The design of dry cask storage radiation shield for spent nuclear fuel of MPR-30 utilizing local natural resources

A part of used nuclear fuel from Multipurpose Research Reactor. G.A. Siwabessy in Serpong. until now it is still in a water storage pool around the reactor. Used fuel that has been cooled or when the storage pool is full. it must be removed and stored in dry cask storage (DCS). In this paper. a radiation shielding material for DCS has been simulated to be able to withstand radiation to meet the requirements of being safe for radiation workers and the environment and to last for a long time without the need for routine maintenance. In addition to being able to withstand gamma and neutron absorber. the radiation shielding components selected are also able to undergo pyrolysis to form ceramic components when exposed to high temperatures. The radiation component chosen is as abundant as possible and is a domestic industrial product. The mass attenuation coefficients of the radiation shield components have been calculated using the XCOM device using a database available at the National Institute of Standards and Technology (NIST).