Table of Content

20 June 2025 Volume 45 Issue 3

  

Management

Discussion on the construction of radiation protection performance indicator system for nuclear power groups

GU Hairong

RADIATION PROTECTION BULLETIN. 2025, 45(3):  1-7. 

Abstract ( 30 )   PDF (712KB) ( 72 )  

References | Related Articles | Metrics

Radiation protection of nuclear power plants is an important part of nuclear power safety and an important cornerstone for the safe development of nuclear power industry. This paper takes the radiation protection supervision of nuclear power groups as an example, focusing on the construction of the radiation protection performance indicator system at the nuclear power group level as the research object. The objectives, ideas, and related issues of the performance indicator system construction under the current regulatory framework are discussed, with focus on addressing the incomplete dimensions of radiation risks, the incomplete hierarchy of indicators, and inconsistent definitions. By sorting out the standards and regulatory requirements for radiation protection, this paper proposes a safety performance indicator system that includes eight aspects: internal and external radiation exposure, skin exposure, high radiation areas, radioactive contamination, radioactive materials, radiation sources, and radiation monitoring. The safety performance indicator system is divided in five levels: accidents, significant events, general events, anomalies, and statistical indicators. It is expected that this study can provide a reference for the construction of radiation protection performance indicator system among nuclear power peers.

Analysis and improvement suggestions on the dual-track radiation environmental monitoring policy of nuclear power plants

HAN Liying, LIU Jun, GUAN Qingtao

RADIATION PROTECTION BULLETIN. 2025, 45(3):  8-12. 

Abstract ( 25 )   PDF (684KB) ( 36 )  

References | Related Articles | Metrics

This article provides an overview of the legal position and development history of the dual-track radiation environmental monitoring system in nuclear power plants. This article also analyzes the policy requirements and existing problems of the dual-track radiation environmental monitoring system, and proposes improvement suggestions from three aspects: unified regulatory requirements, resource sharing mechanism, and personnel qualification management, with the aim to improve the dual-track radiation environmental monitoring mechanism and enhance the quality and efficiency of radiation environmental monitoring in nuclear power plants.

Overview

Development trends in CFD model verification and validation methods

SHI Yikun, CHEN Jiachen, YUE Qi, MENG Binchi

RADIATION PROTECTION BULLETIN. 2025, 45(3):  13-16. 

Abstract ( 29 )   PDF (675KB) ( 157 )  

References | Related Articles | Metrics

Computational Fluid Dynamics (CFD) can simulate fluid-barrier interactions. Combined with Fick′s diffusion equation and N-S equation, CFD can simulate the diffusion of pollutants in the atmosphere, which can make up for the limitations of traditional Gaussian model in environmental impact assessment. With continuous development and application of Computational Fluid Dynamics (CFD) technology, its model validation and verification (V&V) methods are also being improved and updated. Institutions such as the American Institute of Aeronautics and Astronautics (AIAA) have taken V&V as an important development direction. China Center for Aerodynamic Research and Development (CCAAD) has also established a V&V system. This paper discusses the development trend of V&V methods for CFD models, with the aim to providing reference and reference for the application of CFD in environmental pollutant dispersion.

Reports

Research on efficiency testing of multi-form tritium sampler

MING Fei

RADIATION PROTECTION BULLETIN. 2025, 45(3):  17-21. 

Abstract ( 22 )   PDF (2243KB) ( 25 )  

References | Related Articles | Metrics

Multi-form tritium sampler uses the principle of catalytic oxidation combined with condensation to sample both oxidized and non-oxidized tritium from air. By establishing experimental methods, values of the sampler′s collection efficiency and catalytic efficiency for calculating sample activity were obtained. This paper mainly introduces the experimental methods for testing the catalytic efficiency and collection efficiency of the multi-form tritium sampler. Two simple experimental setups were constructed to test the collection efficiency and catalytic oxidation efficiency of the sampler. After long-term measurement and calculation of the water content difference between the gases before and after the sampler, it was found that the collection efficiency of the sampler can reach over 98%. Under the set temperature of 400 ℃, the catalytic unit can achieve over 99% oxidation of hydrogen in a standard mixed gas of air and hydrogen.

Experiences

Intelligent management system for radiation protection instruments in a nuclear power plant

XU Yaoyao, AN Shifeng, YANG Jingping, SUN Bo

RADIATION PROTECTION BULLETIN. 2025, 45(3):  22-27. 

Abstract ( 23 )   PDF (12903KB) ( 18 )  

References | Related Articles | Metrics

Intelligent management of instruments is an important means to enhance the refined management of radiation protection in nuclear power plants. While improving the overall efficiency of instrument management, intelligent management realizes the standardized management of the entire business process of instruments. An intelligent management system for radiation protection instruments of nuclear power plants is developed, which could conduct visual development in line with the requirements of actual work by sorting out and reconstructing the business process framework, and could realize the electronic integration of the entire business process.

Study on intervention tactics for psychological crisis during nuclear emergency at nuclear power plants

YANG Xiaoqiang

RADIATION PROTECTION BULLETIN. 2025, 45(3):  28-31. 

Abstract ( 31 )   PDF (669KB) ( 32 )  

References | Related Articles | Metrics

Psychological crisis intervention during nuclear emergencies may play an important role in supporting emergency response of nuclear power plants, alleviating psychological trauma among rescue personnel and the public, thus maintaining social stability. Based on the characteristics of nuclear accidents and the theory of psychological crisis intervention, this paper explores the target population, intervention timing, core principles, and specific methods for psychological crisis intervention in nuclear emergency situations. This paper also discusses the approach and importance of establishing a professional psychological crisis intervention team within nuclear power plants, offering insights into the improvement of nuclear emergency response systems.

Exploration of monitoring methods for krypton-85 in ambient air

WANG Ruijun, BAO Li, MA Xvyuan, LI Jinhao

RADIATION PROTECTION BULLETIN. 2025, 45(3):  32-35. 

Abstract ( 26 )   PDF (1038KB) ( 68 )  

References | Related Articles | Metrics

Krypton-85 in ambient air is an important nuclide to be monitored in the surrounding air of spent fuel reprocessing facilities. Generally, monitoring krypton-85 in the air requires the use of freezen adsorbents to adsorb krypton gas under low temperature conditions. During the gradual heating process, different gases with different boiling points are used to separate krypton; By using chromatographic separation methods, the pre-concentrated sample gas is further concentrated to obtain a sample that meets the measurement requirements. The measurement method usually chooses to measure the beta particles of krypton-85. Liquid scintillation method is a feasible method, but it also has some inherent disadvantages. Further research is needed to establish a stable and reliable monitoring technology for krypton-85 in ambient air.