Physical dose estimation for an accidental exposed person in industrial γ-ray flaw detection
10.3760/cma.j.issn.0254-5098.2021.05.011
- VernacularTitle:一名工业γ射线探伤意外受照人员物理剂量估算
- Author:
Ximing FU
1
;
Chunhui CHANG
;
Yulong LIU
;
Zhen WU
;
Huifang CHEN
;
Cuiping LEI
;
Long YUAN
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所，北京 100088
- Keywords:
Industrial radiography;
Physical dose estimation;
Monte Carlo simulation;
Local dose distribution
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(5):380-384
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To estimate the physical dose of an over exposed person working for industrial radiography.Methods:The main exposure parameters were obtained. The exposure duration was 8 min. The exposure pattern was external exposure by isotropic point radioactive source. The radioactive activity was 2.183 TBq. In the present calculation, the Chinese reference adult voxel phantom was used, and the Monte Carlo simulation was performed using the program based on the secondary development of Geant4 to obtain the absorbed dose of each part of the victim.Results:The dose distribution in the victim′s hands was obtained. The doses to most areas of the palm were 2-10 Gy, and the doses to the fingers were 10-20 Gy. The equivalent doses to 23 tissues or organs of the exposed person were estimated to be in the range of 0.012-0.207 Gy.Conclusions:The physical dose estimation method could evaluate rapidly the local dose distribution of the victim′s key exposed body parts, and thus provide an important reference for medical treatment.
