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Cold leg break LOCA Analysis for Canadian-SCWR with passive safety system
CHAO Fei,YUAN Yuan,WU Pan #,SHAN Jianqiang *,GOU Junli
School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049
*Correspondence author
#Submitted by
Subject:
Funding: Doctoral Program of Higher Education of China (No.20120201110043)
Opened online:16 May 2016
Accepted by: none
Citation: CHAO Fei,YUAN Yuan,WU Pan.Cold leg break LOCA Analysis for Canadian-SCWR with passive safety system[OL]. [16 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4687309
 
 
Safety analysis is an important issue in SuperCritical Water Reactor concept development. Loss of coolant accident is one of the most important accident which should be treated seriously. The cold leg break LOCA analyses are carried out in this paper to evaluate the feasibility of Canadian SCWR. Passive safety systems, such as automatic depressurization system, accumulator and gravity driven cooling system are applied to mitigate the LOCA consequence. The following conclusions are achieved:1) two cladding temperature peaks will appear in the process of cold leg break LOCA. The discharge flowrate through cold leg break is favourable to decrease the first cladding temperature peak. Automatic depressurization system can decrease the second cladding temperature peak effectively. The first peak cladding temperature in 25% break case is higher than that in 100% break case, while the second peak cladding temperature in 25% break case is lower than that in 100% break case. 2) The peak cladding temperatures of Canadian SCWR with passive safety system under cold leg break LOCA stay below the temperature criterion.
Keywords:Canadian SCWR; Cold leg LOCA; Passive safety system; Automatic depressurization system
 
 
 

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