The fuel-self-sustaining RBWR-Th core concept and parametric studies

机译：燃料自给自足的RBWR-Th核心概念和参数研究

获取原文

页面导航

摘要
著录项
相似文献
相关主题

摘要

This study searches for the optimal fuel assembly design for the RBWR-Th core - a reduced-moderation BWR which is fuel-self-sustaining. Except for the initial fuel loading, it is charged with only thoria and discharges only fission products, recycling all actinides (with the exception of actinide impurities that end up in the waste streams). The design is a variant of the RBWR-AC core proposed by Hitachi, which arranges its fuel in a hexagonal tight-lattice, has a high outlet void fraction, axially segregates seed and blanket regions, and fits within the ABWR pressure vessel. The RBWR-Th shares these characteristics but replaces depleted urania with thoria as the primary fertile fuel, eliminates the internal blanket while axially elongating the seed region, and eliminates absorbers from the axial reflectors. The simulation is performed using MCNP6.1 for neutron transport, ORIGEN2.2 for transmutation, and a single-channel heat balance and void fraction correlation for a self-consistent neutronics thermal hydraulic solution. These three computational modules are iteratively executed by the MocDown driver code developed to automatically search for the equilibrium core composition and cycle length. The design variables of the parametric studies include the length of the seed and blanket zones, fuel rod diameter, lattice pitch, and concentration distribution of the recycled transfertile (TRF) isotopes in the seed. MocDown searches for the cycle length that will result in an end-of-cycle fissile inventory ratio of 1.0 along with estimated five batch core end-of-cycle keff value of 1.0. It was found that using thoria for the makeup fuel it is not possible to meet the shutdown margin constraint. Mixing in 25 to 30% depleted urania into the thoria makeup for the seed allows reduction of the magnitude of the negative void coefficient of reactivity so that adequate shutdown margin could be achieved along with adequate stability against two-phase coolant density oscillations. Promising designs arrived at so far are described. The performance of the RB WR-Th core is highly sensitive to modeling assumptions. Using the assumptions and correlations Hitachi used for the design of their RBWR-AC, the RBWR-Th average discharge burnup is 61 GWd/t versus 45 GWd/t of the depleted uranium fueled RBWR-AC.

机译：这项研究寻求用于RBWR-Th型堆芯的最佳燃料组件设计，RBWR-Th型堆芯是一种燃料自给自足的减量型BWR。除了最初的燃料负载外，它仅填充氧化ria，仅释放裂变产物，从而循环使用所有act系元素（最终流至废物流中的act系元素杂质除外）。该设计是日立公司（Hitachi）提出的RBWR-AC堆芯的一种变体，该堆芯将燃料布置在六角形的紧密晶格中，具有较高的出口空隙率，轴向隔离种子和覆盖层区域，并适合安装在ABWR压力容器内。 RBWR-Th具有这些特性，但用二氧化ria代替枯竭的尿素作为主要的可肥燃料，消除了内部覆盖层，同时轴向延长了种子区域，并消除了轴向反射器的吸收剂。使用MCNP6.1用于中子传输，使用ORIGEN2.2用于trans变，以及使用单通道热平衡和空隙率相关性来进行自洽中子电子热力液压解决方案来进行模拟。这三个计算模块由MocDown驱动程序代码迭代执行，该代码被开发为自动搜索平衡核心组成和循环长度。参数研究的设计变量包括种子和覆盖区的长度，燃料棒直径，晶格间距以及种子中循环可转移（TRF）同位素的浓度分布。 MocDown搜索周期长度，这将导致周期末裂变库存比率为1.0，以及估计的五批核心周期末keff值为1.0。已经发现，使用氧化ria作为补充燃料是不可能满足关闭裕度约束的。将25％至30％的贫化尿素混入种子的氧化ria组成中，可以降低反应性的负空洞系数的大小，从而可以实现足够的停机裕量以及对两相冷却剂密度振荡的足够稳定性。描述了到目前为止已经有希望的设计。 RB WR-Th磁芯的性能对建模假设高度敏感。使用Hitachi用于其RBWR-AC设计的假设和相关性，RBWR-Th的平均放电燃耗为61 GWd / t，而贫铀燃料RBWR-AC的平均排放燃耗为45 GWd / t。

著录项

来源
《International congress on advances in nuclear power plants》|2014年|15-23|共9页
会议地点
作者
Phillip M. Gorman; Guanheng Zhang; Jeffrey E. Seifried; Christopher R. Varela; Jasmina L. Vujic; Ehud Greenspan;
展开▼
作者单位

展开▼
会议组织
原文格式 PDF
正文语种
中图分类
关键词

相似文献

外文文献
中文文献
专利

1. TRADE-OFF STUDIES FOR THE FUEL-SELF-SUSTAINING RBWR-Th CORE [J] . PHILLIP M. GORMAN, JASMINA L. VUJIC, EHUD GREENSPAN Nuclear Technology . 2015,第3期

