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目的基于“辐射防护最优化”原则,探讨将原加速器机房改建为射波刀机房的防护改造设计方案。方法收集该机房的基础资料,按照国家标准及医院剂量率控制水平要求,通过理论计算结合项目现场情况给出合理的改造方案。结果在保持机房原有主体屏蔽的基础上,原副屏蔽墙、迷路内墙以及迷路外墙部分墙体需增加屏蔽厚度,主屏蔽墙和室顶无需改造,预计按照改造方案施工后,机房放射防护效果可满足国家标准及医院剂量率控制水平要求。结论在原加速器机房基础上进行局部屏蔽改造为射波刀设备所用,可有效节约场地和资金,但应注意机房局部屏蔽的优化问题,此外改造方案在考虑经济成本前提下还应充分考虑周围环境、空间利用、建筑承重、施工难度等多方面因素。
Objective Based on the principle of “Radiation Protection Optimization”, this paper discusses the protection and reformation design scheme of converting the former accelerator room into a surgeon room. Methods The basic information of the engine room was collected. According to the national standards and the dose rate control requirement of the hospital, a reasonable reformation plan was given through theoretical calculation combined with the project site conditions. The results of the original room to maintain the main screen shield, the original deputy shield wall, lost inner wall and lost part of the outer wall of the wall to be increased shielding thickness, the main shield wall and the roof without modification is expected to follow the transformation program after the construction of the engine room Radiation Protection The effect can meet the national standards and the hospital dose rate control level requirements. Conclusions The partial shield rebuild on the basis of the original accelerator room is used for the radio wave knife equipment, which can effectively save the space and capital, but should pay attention to the optimization of partial screening of the engine room. In addition, the reconstruction plan should fully consider the surrounding environment while considering the economic cost, Space utilization, building load-bearing, construction difficulty and many other factors.