An extensive assessment of the safety of an interim disposal facility within King fahd university for Petroleum and minerals (KFUPM) located in Dhahran, Saudi Arabia for the low and intermediate level radioactive waste, was done with the aid of RESRAD-OFFSITE code and is reported here. Within the boundaries of the repository acceptance criteria, 13 radionuclides and gross alpha were chosen for the evaluation preliminary study. There and in the facility, relevant groundwater was treated as undisturbed and its composition was modelled using the thermodynamic database from the Japan Atomic Energy Agency in combination with the PHREEQC program. Furthermore, the distribution coefficients of the facility elements were derived from the same agency‘s sorption data. All these geochemical parameters were then included alongside other known descriptors of the disposal facility and its site into the RESRAD-OFFSITE model. From the results, the safety assessment stated that the calculated exposure dose would be only 2.6% of the limit of 0.07mSv per year. In addition, changing key geochemical parameters confirmed sensitivity shatters the estimation but the foregone exposure dose remained within the safety limit.
