Creep analysis model of small PWR plant RCS pipelines under severe accident condition

Lei YANG; Weiwei JIANG; Yalei HAO

doi:10.11889/j.0253-3219.2017.hjs.40.050603

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Creep analysis model of small PWR plant RCS pipelines under severe accident condition

NUCLEAR ENERGY SCIENCE AND ENGINEERING | 更新时间：2021-05-19

- Creep analysis model of small PWR plant RCS pipelines under severe accident condition
- NUCLEAR TECHNIQUES Vol. 40, Issue 5, Article number: 050603(2017)
- 作者机构：
  
  1.中国人民解放军92609部队北京 100077
  2.中国兵器工业集团第53研究所济南 250000
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2017.hjs.40.050603
  CLC： TL341;TK225;TK351.6
- Received：21 December 2016，
  
  Revised：27 February 2017，
  
  Published：10 May 2017
- 稿件说明：
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Lei YANG, Weiwei JIANG, Yalei HAO. Creep analysis model of small PWR plant RCS pipelines under severe accident condition[J]. Nuclear techniques, 2017, 40(5): 050603
DOI：

Lei YANG, Weiwei JIANG, Yalei HAO. Creep analysis model of small PWR plant RCS pipelines under severe accident condition[J]. Nuclear techniques, 2017, 40(5): 050603 DOI： 10.11889/j.0253-3219.2017.hjs.40.050603.

摘要

一回路承压管道蠕变是压水堆核电厂严重事故重要现象之一。针对小型压水堆，本文基于SCDAP/RELAP5程序开发了严重事故分析模型，利用实验拟合方法得到了一回路主管道（SA321）、自然循环式蒸汽发生器传热管（00Cr25Ni35AlTi）两种材料蠕变预测分析模型，改进了SCDAP/RELAP5程序蠕变预测分析功能模块，并通过假想事故序列验证了SA321、00Cr25Ni35AlTi蠕变预测分析模型的合理性。为后续开展小型压水堆严重事故下一回路承压管道蠕变规律研究提供基础参考。

Abstract

Backgroud

The reactor coolant system (RCS) pipelines creep is an important phenomenon during severe accident analysis of pressurized water reactor (PWR) plants.

Purpose

This study aims to develop a severe accident analysis model focus on the RCS pipeline creep analysis for small PWR plant.

Method

The severe accident analysis model is developed by using the SCDAP/RELAP5 code

the creep prediction formulas of RCS main coolant pipeline (SA321) and natural circulation steam generator tubes (00Cr25Ni35AlTi) materials are fitted by the experiment data

and the corresponding functions are added to the creep prediction subroutines of the SCDAP/RELAP5 code

which are finally verified by a simulation of supposed severe accident by SCDAP/RELAP5 code.

Results

The upgraded SCDAP/RELAP5 code is finally available for the RCS pipelines creep analysis of the small PWR under severe accident condition.

Conclusion

This provides a basic reference for the next quantify creep character analysis of the small PWR during the severe accident processes.

关键词

Keywords

references

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