International Conference on the Management of Naturally Occurring Radioactive Materials (NORM) in Industry

Security analysis of monazite in Bangka Island, Indonesia

Not scheduled

5m

IAEA Headquarters, Vienna, Austria

Poster NORM Residue and Waste Management Session VI - Solutions for Residue and Waste Management

Speaker

Mr Ega Sa'yan Maskura (Universitas Gadjah Mada)

Description

Monazite is a side mineral in the tin mining process in Bangka Island and categorized as waste. This material consists of thorium of 3-6% that can be converted to uranium 233 using radiative captured reaction. This is a special nuclear materials (SNM) that should be protected and monazite become SNM precursor. Some questions arise on accumulated monazite. Should monazite be protected from theft and adversary actions using physical protection system? How much monazite should protected? What PPS can be designed? How effective the designed PPS will be? Study is conducted to answer the questions.
We make survey and simulation to calculate the amount of monazite that can be converted to 1 SQ of Uranium 233. Then an hypothetical PPS is designed. Finally, the designed PPS is assessed using an attack defense tree.
The study shows that 628 tonnes of monazite can be converted to 1 SQ of U233. The assessment of hyphotetical PPS designed shows that the opportunity of theft to be succeed is less than 20 %.