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首页> 外文期刊>Transactions of the American nuclear society >A System Simulation Code to Support the Safety Case in the LWR Life Extension: Selection, Development, and Testing of Code Architecture and Solution Algorithms, invited
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A System Simulation Code to Support the Safety Case in the LWR Life Extension: Selection, Development, and Testing of Code Architecture and Solution Algorithms, invited

机译：支持LWR寿命延长中的安全案例的系统仿真代码：代码体系结构和解决方案算法的选择，开发和测试，受邀

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摘要

Development, demonstration, and validation of the Risk-Informed Safety Margin Characterization (RISMC) methodology and tools are planned and carried out under the auspice of the U.S. Department of Energy's Light Water Reactor Sustainability (LWR-S) Program, with the objective to support decision-making on extending life of the existing plants beyond 60 years [1]. This report summarizes insights derived from R&D on architecture and algorithms of next generation system safety simulation software called R7 code. R7's goal is to enable characterization of risk-informed safety margins in nuclear power plants, including the effect of plant aging. R7 code's basic functions are to compute loading ("stressors") and capacity ("fragility") on a specified system, structure, and component (SSC) at any given time of the plant life, including the postulated life extension. Stressors come in different categories: mechanical, thermal, irradiation and chemical. A particular stressor or parameter is considered important because it represents a challenge to integrity or operability of the SSC under consideration.
机译：在美国能源部的轻水反应堆可持续性计划（LWR-S）的主持下，计划并实施了风险告知安全裕度表征（RISMC）方法和工具的开发，演示和验证，目的是为支持关于延长现有工厂寿命超过60年的决策[1]。本报告总结了从R＆D获得的有关下一代系统安全仿真软件R7代码的体系结构和算法的见解。 R7的目标是能够表征核电厂中风险告知的安全裕度，包括电厂老化的影响。 R7代码的基本功能是在工厂寿命的任何给定时间（包括假定的寿命延长），计算指定系统，结构和组件（SSC）上的负载（“应力源”）和容量（“脆弱性”）。压力源分为不同类别：机械，热，辐射和化学。特定的压力或参数被认为很重要，因为它对所考虑的SSC的完整性或可操作性构成了挑战。

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