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Revision of the inventory and recycling scenario of active material in near-term PPCS models

R. Pampin, V. Massaut, N.P. Taylor2007年被引用 12Nuclear FusionIF 3出版社

A sound approach to the recycling of fusion irradiated material is being developed. Study of industry experience, and consideration of realistic processing routes and techniques, provide a more sensible estimation of recycling feasibility than earlier studies based on purely radiological criteria. Under this approach, the analysis of active material in two models of the power plant conceptual study (PPCS) has been revised in more detail and accounting for the latest design features, nuclear data and international guidelines. A careful inventory of the materials has been performed, and estimation made of the radiological characteristics of all PPCS tokamak components, for the first time studying individual constituents and materials. Evaluation has been made of time scales for the radioactivity to decay to predetermined levels, which represent the spectrum of technological difficulties posed by the nature of the irradiated material. Three main mechanisms for the optimization of the materials management strategy have been identified during the assessments: segregation of components into individual materials, in situ refurbishment and stringent impurity control.

日本語訳

核融合照射材料のリサイクルに対する合理的なアプローチが開発されている。産業界の経験を調査し、現実的な処理経路と技術を考慮することで、純粋に放射線学的な基準に基づく初期の研究よりも、リサイクルの実現可能性についてより合理的な評価が可能となる。このアプローチに基づき、発電所概念研究(PPCS)の2つのモデルにおける放射性物質の分析が、最新の設計特徴、核データ、および国際的なガイドラインを考慮して、より詳細に改訂された。材料のインベントリは詳細に実施され、すべてのPPCSトークマク構成要素の放射線学的特性の評価が行われ、個々の構成要素と材料について初めて調査された。放射性崩壊による減衰時間スケールの評価が行われ、これは照射材料の性質によってもたらされる技術的困難のスペクトルを表す。材料管理戦略の最適化に関する3つの主要なメカニズムが評価中に特定された:構成要素の個別材料への分離、その場での改修、および厳格な不純物管理である。

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