Investigation on natural penetrating radiation along the Qinghai-Tibet Railway
10.13491/j.issn.1004-714X.2024.03.011
- VernacularTitle:青藏铁路沿线天然贯穿辐射水平调查
- Author:
Guowen ZHENG
1
;
Yantao QU
2
;
Chuangao WANG
1
;
Zhiping LUO
1
;
Ling CHEN
1
Author Information
1. China Institute of Atomic Energy, Beijing 102413 China.
2. New Era Engineering Consulting co., ltd, Beijing 102200 China.
- Publication Type:OriginalArticles
- Keywords:
Qinghai-Tibet Railway;
Natural penetrating radiation;
Cosmic ray ionization component;
Neutron;
Terrestrial gamma radiation
- From:
Chinese Journal of Radiological Health
2024;33(3):288-292
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the natural penetrating radiation levels along the Qinghai-Tibet Railway, and to preliminarily evaluate the doses received by the railway employees and passengers. Methods Natural penetrating radiation was measured at 15 typical locations with different altitudes along the railway and in the carriages of a train from Lhasa to Xining using high-pressure ionization chamber RSS131, sodium iodide radiation dose rate meter MARS1561, and neutron ambient dose equivalent rate meter LB6411. Results The levels of terrestrial gamma radiation, cosmic ray ionization components, and neutron radiation were 21.5-246.6 nGy/h, 79.8-225.5 nGy/h, and 24.5-101 nSv/h, respectively. The effective dose of natural penetrating radiation received by passengers and crew on a train from Lhasa to Xining was 4.82 μSv. Conclusion Comparison with the empirical formula and verification of method reliability confirm the accuracy of the measurement. Our results provide a primary understanding of the radiation levels along the Qinghai-Tibet Railway and the radiation doses received by passengers, which can be used as a basis for the regulatory authorities.
