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目的探讨核医学工作场所改建项目设计中存在的问题,提出可行性建议。方法查阅2010—2014年石家庄市职业病防治院承接或完成的核医学工作场所改建项目放射防护预评价报告及相关的资料审核记录,参考GBZ120—2006《临床核医学放射卫生防护标准》,对核医学工作场所改建项目设计中存在的问题进行汇总分析。结果本次调查的7个核医学工作场所改建项目设计中,存在放射工作人员与患者共用通道;区分控制区-监督区-非放射工作区(以下简称“3区”)分布设计方面,有2个项目的设计中控制区和监督区分区不明,导致放射性污染程度不同的场所混杂;3个项目室内排风的气流方向由低活区到高活区再到低活区,气流出现倒流;放射性废物管理措施符合要求。结论建议建设单位采取将放射工作人员与患者的通道分开设置,调整科室内功能区分区设置,通风管道布置和机械通风的进、出风口位置等措施,明确3区分布,使气流方向符合核医学布局原则。
Objective To explore the problems existing in the design of reconstruction projects of nuclear medicine workplace and put forward feasible suggestions. Methods The 2010-2014 Shijiazhuang Occupational Disease Prevention Hospital to undertake or complete the nuclear medicine work place remodeling project pre-evaluation report of radiation protection and related data audit records, refer to GBZ120-2006 “clinical nuclear medicine radiological health protection standards” on nuclear medicine Workplace remodeling project design problems in the summary analysis. Results In the design of the reconstruction project of 7 nuclear medicine workplaces in this survey, there are common corridors for radiation workers and patients. In terms of the distribution design of control area-supervision area-non-radioactive work area (hereinafter referred to as “3 zone”), There are two projects in the design of the control area and the supervisory district is not clear, resulting in mixed radioactive pollution levels of different places; three indoor exhaust air flow direction from low to high living area and then to the low living area, the air flow back ; Radioactive waste management measures to meet the requirements. Conclusion It is suggested that the construction unit adopt the measures such as setting the passage of radiation workers and patients separately, adjusting the setting of function zone zones, ventilation ducts and the position of air inlet and outlet of mechanical ventilation so as to clarify the distribution of the three zones so that the air flow direction meets the requirements of nuclear medicine Layout principle.