Optimization of Dry Storage for Spent Fuel from G.A. Siwabessy Nuclear Research Reactor

Abstract

This study proposes a method of optimizing the dry storage design for nuclear-spent fuel from the G.A. Siwabessy research reactor at National Nuclear Energy Agency of Indonesia (BATAN). After several years in a spent fuel pool storage (wet storage), nuclear spent fuel is often moved to dry storage. Some advantages of dry storage compared with wet storage are that there is no generation of liquid waste, no need for a complex and expensive purification system, less corrosion concerns and that dry storage is easier to transport if in the future the storage needs to be sent to the another repository or to the final disposal. In both wet and dry storage, the decay heat of spent fuel must be cooled to a safe temperature to prevent cracking of the spent fuel cladding from where hazardous radioactive nuclides could be released and harm humans and the environment. Three optimization scenarios including the thermal safety singleobjective, the economic single-objective and the multi-objective optimizations are obtained.The optimum values of temperature and cost for three optimization scenarios are 317.8K (44.7°C) and 11638.1 US$ for the optimized single-objective thermal safety method, 337.1K (64.0°C) and 6345.2 US$ for the optimized single-objective cost method and 325.1K (52.0°C) and 8037.4 US$ for the optimized multi-objective method, respectively.

Theoretical and Experimental Analysis on Influence of Natural Airflow on Spent Fuel Heat Removal in Dry Cask Storage

“…For this type of opening, the typical C d value is 0.6. A is the inlet or outlet cross-sectional area in m 2 . The pressure difference in the air gap, as shown in Figure 5, is as follows:…”

“…There are several studies on the handling and storage of spent fuel [1][2][3][4][5][6][7][8][9][10]. After remaining in interim wet storage for more than 4 years, spent fuel can be moved to dry cask storage.…”

The Role of Nuclear Power Plants in Indonesia towards Net Zero Emissions (NZE) in 2060 with a Multi Regions Approach

“…In 2009, research on nuclear use in Bangka-Belitung was conducted by BATAN 32) , resulting in an NPP with a 10 GWe capacity that might be built by combining four NPP reactors at Sebagin Village Coast in South Bangka and six NPP reactors at Tanjungular in West Bangka's Muntok. Other research was conducted in addition to the site feasibility study, such as Indonesia's spent fuel storage safety [33][34][35] , Small Modular Reactor SMR 36) , and floating NPPs 37) .…”

CRITICALITY SAFETY ANALYSIS OF THE DRY CASK DESIGN WITH AIR GAPS FOR RDNK SPENT PEBBLE FUELS STORAGECriticality Safety Analysis of the Dry Cask Design with Air Gaps for RDNK Spent Pebble Fuels Storage

“…The function of air gaps is to improve the removal of decay heat generated by radionuclides decay reaction in the spent fuel. The presence of the air gaps may provide advantages as many processes in dry cask storage are temperature dependent [10]. For example, high temperature may accelerate deformation of dry storage materials as well as corrosion process [11].…”