Inventory Analysis of Radiological for Graphite Thermal Column from Triga Mark II Reactor, Bandung

Abstract

The inventory analysis of radiological for graphite thermal column from Triga Mark II reactor, Bandung has been presented. The age of Triga Mark II reactor is more than 45 years, therefore the reactor certainly will be decommissioned sooner or later. Before being decommissioned, one important thing that should be done is the inventory analysis of radiological of its all component. The data of the inventory analysis is needed to calculate the radioactive waste, which needed budget for decommissioning. The graphite thermal column is the most significant solid radioactive waste. The inventory analysis of the radiological for graphite thermal column could be calculated by computer code ORIGIN2. This study can be concluded that the inventory analysis of radiological for graphite thermal column from Triga Mark II reactor, Bandung, after being shut down for 5 years is H-3, C-14, Fe-55, Mn-54, Co-60, Eu-152 and Eu-154 for graphite; Al-28, Fe-55, Co-60, Ni-63 and Zn-65 for aluminum cover; and Cl-36, K-40 and Fe-55 for boral cover, with total specific activity for inside increment is 1.87x103 Bq/g for graphite and 1.15x104 Bq/g for aluminum; and for outside increment is 2.43x10 Bq/g for graphite; 1.52x102 Bq/g for aluminum and 8.8x10 Bq/g for boral cover. If it is being stored for 30 years, the dominant radionuclide is H-3, Co-60 and Eu-152.