Nuclear Techniques ›› 2020, Vol. 43 ›› Issue (6): 60004-060004.doi: 10.11889/j.0253-3219.2020.hjs.43.060004

• SPECIAL SECTION ON THE 11TH NATIONAL CONFERENCE ON NEW AND RESEARCH REACTORS (PART II) • Previous Articles     Next Articles

Study of initial events and safety criteria for CO2 cooled reactor

Huihui MAO1,Dan ZHANG1(),Chuntian GAO2,Pan WU2,Yu LIU1,Shumao BI1,Zhengpeng MI1   

  1. 1.Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
    2.Xi'an Jiao Tong University, Xi'an 710049, China
  • Received:2020-02-26 Revised:2020-04-01 Online:2020-06-15 Published:2020-06-12
  • Contact: Dan ZHANG E-mail:victorydan@126.com
  • About author:MAO Huihui, male, born in 1983, graduated from Xi’an JiaoTong University in 2005, focusing on safety study for nuclear power plant
  • Supported by:
    Youth Program of National Natural Science Foundation of China(11605132)

Abstract: Background

As a new concept reactor, direct circulation CO2 cooled reactor has different system configurations and safety characteristics compared with direct cycle boiling water reactor, indirect cycle helium gas cooled reactor and pressurized water cooled reactor, hence the CO2 cooled reactor has different initial events and safety criteria. The selection of initial events is the foundation for the safety design of reactor whilst the safety criteria provides criterion for whether the safety analysis results meet the safety requirements.

Purpose

This study aims at the initial events and acceptance criteria for the safety design of CO2 cooled reactor.

Method

The main logic diagram analysis method was employed to study the initial events of the direct circulation CO2 cooled reactor. Based on the existing engineering experience of pressurized water reactor, gas cooled reactor, the acceptance criteria for the direct circulation CO2 cooled reactor were proposed according to its own characteristics.

Results & Conclusions

The proposed initial events and acceptance criteria required for safety analysis are applicable to direct circulation reactor, providing a basis for the safety analysis of CO2 cooled nuclear power plant, and gives an important reference for the safety design of direct cycle circulation reactors.

Key words: CO2 cooled reactor, Direct circulation, Initial events, Safety criteria

CLC Number: 

  • TL364