标准摘要
[中文适用范围]： 本文件规定了高温下金属部件密封性评估的方法和技术，通过使用示踪气体检漏仪和从部件流出的高压氦气或气体混合物在真空室中测量其总泄漏率来评估金属部件的密封性。 示踪气体在其操作条件下的热循环和压力循环过程中。 最小可检测泄漏率可低至10-10 Pa·m3/s，具体取决于部件的尺寸、外部构造复杂程度和材料，并且与测试系统和测试条件密切相关。 本文件适用于核聚变反应堆正常运行条件下的容器内部件的热氦泄漏试验，核聚变反应堆在10-6Pa的超高真空环境和内部流动冷却剂的高温下运行在工作压力下。 也适用于其他可抽真空、加压的金属部件和设备的焊缝整体密封性试验，如发电厂、航空航天和其他核反应堆的加压罐、管道和阀门等。 [外文原描述]： This document specifies the methods and techniques for leak tightness assessment of a metallic component at high temperature by measuring its total leakage rates in a vacuum chamber with a tracer gas leak detector and high-pressure helium gas or the gas mixture flowing out of the component as tracer gas during its thermal and pressure cycles at its operating conditions. The minimum detectable leakage rate can be as low as 10 -10 Pa · m 3 /s, depending on the dimension, external configuration complexity and materials of the component, and is strongly related to the test system and the test conditions. This document is applicable for the hot helium leak test of in-vessel components as per its normal operating conditions in nuclear fusion reactors, which operate at elevated temperatures in an ultra-high vacuum environment down to 10 -6 Pa and with inner flowing-coolant at operating pressure. It is also applicable to the overall leak tightness test of welds in other metallic components and equipment that could be evacuated and pressurized, such as pressurized tanks, pipes and valves in power plants, aerospace and other nuclear reactors.
英文名称Reactor technology — Nuclear fusion reactors — Hot helium leak testing method for high temperature pressure-bearing components in nuclear fusion reactors