter denoted as AgX-I adsorption) was increased by increasing the Ag-impregnated concentration in AgX, and its concentration was suitable at about 30 wt%. Because of AgCl precipitation by chloride ions contained in seawater waste, the leaching yields of Ag from AgX (Ag-impregnated concentration : about 30~35 wt%) was less than those in distilled water (< 1 mg/L). AgX-I adsorption was above 99% in the initial iodide concentration (Ci) of 0.01~10 mg/L at m/V (ratio of weight of adsorbent to solution volume)=2.5 g/L. This shows that efficient removal of I is possible. AgX-I adsorption was found to be more effective in distilled water than in seawater waste, and the influence of solution temperature was insignificant. Ag-I adsorption was better described by a Freundlich isotherm rather than a Langmuir isotherm. AgX-I adsorption kinetics can be expressed by a pseudo-second order rate equation. The adsorption rate constants (k2) decreased by increasing Ci, and conversely increased by increasing the ratio of m/V and the solution temperature. This time, the activation energy of AgX-I adsorption was about 6.3 kJ/mol. This suggests that AgX-I adsorption is dominated by physical adsorption with weaker bonds. The evaluation of thermodynamic parameters (a negative Gibbs free energy and a positive Enthalpy) indicates that AgX-I adsorption is a spontaneous reaction (forward reaction), and an endothermic reaction indicating that higher temperatures are favored.","PeriodicalId":17456,"journal":{"name":"Journal of the Nuclear Fuel Cycle and Waste Technology","volume":"72 1","pages":"223-234"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84103984","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: 5