Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (5): 50603-050603.doi: 10.11889/j.0253-3219.2017.hjs.40.050603

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

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

YANG Lei1, JIANG Weiwei2, HAO Yalei1   

  1. 1 92609 Department of People's Liberation Army of China, Beijing 100077, China;
    2 China North Industries Group Institute of 53, Jinan 250000, China
  • Received:2016-12-21 Revised:2017-02-27 Online:2017-05-10 Published:2017-05-03
  • About author:10.11889/j.0253-3219.2017.hjs.40.050603

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.

Key words: PWR, Severe accident, Creep prediction, SCDAP/RELAP5 code

CLC Number: 

  • TL341