Accident source term and radiological consequences of a small modular reactor

Hai-Ying Chen; Fu-Dong Liu; Shao-Wei Wang; Yi-Chuan Wang; Chao Xu; Qiao-Feng Liu

doi:10.1007/s41365-023-01192-5

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Accident source term and radiological consequences of a small modular reactor

NUCLEAR ENERGY SCIENCE AND ENGINEERING | Updated：2023-04-20

- Accident source term and radiological consequences of a small modular reactor
- Nuclear Science and Techniques Vol. 34, Issue 3, Article number: 40(2023)
- Affiliations：
  
  1.Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 102401, China
  2.State Environmental Protection Key Laboratory of Nuclear and Radiation Safety Regulatory Simulation and Validation, Beijing 102401, China
- Author bio：
  
  * wangshaowei@chinansc.cn;
  xuchao@chinansc.cn
- Funds：
- DOI：10.1007/s41365-023-01192-5
  CLC：
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Hai-Ying Chen, Fu-Dong Liu, Shao-Wei Wang, et al. Accident source term and radiological consequences of a small modular reactor. [J]. Nuclear Science and Techniques 34(3):40(2023)
DOI：

Hai-Ying Chen, Fu-Dong Liu, Shao-Wei Wang, et al. Accident source term and radiological consequences of a small modular reactor. [J]. Nuclear Science and Techniques 34(3):40(2023) DOI： 10.1007/s41365-023-01192-5.

摘要

Abstract

Considering the growing global demand for energy and the need for countries to achieve climate goals, there is an increasing global interest in small modular reactors (SMRs) and their applications. Accident source term and radiological consequence evaluations of SMRs are key components of nuclear and radiation safety reviews, which affect the site, exclusion area (EAB), and low population zone (LPZ) outer boundaries. Based on the design characteristics of the SMR and accident analysis results, a theoretical model of a whole-core fuel cladding damage accident was constructed to study the radioactivity released into the environment and its consequences. The accident source term and radiation dose calculation models were established to analyze the released amounts of radionuclides and the total effective dose affecting individuals at the site boundary. The results showed that the amount of radionuclides released into the environment after a whole-core fuel cladding damage accident reached 10,14, Bq, among which the release amount of ,133,Xe was the largest. The total effective dose at the site boundary 30 days after the accident was 8.65 mSv. The highest total effective dose affecting individuals occurred to the east-north-east. The results of the accident source term and radiological consequence provide technical support for site boundary dose assessments and reviews of SMRs.

关键词

Keywords

Small modular reactorAccidentSource termRadiological consequenceTotal effective dose

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