|
| Analysis of Radiation Environment Characteristics of an Associated Radioactive Mine from 2020 to 2022 |
|
Received:July 29, 2023
Revised:August 03, 2023
Accepted:August 07, 2023
Published Online:October 27, 2023
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2023.12.015 |
| KeyWord:associated radioactive mine；radiation environment；feature analysis；238U；226Ra；232Th |
| Author | Institution |
| NING Jian |
广东省环境辐射监测中心 |
| TANG Zeping |
广东省环境辐射监测中心 |
| CHENG Xiaobo |
广东省环境辐射监测中心 |
| SU Chaoli |
广东省环境辐射监测中心 |
|
| Hits: 1310 |
| Download times: 1345 |
| Abstract: |
| According to relevant regulations, environmental radiation supervision monitoring for enterprises engaged in the development and utilization of naturally occurring radioactive materials (NORM) was carried out. To monitor the development and utilization of an associated radioactive ore enterprise for many years, study and analyze the change of monitoring results, and master the radiation level around the enterprise. On-site monitoring of γ dose rate around the enterprise will be carried out from 2020 to 2022, water samples from the upstream and downstream of the enterprise discharge outlet and the total sewage discharge outlet were collected, and the total amount of uranium and thorium, 226Ra, total α and total β contents were analyzed. The soil samples at the downwind factory boundary and surrounding environmental sensitive points of the enterprise, as well as the upstream and downstream sediment of the total sewage discharge outlet were collected, and the contents of 238U, 226Ra and 232Th were analyzed. The results show that most of the radioactive indicators of sewage discharged by enterprises in 2020—2022 meet the corresponding standards, and some indicators have reached the standard after rectification. The γ dose rate surrounding environment of the enterprise, the total amount of uranium and thorium in river water, the concentration of 226Ra nuclide, and the radioactivity index of soil in the surrounding environment are mostly within the background level. The γ dose rate is relatively high in individual locations of the factory boundary, so it is necessary to make plant function planning and rational stacking of radioactive materials. The individual radioactivity index is different from the understanding of the rule, which needs to be further follow-up researched. Through the continuous monitoring and analysis of the enterprise for three years, suggestions are put forward to speed up and improve the construction of the radiation environment standard and specification system of the associated radioactive mine development and utilization industry to ensure the healthy and orderly development of the industry. |
| Close |
|
|
|