Development of a mobile personnel radiation protection equipment
10.13491/j.issn.1004-714X.2024.02.009
- VernacularTitle:移动式人员辐射防护作业装备研制
- Author:
Yuan HE
1
;
Hongchao PANG
1
;
Yang LIU
1
;
Jianhua WU
1
;
Junlin WANG
1
;
Yanan HONG
1
;
Xubiao CHEN
1
;
Hualin WANG
1
;
Xiaoyu SHI
1
;
Miao PAN
1
;
Qiang WANG
1
Author Information
1. China Institute of Atomic Energy, Beijing 102413 China.
- Publication Type:OriginalArticles
- Keywords:
Radiation workers;
Aerosol;
Radiation protection;
Shielding calculation;
Intelligent equipment
- From:
Chinese Journal of Radiological Health
2024;33(2):158-163
- CountryChina
- Language:Chinese
-
Abstract:
Objective To design a mobile personnel radiation protection equipment for operation in environments with high radiation such as spent fuel reprocessing plants, to achieve simultaneous protection against γ radiation, neutron radiation, and radioactive aerosol, to reduce the internal and external exposure dose of radioactive workers, and to meet the requirement of operation for two hours. Methods The core parts of the mobile personnel radiation protection equipment included a shielding chamber and a respiratory maintenance system. An automated chassis was used for the movement and lifting of the shielding chamber. MCNP software was used to simulate and calculate the protective effects of shielding chamber made of different materials and material thicknesses. Experimental verification of the shielding chamber design was conducted. Mathematical models were established to describe the variations in the content of various gases in the chamber with personnel operation time. A respiratory maintenance system, a harmful gas absorption device, and an automated mobile chassis were designed. Results The shielding chamber made of polyethylene with a thickness of 80 mm achieved an 80% neutron shielding rate. The respiratory maintenance system could support workers for 2 hours of operation inside the equipment. The mobile chassis allowed operation of the equipment with one person. Conclusion This mobile personnel radiation protection equipment can solve the problem in simultaneous protection against γ radiation, neutron radiation, and radioactive aerosol. The equipment can provide radiation protection for radioactive workers, reduce exposure dose, and reduce personnel burden. This system provides technical means for the operation and maintenance of equipment in high-radiation sites such as spent fuel reprocessing plants.
