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The RSG-GAS reactor has entered its 32th year since first operating in 1987. For this reason, it is necessary to conduct a periodic safety review of all aspects of reactor operation in order to be able to provide sufficient data for decision makers as a material to put in place future operational plan policies, especially in order to ensure the safety of further operations up to the its designed age limit as well as to meet the provisions in the Regulations Head of BAPETEN N0. 2/2011, which requires to verify reactor safety at least in every 10 years. The purpose of this study was to determine the performance of the RSG-GAS reactor safety system which includes nuclear, thermo-hydraulics and radiation aspects, during the reactors 32 years of operation. Evaluation is carried out by collecting all reactor operating data for 32 years and then comparing with the limits and safety requirements of the reactor operation. Evaluation results indicate that the reactor is operating safely. During normal operation, the safety parameters are below the operating safety limits. In the event of failure and interruption of operation, the reactor protection system works well by turning off the reactor. The reactor can be operated for radio-isotope production and target irradiations for 32 years.