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    压水堆一回路腐蚀产物释放、迁移及沉积试验技术的研究进展

    Research Progress of Experimental Techniques for Release, Migration and Deposition of Corrosion Products in Primary Coolant System of Pressurized Water Reactors

    • 摘要: 回顾了压水堆(PWR)腐蚀产物释放、迁移及沉积试验技术,介绍了基于试验技术获得的试验数据和结果,对比分析了不同试验技术的优缺点。结果表明:在腐蚀产物释放方面,基于定量水化学分析技术的腐蚀产物溶出释放试验可以在精确控制水化学条件的情况下直接检测腐蚀产物释放量,是一种高效、直接、精确的试验方法;在腐蚀产物迁移沉积方面,基于堆外动水回路的腐蚀产物沉积试验能够较好模拟压水堆实际工况,可实现性高且成本相对较低,试验条件可涵盖不同工况与设计范围,适于开展影响因素分析、规律探索和工程验证。目前,国内外获取的腐蚀产物特性数据较少,缺乏停堆工况下的试验研究,因此有必要系统开展不同工况下的腐蚀产物特性试验,获得一回路主要部件腐蚀产物释放、迁移及沉积试验数据,为国产源项软件验证提供支撑。

       

      Abstract: The experimental techniques of corrosion product release, migration and deposition in pressurized water reactor (PWR) were reviewed. The experimental data and results obtained based on the experimental techniques were introduced. The advantages and disadvantages of different experimental techniques were compared and analyzed. The results showed that in the aspect of corrosion product release, the dissolution and release test of corrosion products based on quantitative water chemical analysis technology can directly detect the release amount of corrosion products under the condition of precise control of water chemical conditions, which is an efficient, direct and accurate test method. In terms of corrosion product migration and deposition, the corrosion product deposition test based on the out-of-pile hydrodynamic loop can better simulate the actual situation of PWR, with high feasibility and relatively low cost. The test conditions can cover different working conditions and design ranges, which is suitable for influencing factor analysis, law exploration and engineering verification. At present, there are few corrosion product characteristic data obtained at home and abroad, and there is a lack of experimental research under shutdown conditions. Therefore, it is necessary to systematically carry out corrosion product characteristic tests under different working conditions, and obtain the release, migration and deposition test data of corrosion products of the main components of the primary circuit, which provides support for the verification of domestic source term software.

       

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