Response-surface-fitting method based reliability analysis for passive decay heat removal system of China lead-based research reactor

Xiaolei PAN; Jiaqun WANG; Liqin HU; Jianye WANG; Jin WANG

doi:10.11889/j.0253-3219.2016.hjs.39.050602

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Response-surface-fitting method based reliability analysis for passive decay heat removal system of China lead-based research reactor

更新时间：2021-05-25

- Response-surface-fitting method based reliability analysis for passive decay heat removal system of China lead-based research reactor
- NUCLEAR TECHNIQUES Vol. 39, Issue 5, Article number: 050602(2016)
- 作者机构：
  
  1.中国科学技术大学合肥 230027;
  2.中国科学院核能安全技术研究所中子输运理论与辐射安全重点实验室合肥 230031
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2016.hjs.39.050602
  CLC： TL364.5
- Received：13 February 2016，
  
  Accepted：2016-03-17，
  
  Published：25 January 2016
- 稿件说明：
移动端阅览
Xiaolei PAN, Jiaqun WANG, Liqin HU, et al. Response-surface-fitting method based reliability analysis for passive decay heat removal system of China lead-based research reactor[J]. Nuclear techniques, 2016, 39(5): 050602
DOI：

Xiaolei PAN, Jiaqun WANG, Liqin HU, et al. Response-surface-fitting method based reliability analysis for passive decay heat removal system of China lead-based research reactor[J]. Nuclear techniques, 2016, 39(5): 050602 DOI： 10.11889/j.0253-3219.2016.hjs.39.050602.

摘要

非能动系统已广泛地应用于新一代堆的设计中

其可靠性分析成为新型反应堆概率安全评价(Probabilistic Safety Analysis

PSA)的重要内容。本文提出一种用于非能动系统可靠性分析的响应面拟合方法

并应用于中国铅基研究实验堆反应堆容器空气冷却系统(Reactor Vessel Air Cooling System

RVACS)的可靠性分析。采用流体计算软件Fluent模拟RVACS系统的输入输出作为求解响应面性能函数的输入样本

利用最小二乘法和bootstrap方法估计响应面性能函数的系数

以响应面模型代替Fluent模型分析RVACS系统的非能动失效概率。分析表明

在所有能动余热排除系统不可用的情况下

RVACS四组并联排热管中的两组也能够可靠地导出反应堆余热。RVACS系统可靠性高。

Abstract

Background:

Passive system has been widely applied in the design of the new generation reactor

and the reliability analysis has become a key matter in the Probabilistic Safety Analysis(PSA) frame.

Purpose:

A response-surface-fitting method for the reliability analysis of passive systems is presented and applied in Reactor Vessel Air Cooling System(RVCAS) of China lead-based research reactor(CLEAR-I).

Methods:

The inputs and outputs for Fluent model of RVCAS were set as the input samplings

and least square method and bootstrap method were used to solve the performance function of response surface which was used to evaluate the reliability of passive RVCAS

instead of Fluent model.

Results:

The results showed that two of four sets RVACS pipes can remove residual heat of reactor during loss of power with the probability of 0.9938.

Conclusion:

The system is highly reliable.

关键词

Keywords

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