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Development of a code-agnostic computational infrastructure for the dynamic generation of accident progression event trees

机译:开发与代码无关的计算基础设施,以动态生成事故进展事件树

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Analysis of dynamic accident progression trees (ADAPT) is a mechanized procedure for the generation of accident progression event trees. Use of ADAPT substantially reduces the manual and computational effort for Level 2 probabilistic risk assessment (PRA) of nuclear power plants; reduces the likelihood of input errors; determines the order of events dynamically; and treats accidents in a phenomenology consistent manner. ADAPT is based on the concept of dynamic event trees which use explicit modeling of the deterministic dynamic processes that take place within the plant (through system simulation codes such as MELCOR, RELAP) for the modeling of stochastic system evolution. The computational infrastructure of ADAPT is presented, along with a prototype implementation of ADAPT using MELCOR for the PRA modeling of a station blackout in a pressurized water reactor. The computational infrastructure allows for flexibility in linking with different simulation codes, parallel processing of the scenarios under consideration, on-line scenario management (initiation as well as termination) and user-friendly graphical capabilities.
机译:动态事故进展树(ADAPT)的分析是用于生成事故进展事件树的机械化程序。 ADAPT的使用大大减少了核电厂2级概率风险评估(PRA)的人工和计算工作;减少输入错误的可能性;动态确定事件的顺序;并以现象学一致的方式处理事故。 ADAPT基于动态事件树的概念,该事件树使用在工厂内发生的确定性动态过程的显式建模(通过系统仿真代码,例如MELCOR,RELAP)来对随机系统演化进行建模。介绍了ADAPT的计算基础结构,以及使用MELCOR进行压水堆停电PRA建模的ADAPT原型实现。计算基础结构允许灵活地链接不同的仿真代码,对正在考虑的场景进行并行处理,在线场景管理(启动和终止)以及用户友好的图形功能。

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