Comparative analysis of using natural and radiogenic lead as heat-transfer agent in fast reactors

8th International Scientific Conference "Issues of Physics and Technology in Science, Industry and Medicine"

物理学;工业技术;医药卫生

Laas, R.A.^1 ; Gizbrekht, R.V.^1 ; Komarov, P.A.^1 ; Nesterov, V.N.^1

National Research Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Comparative analysis;    Heat-transfer agents;    Induced radioactivity;    Multiplication factor;    Natural composition;    Neutron multiplication;    Nuclear transformations;    Radiogenic leads;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/135/1/012024/pdf
DOI  :  10.1088/1757-899X/135/1/012024

来源: IOP

【 摘 要 】

Fast reactors with lead coolant have several advantages over analogues. Performance can be further improved by replacement of natural composition lead with radiogenic one. Thus, two main issues need to be addressed: induced radioactivity in coolant and efficient neutron multiplication factor in the core will be changed and need to be estimated. To address these issues analysis of the scheme of the nuclear transformations in the lead heat-transfer agent in the process of radiation was carried out. Induced radioactivity of radiogenic and natural lead has been studied. It is shown that replacement of lead affects multiplication factor in a certain way. Application of radiogenic lead can significantly affect reactor operation.