摘要
数字减影血管造影机(DSA)是核技术利用项目中最常见的医用Ⅱ类射线装置。核技术利用环境影响评价报告的编制、评审和复核均遵循《辐射环境保护管理导则核技术利用建设项目环境影响评价文件的内容和格式》(HJ 10.1—2016)格式及要求,需采用理论计算的方式核算DSA机房的屏蔽防护是否满足《放射诊断放射防护要求》(GBZ 130—2020)辐射限值。本文从DSA设备结构特点和作为医疗器械的准入条件方面入手,给出满足GBZ 130—2020最低屏蔽铅当量、最不利机房尺寸及最不利工况下DSA机房的屏蔽计算及参数选取,并通过计算结果验证了GBZ 130—2020对DSA机房的最小铅当量要求。建议DSA机房的环境影响预测方法,可采取与GBZ 130—2020标准对比,而不必拘泥于HJ 10.1—2016要求的理论计算,有利于减轻环评编制人员、评审人员和审批人员的工作负担。
DSA(Digital subtraction angiography)is the most common medical facility as a Class II radiation device of environmental impact evaluation report form for nuclear technology application facilities.At present,the composing,reviewing and checking of the EIA report on the nuclear technology are in accordance with the format and requirements of the“Radiation environmental protection management guidelines Content and format of environmental impacts evaluation document for nuclear technology application facilities”(HJ 10.1-2016),and theoretical calculation is required to check whether the shielding protection of the DSA room meets the radiation limits specified in the“Requirements for radiological protection in diagnostic radiology”(GBZ130-2020).In this paper,based on the structural characteristics of DSA equipment and access conditions as medical devices,the shielding calculation and parameter selection of DSA equipment room meeting the minimum shielding lead equivalent of GBZ130-2020,the most unfavorable room size and the most unfavorable working conditions are given,and the minimum lead equivalent requirements of GBZ130-2020 for DSA room are verified through the calculation results.It is suggested that the nuclear technology environmental impact assessment method of DSA room can be evaluated by comparing with GBZ130-2020 standard,rather than adhering to the theoretical calculation required by HJ10.1-2016,which is conducive to reducing the work burden of EIA composing personnel,reviewers and approving personnel.
作者
戴瑜
Dai Yu(Jiangsu Fuhuan Environmental Technology Co.,Ltd.,Nanjing,210019,China)
出处
《核安全》
2024年第4期19-25,共7页
Nuclear Safety
