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Thermal-Hydraulic Assessment of W7-X Plasma Vessel Venting System in Case of 40 mm In-Vessel LOCA

机译:在容器内部40毫米的情况下,W7-X等离子体容器通风系统的热液压评估

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摘要

This paper presents assessment of the capacity of W7-X venting system in response to in-vessel LOCA, rupture of 40 mm diameter pipe during operation mode “baking.” The integral analysis of the coolant release from the cooling system, pressurisation of PV, and response of the venting system is performed using RELAP5 code. The same coolant release rate was introduced to the COCOSYS code, which is a lumped-parameter code developed for analysis of processes in containment of the light water reactors and the detailed analysis of the plasma vessel and the venting system is performed. Different options of coolant release modeling available in COCOSYS are compared to define the base case model, which is further used for assessment of the other parameters, that is, the failure of one burst disk, the temperature in the environment, and the pressure losses in the piping of venting system. The performed analysis identified the best option for coolant release modeling and showed that the capacity of the W7-X venting system is enough to prevent overpressure of the plasma vessel in the case of in-vessel LOCA.
机译:本文呈现了对船舶内部内部基因座,在操作模式下“烘焙过程中的载入内部管道响应的W7-X通风系统容量”。使用RELAP5码进行冷却系统的冷却剂释放的整体分析,PV的PV的压力和通风系统的响应。将相同的冷却剂释放速率引入Cocosys码,这是用于分析遏制光水反应器的过程的集合参数代码,并且进行了等离子体容器和通风系统的详细分析。比较Cocosys中可用的冷却剂释放建模的不同选项,以定义基本情况模型,其进一步用于评估其他参数,即一个突发盘的失败,环境中的温度以及压力损失通风系统的管道。所执行的分析确定了冷却剂释放建模的最佳选择,并显示W7-X通风系统的容量足以防止在容器内部管道内的等离子体容器的超压。

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