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Chaidir Pratama,Daya Agung Sarwono,Ahid Nurmanjaya,Abidin Abidin,Triyatna Fani,Moch Subechi,Endang Sarmini,Enny Lestari,Yanto Yanto,Kukuh Eka Prasetya,Maskur Maskur,Fernanto Rindiyantono,Indra Saptiam Korean Nuclear Society 2024 Nuclear Engineering and Technology Vol.56 No.4
<sup>131</sup>I is a fission product produced in a nuclear reactor by irradiating tellurium dioxide, with a half-life of 8.02 day. The most important and widely used method for making <sup>131</sup>I is irradiation using a nuclear reactor and post-irradiation followed by dry distillation. The advantage of the dry distillation process is that the process and the equipment are relatively simple, namely TeO<sub>2</sub> (m.p. 750 ℃), which can withstand heating during reactor irradiation. Based on TeO<sub>2</sub> irradiation by neutron following the technique of dry distillation was explained for production of <sup>131</sup>I on a large scale. A dry distillation followed the radioisotope production operation using the 30 MW GA Siwabessy nuclear reactor to meet national demand. TeO<sub>2</sub> targets are 25 and 50 g irradiated for 87-100 h. The resulting <sup>131</sup>I activity is 20.29339-368.50335GBq. According to the requirements imposed on the radionuclide purity of the preparation, the contribution of <sup>131</sup>I training in the resulting preparation was not less than 99.9 %