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Nuclear fusion waste classification of K-DEMO under the Korean radioactive waste regulations

Byung Chul Kim2023年被引用 1Nuclear FusionIF 3出版社

The nuclear fusion waste generated by the activation of the constitutent components of the Korean fusion DEMOnstration reactor (K-DEMO) is assessed after the end of life (EOL). Based on the results, an attempt is made to classify the radioactive waste (RW) according to the Korean regulations on RW classification and self-disposal standards. One hundred years after EOL, most (∼90%) of the reduced activation ferritic/martensitic steel structures in the tritium-breeding blanket can be classified as intermediate-level waste (ILW). One-third of the total weight of borated stainless steel inside the shielding blanket can also be classified as ILW 100 years after EOL. The remaining components of the K-DEMO are assessed as low-level waste. Based on this study, fusion waste disposal strategies will be planned in parallel with the advance of the K-DEMO design to minimize the fraction of ILW.

日本語訳

核融合炉韓国DEMOnstration炉(K-DEMO)の構成要素の放射化によって生成される核融合廃棄物は、寿命終了時(EOL)後に評価される。その結果に基づき、放射性廃棄物(RW)を韓国のRW分類および自己処分基準に関する規制に従って分類する試みがなされる。EOLの100年後には、トリチウム増殖ブランケット内の低放射化フェライト/マルテンサイト鋼構造物の大部分(∼90%)が中レベル廃棄物(ILW)に分類され得る。遮蔽ブランケット内部のホウ素添加ステンレス鋼の総重量の3分の1も、EOLの100年後にILWに分類され得る。K-DEMOの残りの構成要素は、低レベル廃棄物として評価される。本研究に基づき、核融合廃棄物処分戦略は、ILWの割合を最小化するために、K-DEMO設計の進展と並行して計画されることになる。

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