Vol. 8 No. 2 (2022): KAJIAN KESELAMATAN PEMBANGUNAN REAKTOR DAYA SEBAGAI ALTERNATIF ENERGI MASA DEPAN

The pre-conceptual design of engineered safety features for the MSR reactor laboratory has been carried out. The design focused on determining the reactor life time, the reactivity coefficients of fuel and moderator temperatures, the reactivity coefficient of fuel density, the reactivity coefficient of void, the criticality of the primary system pipes, the criticality in the fuel drain tank, the kinetic parameters, and the reactivity insertion analysis. The objective of the design is to ensure that the designed MSR reactor core has an inherent safety with the subcriticality condition in the primary pipes and the fuel drained tanks. The MSR core is modelled by the R-Z and the 3-dimensional detail geometries by using the deterministic and Monte Carlo analytic tools, respectively. The design results showed that the MSR reactor with the thermal power of 20 MWt has the life time of 15 years. The criticality study shows that all primary systems and the fuel drained tanks are guaranteed to be in the subcriticality condition. The transient analysis due to the reactivity insertion of 37.1 pcm/s showed that the core can be controlled safely. Based on those designed results, the MSR reactor laboratory with the power of 40 MWt generated from two reactor units of 20 MWt is a very good recommendation. The recommended MSR laboratory can be used as a facility for the modular reactor with a cogeneration system. The cogeneration system consists of an electric generation system, propulsion system drive, and water desalination. This reactor can generate a minimum electric power of 7 MWe if the thermal efficiency is 35%.