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Long-term radioactivity in fusion reactors

Steve Fetter, E.T. Cheng, F.M. Mann1988年Fusion Engineering and DesignIF 1.7出版社

The specific activity limits for shallow land (“Class C”) waste disposal of all long-lived radionuclides with atomic number less than 88 have been calculated using the 10 CFR 61 methodology. These specific activity limits were used to determine the concentration limits of nearly all naturally-occurring elements in fusion reactor blanket materials. Of the elements that could be constituents of or impurities in blanket materials, aluminum, silicon, nickel, zirconium, tantalum, and tungsten were found to be limited to concentrations of 0.1 to 10%, and niobium, molybdenum, silver, gadolinium, terbium, and holmium were found to be restricted to 0.1 to 10 parts per million.

日本語訳

原子番号88未満のすべての長寿命放射性核種に対する浅地中(「クラスC」)廃棄の比放射能限度は、10 CFR 61の方法論を用いて計算されている。これらの比放射能限度は、核融合炉ブランケット材料中のほぼすべての天然存在元素の濃度限度を決定するために使用された。ブランケット材料の構成元素または不純物となり得る元素のうち、アルミニウム、ケイ素、ジルコニウム、ニオブ、タンタル、タングステンは0.1〜10%の濃度に制限され、モリブデン、銀、ガドリニウム、テルビウム、ホルミウムは0.1〜10ppmに制限されることが判明した。

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