机译：燃料自持RBWR-Th核心的权衡研究
2. Analysis and parametric optimization of flux cored arc welding process for IS 2062 mild steel plates using Taguchi method and utility concept [J] . P. Sreeraj, T. Kannan, S. Maji Journal of Engineering and Technology Research . 2014,第7期

机译：利用Taguchi方法和效用分析IS 2062低碳钢板药芯焊丝的焊接工艺及参数优化。
3. Core crushing and dynamic response of sandwich steel beams with sinusoidal and trapezoidal corrugated cores: A parametric study [J] . Zhang Linhui, Kim Jeongho Journal of Sandwich Structures and Materials . 2019,第7期

机译：辛幻钢梁与梯形叠层瓦楞岩石砂钢梁的核心压碎与动力响应：参数研究
4. The fuel-self-sustaining RBWR-Th core concept and parametric studies [C] . Phillip M. Gorman, Guanheng Zhang, Jeffrey E. Seifried, International Congress on Advances in Nuclear Power Plants . 2014

机译：燃料自我维持RBWR-TH核心概念和参数研究
5. Performance of Parametric Vs. Data Mining Methods for Estimating Propensity Scores with Multilevel Data: a Monte Carlo Study [D] . Fan, Meng. 2020

机译：参数对的性能用于估算具有多级数据的倾向分数的数据挖掘方法：蒙特卡罗研究
6. New Concept of Power Generation Using TEGs: Thermal Modeling Parametric Analysis and Case Study [O] . Ahmad Faraj, Hassan Jaber, Khaled Chahine, 2020

机译：使用TEGS的发电概念：热建模参数分析和案例研究
7. Decision-making is the process of analyzing information about a problem situation and comparing it to a specific conclusion in order to solve a specific problematic (Yıkılmaz, 2001; Miller and Byrnes, 2001). Decision-making styles are a mechanism that is influenced by the internal and external conditions that determine the direction of the decisions of the individual, the content of the decision-making process, and the outcome of the decision-making process (Payne, Bettman and Johson, 1993; Bavol’ár and Orosová, 2015). ACT is a contemporary member of the Cognitive Behavioral Therapy family. ACT (Acceptance and commitment therapy) has both similar and different directions with Behavioral Therapies and Cognitive Therapies (Herbet and Forman, 2011; Hayes, 2004). KKT responds to classical behavioral treatments using both existential and cognitive approaches in the analysis of behavior. KKT is a science wing that tries to solve human problems with a wider perspective aimed at solving problematic human behaviors (Plumb, Stewart, Dahl and Lundgren, 2009). It is seen that there is very little research about the new approach of ACT approach when the aiming country of our country is screened and it is thought that our country will contribute to the field of psychological counseling with the work done. In the scope of the research, experimental and control groups and preliminary test, post-test and follow-up measurements of 2x3 experimental design were used. The study's study group consists of a total of 24 (12 experimental and 12 control groups) university students studying in different departments and levels, continuing their education in the academic year of 2015-2016 in Ağrı province and İbrahim Chechen University in 2015-2016 academic year. The average age of participants in the experiment and control group is 20. There were 12 participants in the experimental group, 7 female and 5 male, and 12 participants, 7 female and 5 male in the control group. Personal Information Form and Decision Making Style Scale prepared by the researcher were used in the research. In order to decide on the tests to be used in the course of analyzing the data, the scores of the participant's Decision Styles Scale pre-test, which are placed primarily in the experimental and control groups, it was analyzed whether the basic expectations of parametric tests were answered. As a result of the analysis made, the scores, skewness and kurtosis coefficients obtained from the Decision Making Styles Scale were given to the experimental and control groups. It was determined that the distribution was normal in the result of Shapiro-Wilk test, in which the skewness and kurtosis coefficients of each sub-scale were ranked between -1 and +1. Participants in the experimental and control groups; homogeneity test results for decision-style pre-test measurements indicate that the data are homogeneous. According to the results of the Mauchly Globalness Test, it has been determined that working supports the hypothesis. It was determined that there was no significant difference between the pre-test scores obtained from dependent decision-making style of experiment and control groups, but the test group showed lower mean scores at the significant level within the scores of post-test and follow-up tests. Therefore, it can be said that the ACT-oriented psychoeducation program applied to the experimental group reduces the dependent decision-making style scores from the decision style sub-dimensions and the psychoeducation program has a lasting effect. It was determined that there was no significant difference between pre-test, post-test and follow-up scores obtained from the Spontaneous-Instant Decision Style of experiment and control groups. Thus, it can be said that this situation does not cause a significant difference in the Spontaneous-Decision-Making Style scores from the decision style sub-dimensions of the ACT-oriented psychoeducation program applied to the experimental group. The ACT -oriented psychoeducation program had a decline in the intuitive decision-making styles of the individuals, but this decrease did not create significant differences. Thus, it can be said that this situation does not make a meaningful difference in the intuitive decision style scores from the decision style sub-dimensions of the KKT oriented psychoeducation program applied to the experimental group. The pre-test scores obtained from the rational decision-making style of the experimental and control groups showed that there was a difference between the post-test and the follow-up scores, but this difference was not significant. As a result of the analysis, it was determined that the test group had higher levels of rational decision style than the pre - test scores in the post test and follow - up scores, whereas the post test and follow - up test scores in the control group rational decision style showed a decrease compared to the pre - test scores. the pre - test scores. Decision-making Styles Scale Avoidant Decision Making As a result of the analysis of the mean scores of the subscale scores of pre-test, post-test and follow-up measures, the group effect was found to be insignificant. It was determined that the experimental and control groups differed significantly from the pre-test scores obtained from the avoidant decision-making style but did not show any significant change within the scores of the post-test and follow-up tests. [O] . mustafa ercengiz, ali haydar şar 2018

