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| Research about prevention and control of radioactive contamination in the production of Thorium-Tungsten electrode |
| CHENG Fang1, WANG Lei2, WU Zhicheng3 |
1. Zibo Environmental Pollution Prevention and Control Center, Zibo 255030 China;
2. Shandong Nuclear and Radiation Safety Monitoring Center;
3. Shandong Haimeinong Project Consulting Co. Ltd. |
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Abstract Objective To analyze the radioactive contamination in the process of Thorium-Tungsten electrode production, and to determine the level of radiation contamination in the production site and the production process, which provides a basis for the radiation environment management in the whole production process and the minimization of radioactive contamination damage to workers and the environment.Methods Firstly, the complete production process of Thorium-Tungsten electrode was analyzed. Then, a typical Thorium-Tungsten electrode manufacturer was taken as an example, the radiation pollution environment in its radiation workplace was detected. The radiation pollution sources, radioactive pollution management key points and radiation pollution prevention and control measures were analyzed.Results The maximum monitoring value of the air absorbed dose rate of gamma-ray in each workplace was 0.32 μGy/h. The maximum monitoring value of alpha surface contamination level on each work table was 17.75 Bq/cm2 and that of beta surface contamination level was 35.55 Bq/cm2. The maximum level of surface contamination for the working clothes and gloves of staff in each post was 0.38 Bq/cm2, and that of beta contamination level was 4.00 Bq/cm2.Conclusion The radiation pollution of Thorium-Tungsten electrode production site is controllable to the surrounding environment, professional staff and public personnel under the implementation of radiation safety management system and radiation safety protection measures.
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Received: 07 September 2019
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