活化加速器室混凝土去污方案及其实施——以医学与药理研究中心基金会PET回旋加速器室退役为例

Radioisotopes Pub Date : 2020-12-15 DOI:10.3769/radioisotopes.69.365

Y. Miyazaki, G. Yoshida, K. Masumoto, H. Matsumura, Masahiro Tanaka

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引用次数: 1

摘要

在此，我们提出了高活性混凝土在加速器室去污的案例研究。对日本石川医学和药理学研究中心基金会正电子发射断层扫描(PET)制药用活化回旋加速器室进行了净化。用NaI测量仪在50 cm网孔处测量混凝土墙、地板和天花板的接触剂量率。通过在7个不同的地方钻孔，获得了混凝土中比活度的深度剖面。根据所测接触剂量率与比活性深度剖面之间的关系，对活化混凝土区域进行了详细估算。活化混凝土已经碎裂

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Decontamination Plan for the Concrete of the Activated Accelerator Room and Its Implementation: A Case Study in the Decommissioning of the PET Cyclotron Room at the Medical and Pharmacological Research Center Foundation

Herein, we present the case study of the decontamination of highly activated concrete in the accelerator room. The activated cyclotron room for pharmaceutical for the positron emission tomography (PET) in the Medical and Pharmacological Research Center Foundation (Ishikawa, Japan) was decontaminated. The contact dose rates of the concrete walls, ﬂoor, and ceiling were measured at 50 cm mesh using a NaI survey meter. The depth proﬁles of spe ciﬁc activity in the concretes were obtained by core boring at seven diﬀerent places. The activated concrete regions were estimated in detail based on the relationship between the measured contact dose rates and depth proﬁles of the speciﬁc activity. The activated concrete was chipped and

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Radioisotopes

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