Goddard C
Department of Clinical and Biomedical Physics, College of Medicine, Sultan Qaboos University, Sultanate of Oman.
Nucl Med Commun. 1999 Jan;20(1):85-94. doi: 10.1097/00006231-199901000-00013.
An underground system of tanks was installed to delay the discharge of 131I waste from the thyroid therapy unit to the on-site sewage treatment plant. As a consequence, the level of radioactivity discharged to sewage has fallen by a factor of 530, reducing the radiation dose to hospital and auxiliary service staff. Cancer patients are no longer required to collect their urine, hence increasing the hygiene for all concerned. A model was developed of iodine waste which estimates the dose rate above the delay tanks and the activity of iodine discharged. The maximum effective dose to a member of the public due to the holding tanks is 40 microSv.year-1. There is now better management of the radioactive waste from the iodine therapy ward.
安装了一个地下储罐系统，以延缓甲状腺治疗单元产生的¹³¹I废物排放到现场污水处理厂。结果，排放到污水中的放射性水平降低了530倍，减少了对医院及辅助服务人员的辐射剂量。癌症患者不再需要收集尿液，从而提高了所有相关人员的卫生水平。开发了一个碘废物模型，用于估算延迟储罐上方的剂量率和排放的碘活度。由于储存罐导致公众成员的最大有效剂量为40微希沃特/年。现在，碘治疗病房的放射性废物得到了更好的管理。
