铀纯化转化生产过程中作业人员的β外照射防护研究

Abstract

Abstract: In order to strengthen the protection of workers from β irradiation in the process of uranium purification and transformation,combined with the practice of radiation monitoring at home and abroad,the characteristic of radiation source term in the process of uranium purification and transformation are studied. Due to the existence of main β emitter of Th-234,Pa-234,Bi-214 and Pb-214 in uranium system,the β radiation intensity in uranium compounds in considerable. Without protective measures,especially when carrying out open maintenance work,the exposure dose of β to lens、hands and skin of workers may exceed the prescribed limit. Therefore,in addition to the protection of external γradiation and internal inhalation radiation,it is necessary to protect workers from β irradiation.

Key words: nuclear fuel, uranium purification and transformation, uranium daughter, β-ray, dose, radiation protection

CLC Number:

TL75+2

MA Wencai, LIU Yanzhang, ZHAO Ying. Study on protection of workers from β-irradiation in the process of uranium purification and transformation[J].RADIATION PROTECTION, 2021, 41(S1): 26-28.

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Study on protection of workers from β-irradiation in the process of uranium purification and transformation

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