Evaluation of radioactivity analysis of pool and canal water in transfer channel - interim storage for spent fuel facilities

Currently, there are 287 spent nuclear fuel stored in transfer channel-interim storage for spent fuel (TC-ISSF) facilities. The storage pool used to temporarily store spent nuclear fuel from GA. Siwabessy Multipurpose Reactor, while the transfer channels used to transfer spent nuclear fuel and other irradiated material from RMI and RPI (PT. INUKI). Pool and channels filled with demineralized water which also serves to hold radionuclides from spent nuclear fuel to avoid detachment of radionuclides into the environment. Water quality is maintained by operating system of purification / water purification with ion exchange resins. Sampling of the water in both the pool and the canal were done by operating the water purification system of ponds and canals. Analysis of the radioactivity of water ponds and canals performed using gamma spectrometry. From the analysis of the radioactivity of water pools and channels at 2018 obtained radionuclides Cs-137 on energy 661,66 keV, the concentration was 1,48x10^-2 Bq/ml but still lower than the Limit of Permitted Highest Radioactivity Content / LPHRC (8 x10^-7 μCi/ml=3x10^-2 Bq/ml). The contaminants can be absorbed using a water purification system. The results of the analysis did not show any contamination of the activation of corrosion products such as Zn-65, Co-60 and Mn-54. Based on the evaluation and analysis of the contaminant can be inferred that the operation of the TC-ISFSF facility in good condition and safely in accordance with safety standards. (author)