For effective classification, treatment, and disposal of radioactively contaminated soil waste—aimed at reducing disposal costs and volume while ensuring facility safety and regulatory compliance at nuclear-related facility sites—the following sequential processes may be applied. These processes are based on the physical, chemical, and radiological characteristics of the waste and consist of six steps: (Step 1) preliminary classification of radioactively contaminated soil waste, (Step 2) pre-treatment based on the preliminary classification, (Step 3) contamination measurement and classification based on the pre-treatment, (Step 4) separation of contaminated soil waste based on the contamination measurement and classification, (Step 5) washing of contaminated soil waste based on the contamination measurement and classification, and (Step 6) disposal according to the final classification characteristics of the radioactively contaminated soil waste. These sequential processes provide an efficient, safe, and accurate method for the classification, treatment, and disposal of radioactively contaminated soil waste. This study can offer foundational data for establishing decommissioning strategies for nuclear-related facilities by proposing a technological system that is both site-specific and sustainable over the long term.

Keywords: Radioactively contaminated soil waste, Classification, Treatment, Disposal, Nuclear-related facility