共查询到17条相似文献,搜索用时 109 毫秒
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介绍了秦山二期工程燃料组件在LOCA和SSE同时发生的情况下,燃料组件与组件间、组件与围板间的撞击力计算方法和结果以及燃料组件各部分的应力分析和组件的稳定性分析。 相似文献
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在地震和失水事故下堆芯燃料组件的动力响应程序——FAMSAP主要由两个程序块组成,并包括一个绘图程序,即: FAMSAP=FAMREC+FAFRES+绘图程序其中FAMREC程序块是美国核管会主持开发的程序。FAFRES和绘图程序是根据具体需要研究编制的程序块。文章阐述了FAMSAP的功能和它所应用的模型,同时简要列出用此程序帮助上海核工程研究设计院计算的秦山核电厂燃料组件动力响应的部分结果作为示例。 相似文献
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采用RELAP5/MOD3热工水力瞬态分析程序,对4×4燃料组件考验装置(以下简称考验装置)小破口失水事故进行了分析计算,预计小破口失水事故下堆芯的热工水力行为(选取当量直径为φ4mm小破口)。分析结果表明:在发生当量直径为φ4mm的小破口失水事故下,考验装置专设安注系统能确保考验堆芯安全,且不会危及高通量反应堆。 相似文献
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核电厂主设备在地震加失水事故下的结构反应分析研究 总被引:1,自引:0,他引:1
核电厂主设备是核电厂的关键设备.对反应堆堆内构件、控制棒驱动系统、燃料组件和蒸汽发生器传热管等设备进行地震加失水事故联合作用下详细的动力分析与评定,是核电厂设计规范和安全审查的要求.上海核工程研究设计院在主设备的地震加失水事故下反应分析和试验研究的基础上,将主设备作为一个总体进行分析,从而形成一个完整的分析和评定系统.该研究成果已应用于秦山、PC两座核电厂的设计分析和安全评审中,对我国自主开展百万级先进压水堆核电厂主设备在地震加失水事故下的设计和安全分析具有良好的推广和应用前景. 相似文献
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基于ANSYS的燃料组件事故动力分析程序 总被引:1,自引:0,他引:1
对燃料组件事故动力分析的流程、燃料组件轴向模型以及横向排模型建立方法、轴向和横向事故动力响应计算方法、格架作用力和导向管应力计算方法进行了研究。基于有限元软件ANSYS的APDL和UIDL语言,引入参数化和模块化的思想,编制燃料组件事故动力分析程序,并采用编制的程序与专用软件分别对某型燃料组件进行对比验证。对比结果表明差异较小,均在工程允许误差范围之内;采用编制的程序代替专用软件进行燃料组件事故动力分析,编制的程序分析能力增强,效率更高。选取某电厂作为分析对象,采用编制的程序进行了实例计算,分析结果满足规范要求。 相似文献
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反应堆系统LOCA非线性动力分析 总被引:1,自引:1,他引:0
介绍秦山核电二期工程反应堆系统在一回路管理系统假想的失水事故(LOCA)发生时,系统在流体压力的瞬间变化产生的动态水力载荷作用下的非线性动力分析过程。文中着重介绍了反应堆系统中非线性因素的工程处理方法,非线性动力分析模型的建立和非线性动力学分析方法,对于系统LOCA动力响应及其在设计中的应用也 简要叙述。 相似文献
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《Journal of Nuclear Science and Technology》2013,50(7):763-769
LOCA-simulated experiments were performed with MDA, ZIRLO?, M5®, NDA, and Zircaloy-2 cladding specimens with local burn-ups ranging from 66 to 76 MWd/kg. Short test rods fabricated with the cladding specimens were heated, isothermally oxidized at 1,459 to 1,480K in steam flow, and finally quenched in flooding water. Rod rupture and subsequent double-sided oxidation of the cladding were also simulated in the experiments. Neither split-fracture nor fragmentation occurred during the quench in the cladding specimens which were oxidized to about 18–27% of the metallic thickness. Accordingly, the fracture boundary, a most important safety issue, is not reduced significantly by the high burn-up and use of the new alloys within the examined scope, although it may be somewhat reduced with pre-hydriding during the reactor operation as observed in unirradiated specimens. 相似文献
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Xie Yongcheng Yao Weida Jiang Nanyan Shi Guolin Yang Renan 《Nuclear Engineering and Design》2004,228(1-3):15
The fuel assembly is the main component in 300 MWe PWRs, located in an environment of high temperature, high pressure, irradiation and erosion of the reactor core. Whether or not it can keep functioning during the normal operation of plants, especially under severe accidents such as the earthquake and LOCA, will affect directly the safety of the NPPs. In this paper, by using the general-use computer code ANSYS, a horizontal modal analysis model and a non-linear impact analysis model as well as a vertical non-linear impact analysis model for the fuel assemblies are constructed. The results of the modal analysis are compared with that obtained from tests and other computer codes. Relevant parameters in the non-linear impact calculating models are selected and adjusted by comparing with the shaking table test data of the fuel assemblies. Based on the comparisons and adjustments, the dynamic response calculations of the 1×13 horizontal impact models for Qinshan and CHASNUPP under the earthquake (SSE) and LOCA conditions are performed and corresponding results are given. The response calculations of the vertical impact model for three kinds of postulated LOCA cases are also performed and relevant calculated results are provided. 相似文献
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É. A. Boltenko V. S. Grigoryan N. N. Kirin S. I. Sergeev I. L. Timofeev 《Atomic Energy》2003,95(1):443-448
The results of development work performed on and the application of fuel-assembly models with fuel-element simulators are presented. The technical solutions which make it possible to move the simulators under heat-cycling conditions, improve the temperature regimes of the simulators, and provide simulator operating conditions close to those in a reactor are presented. 相似文献
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核燃料组件运输容器隔振系统的振动分析 总被引:1,自引:0,他引:1
进行了核燃料组件运输容器隔振系统橡胶块的特性试验,测定了橡胶块的静态和动态拉压刚摩和剪切刚度,采用自由振动方法测定了橡胶块的拉压阻尼和剪切阻尼。建立了运输容器隔振系统的数学模型.对隔振系统的幅频特性和隔振传递率进行了分析,确定了系统各运动的共振频率。对运输容器系统受来自运载工具如铁道车辆或公路车辆的纵向冲击情况下的隔振性能进行了研究,导出了运载工具冲击加速度允许值的解析式,并进行了计算和分析。 相似文献