Applicability Research of RELAP5 for Steam Generator Tube Rupture Accident of AP1000 NPP
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摘要: 蒸汽发生器传热管破裂事故(SGTR)是压水堆核电厂需要评价的一个重要的设计基准事故。先进非能动1000 MW核电厂(简称AP1000)在执照申请时使用专门的程序LOFTTR2对SGTR事故进行热工水力分析。为了验证RELAP5程序对AP1000 SGTR事故的分析能力,建立AP1000的RELAP5模型并进行计算分析。分析结果表明,无论是热工水力进程还是场外放射性剂量后果,RELAP5程序的计算结果都与安全分析报告中的结果符合得很好。RELAP5程序和所建立的模型能够用于其他SGTR相关的分析。Abstract: Steam generator tube rupture（SGTR） accident is a significant design basis accident which shall be analyzed in PWR nuclear power plant safety analysis reports. Thermo-hydraulic analysis of SGTR accident for licensing has been done using a specific code entitled LOFTTR2. To validate the applicability of RELAP5 for AP1000 SGTR accident, a RELAP5 model for AP1000 is established and used to assess this accident. Results show that both the accident progression and the doses result of RELAP5 calculation correspond well with that in Safety Analysis Report. Thus, RELAP5 and RELAP5 model of AP1000 can apply to other SGTR type analysis.
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Key words:
- SGTR /
- Accident analysis /
- Tube rupture /
- RELAP5 /
- LOFTTR2
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