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首页> 外文期刊>Science and technology of nuclear installation >Thermal-Hydraulic Assessment of W7-X Plasma Vessel Venting System in Case of 40 mm In-Vessel LOCA
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Thermal-Hydraulic Assessment of W7-X Plasma Vessel Venting System in Case of 40 mm In-Vessel LOCA

机译：W7-X等离子体容器放气系统在40 mm容器内LOCA情况下的热工液压评估

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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 operationmode "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：本文介绍了对W7-X通风系统容量的评估，以应对容器内LOCA，“烘烤”操作模式下直径40 mm的管道破裂。使用RELAP5代码对冷却剂从冷却系统释放，PV加压以及通风系统的响应进行整体分析。将相同的冷却剂释放速率引入到COCOSYS代码中，该代码是为分析轻水反应堆中的过程而开发的集总参数代码，并且对等离子体容器和通风系统进行了详细分析。比较了COCOSYS中可用的冷却剂释放模型的不同选项，以定义基本案例模型，该模型进一步用于评估其他参数，即一个爆破片的故障，环境中的温度以及容器中的压力损失。通风系统的管道。进行的分析确定了冷却剂释放建模的最佳选择，并表明在船上LOCA的情况下，W7-X排气系统的容量足以防止等离子容器超压。

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