机译：决策是分析有关问题情况的信息并将其与特定结论进行比较的过程，以解决特定的问题（Yıkılmaz，2001; Miller和Byrnes，2001）。决策风格是一种机制，受到内部和外部条件的影响，确定个人决定的方向，决策过程的内容以及决策过程的结果（PAYNE，BETTMAN和BEDNE） Johson，1993;Bavol'ár和奥萨洛瓦，2015）。法案是认知行为治疗家庭的当代成员。行为（验收和承诺治疗）具有与行为疗法和认知疗法的类似和不同方向（Herbet和Forman，2011; Hayes，2004）。 KKT在分析行为中使用存在性和认知方法来响应古典行为治疗方法。 KKT是一个科学翼，试图解决人类问题，旨在解决有问题的人类行为（铅垂，斯图尔特，Dahl和Lundgren，2009）。有人认为，当我们国家的瞄准国家进行筛选时，有关行动方法的新方法几乎没有研究，并且认为我们的国家将为完成工作做出贡献的心理咨询领域。在研究的范围内，使用实验和对照组和初步测试，使用后测试和后续测量的2x3实验设计。该研究的研究小组包括共24名（12个实验和12个对照组）大学学生在不同的部门和水平上学习，在2015-2016学术上继续进行2015-2016的学术年度2015-2016学年年。实验和对照组参与者的平均年龄是20.实验组中有12名参与者，7名女性和5名男性，12名参与者，7名女性和5名男性。研究人员准备的个人信息表格和决策制定风格规模在研究中使用。为了决定在分析数据的过程中使用的测试，参与者的决策风格刻度预测的分数主要在实验和对照组中进行，分析了参数的基本期望吗？测试得到了回答。由于对实验和对照组给出了从决策曲调标度获得的分数，偏移和峰度分子系数。确定该分布是正常的在成熟的-WILK试验结果中，其中每亚级的偏差和刚度系数在-1到+1之间排名。实验和对照组的参与者;决策式预测测量的同质性测试结果表明数据是均匀的。根据毛毛环保试验的结果，已确定工作支持假设。据确定，从依赖决策风格的实验和对照组获得的预测分数之间没有显着差异，但测试组在测试后的分数内显示出较低的平均分数和后续的分数 - 测试。因此，可以说，应用于实验组的面向活动的心理教育程序减少了决策风格子维度的依赖决策风格分数，并且心理教育程序具有持久的效果。据确定，从实验和对照组自发决策风格获得的预测试，测试后和后续评分之间没有显着差异。因此，可以说这种情况不会导致从应用于实验组的活动导向的心理教育程序的决策风格分数的自发决策风格分数显着差异。行为的心理教育计划在个人直观的决策风格下降，但这种减少并没有产生显着的差异。因此，可以说，这种情况不会在从应用于实验组的KKT导向的心理教育程序的决策风格分数中产生有意义的决策风格分数。从实验和对照组的理性决策风格获得的预测分数显示后检验后和随访评分之间存在差异，但这种差异并不重要。由于分析，确定测试组的理性决策风格较高，而不是后测试和后续分数的预测分数，而对照组合理决策风格的后测试和后续测试分数显示出与预测试分数相比的减少。预测分数。决策款式扩展避免决策由于分析了预测试，测试后和后续措施的班次评分的平均分数，发现群体效应是微不足道的。确定实验和对照组从避免决策风格获得的预测评分中显着不同，但在测试后和后续测试的分数内没有显示出任何重大变化。

The fuel-self-sustaining RBWR-Th core concept and parametric studies

摘要

著录项

相似文献

相关主题

期刊订阅