Open AccessEmergency evaluation model for nuclear criticality accidents of uranium enrichment facility
Author(s) -
Linsheng Jia,
Yapeng Yang,
Renze Wang,
Feng Zheng,
Ning Wang,
Boning Liang
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/983/1/012070
Subject(s) - criticality , nuclear criticality safety , enriched uranium , radiation accidents , nuclear engineering , computer science , uranium , reliability engineering , engineering , nuclear physics , physics
Accident emergency evaluation technology is an important part of emergency preparedness and response for nuclear critical accidents. Moreover, emergency management also requires that facility with potential nuclear criticality accidents should have the emergency evaluation capability of the accident, so it can provide auxiliary decision support for early emergency decision-making. The paper introduces the emergency evaluation model for nuclear criticality accident of uranium enrichment facilities, including criticality fission number estimation, released source term estimation and dose estimation. The potential nuclear critical accident scenario of uranium enrichment facilities considered in the paper is uranyl fluoride solution criticality. Solution criticality is a complex accident scenario that may involve multiple criticality problems. In the paper, the criticality fission number is estimated based on the critical radiation monitoring data, which can give the results quickly and meet the emergency requirements. Estimation of criticality fission number is a technical difficulty, which can directly reflect nuclear criticality accident scale and provide a theoretical basis for conservative protective actions.