The main results of experimental validation of the operability of passive core cooling systems of nextgeneration VVER are presented. It is shown that the residual heat release can be removed in 24 h on account of the operation of the second-stage water-storage system and the passive heat-removal system. As part of the validation of VVER-TOI passive safety systems the thermophysical properties of boric acid (density and viscosity) were measured experimentally with parameters characteristic for a reactor emergency. Empirical relations satisfactorily describing the experimental data are obtained.

中文翻译：

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用于验证下一代 VVER 被动安全系统可操作性的实验热物理研究

介绍了下一代 VVER 被动核心冷却系统的可操作性实验验证的主要结果。结果表明，由于二级蓄水系统和被动排热系统的运行，余热释放可在24 h内排出。作为 VVER-TOI 被动安全系统验证的一部分，硼酸的热物理特性（密度和粘度）通过反应堆紧急情况的参数特征进行了实验测量。获得了令人满意地描述实验数据的经验关系。