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研究施設等廃棄物浅地中処分施設の概念設計

Conceptual design of near surface disposal facilities of radioactive wastes generated from research, industrial and medical facilities

天澤 弘也; 坂井 章浩; 仲田 久和; 原 弘典; 黒澤 亮平; 山本 正幸*; 河田 陽介*; 坂本 義昭

Amazawa, Hiroya; Sakai, Akihiro; Nakata, Hisakazu; Hara, Hironori; Kurosawa, Ryohei; Yamamoto, Masayuki*; Kawata, Yosuke*; Sakamoto, Yoshiaki

埋設処分業務の実施に関する計画に基づいて、原子力機構は事業の実施主体となり、研究施設等廃棄物の埋設処分施設の立地選定にかかわる手続きの透明性の確保及び公平性の観点から立地基準及び立地手順を策定し、これに基づいて立地選定を行う。また、本立地基準及び立地手順の策定にかかわる検討の一環として、関係法令等に定められた技術基準、一般的な自然及び社会環境等の立地条件、埋設対象廃棄物の廃棄体の種類,性状,含有核種,放射能濃度及び発生予測数量等に基づいて埋設施設の概念設計を行い、安全審査指針における基本的立地条件等を踏まえ、我が国において想定されうる種々の自然及び社会環境条件下において線量評価,費用試算を行い、埋設施設の安全性及び経済性に関する評価・検討を行う。本報告書は、このうち研究施設等廃棄物にかかわる浅地中埋設処分事業の操業から閉鎖後措置までの業務に供するすべての施設,設備,機器類等について、埋設施設の被ばく線量評価等に基づいた合理的な設備仕様、レイアウト等の概念設計の検討結果を取りまとめた。

JAEA is responsible for siting a proper location to establish new disposal facilities with siting criterion and procedure, in consideration of transparency and impartial for the siting process, based on Plan Concerning the Disposal Business Execution. As a part of the study to draw up siting criterion and procedure, Sensitivity analysis of the disposal facilities from the viewpoint of dose evaluation and cost estimation under various siting condition will be carried out. Therefore, Conceptual design of disposal facilities as a reference case is necessary. The basic condition of the design conforms to the property, quantity, radioactivity of waste packages, technical standards and likely siting condition. This report summarizes the results of the reasonable design of our disposal facilities and the layout of the place of activity where the disposal facilities and associated facilities to be installed.

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