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高レベル放射性廃棄物の地層処分における人工バリア性能等の性能保証に関わる研究の進め方と反映先(その2)

Studies on the Performance Guarantee for the Engineered Barrier System on Geological Disposal of High-Level Radiactive Waste(Vol.2)

杉田 裕 ; 栗原 雄二; 川上 進; 神徳 敬; 油井 三和

Sugita, Yutaka; Kurihara, Yuji; Kawakami, Susumu; Jintoku, Takashi; Yui, Mikazu

国が策定する安全基準・指針等に資するため、今後の研究開発当により得られる成果がどのように反映されるかを明確にするための検討を行った。ここでは、処分場における長期的安全性の観点から人工バリア等の処分施設を構成する各要素のうち、埋め戻し、プラグ、坑道、処分孔等、において性能を保証すべき項目(案)を抽出し、これらの項目について具体的にどのように性能保証するかの(案)を示した。さらに、これらの性能保証方法(案)について現状の取り組み状況(第2次取りまとめ)を踏まえて、今後の取り組みが必要と考えられる課題を抽出した。

In order to contribute to the safety standards and guidelines upon which a governmental administration decide, examination for clarifying how to reflect the result obtained by future R&D was performed. From a view point of long-term safety on geological disposal, the items which should guarantee the performance of each element which constitutes disposal institutions (by this report, they are the backfill, the plug, the tunnel, and the pit) were extracted, and it was shown what a performance guarantee is concretely offered about these items. Furthermore, based on H12 report as a situation of present R&D for a method of a performance guarantee, the subjects considered that a future R&D is required were extracted.

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