For pressurized water reactor nuclear power plants, in order to prevent the release of radioactive substances into environment, fission product barriers (FPBs) are constructed based on the concept of defense-in-depth, including fuel clad, reactor coolant system (RCS), and containment; the status of these FPBs is then acting as an important dimension to decision-making of emergency action levels (EALs). For CPR1000 nuclear power plants, state functions defined in state-oriented emergency operating procedure (SOP) are used to characterize postaccident physical conditions; their degradation substantially represents the challenges on fundamental safety functions and then on the integrity of FPBs in like manner, so degradation of these state functions is referred to as determining initial conditions of each FPB, by which the link between SOP and EALs is established. Then, an intelligent FPB monitoring system (FPBMS) aiming to automatically monitor states of FPBs is developed, verified, and validated. The pioneering work, by building bridges between state functions and initial conditions of FPBs and then computerizing them innovatively, proves that dynamical monitoring of states of FPBs during accident evolvement and real-time indication of loss or potential loss of FPBs can be achieved, which is most helpful in decision-making of EALs.

中文翻译：

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基于状态功能的面向国家应急运行程序的燃油障碍物监测系统的开发

对于压水堆核电站，为了防止放射性物质释放到环境中，基于深度防御的概念构造了裂变产物屏障（FPB），包括燃料包层，反应堆冷却剂系统（RCS），和遏制；这些FPB的状态将成为紧急行动级别（EAL）决策的重要方面。对于CPR1000核电厂，使用面向状态的紧急运行程序（SOP）中定义的状态功能来表征事故后的物理状况；它们的降级实质上代表了基本安全功能的挑战，然后又以类似的方式对FPB的完整性提出了挑战，因此，这些状态功能的降级称为确定每个FPB的初始条件，通过它可以建立SOP和EAL之间的链接。然后，开发，验证和验证了旨在自动监视FPB状态的智能FPB监视系统（FPBMS）。通过在FPB的状态功能和初始条件之间建立桥梁，然后对其进行创新的计算机化，这项开创性工作证明，可以实现事故演变过程中FPB的状态动态监测以及FPB损失或潜在损失的实时指示，这是对EAL的决策最有帮助。