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ナトリウム微小漏洩検出系の高度化 -概念検討-

A Study on an improvement of the small sodium leakage detection system (Conceptual study)

林田 均

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FBRプラントのナトリウム微少漏洩検出系を高度化し、性能を向上させることを目的に検討を行った。先ず、将来的に性能向上が、検出系の高度化に有効だと思われる項目を検討し、S/N(雑音対信号比)、応答性、ナトリウム選択検出性に着目することにした。次に、これを実現可能と考えられる新たな検出手法について検討し、将来の研究の進展が期待できるレーザ応用計測技術の中からレーザーブレークダウン分光法を選定し、そのシステム適用概念を示した。最後に、今後のR&Dの課題を摘出し、研究開発の方向を提案した。

A study on an improvement of the small sodium leakage detection system of the FBR plant was carried out. At first, the item which should be improved were examined and focused to S/N, responsibility and exclusive detectability for sodium aerosol. Next, the feature of the new detection techniques which could be feasible was studied. Then, the laser breakdown spectroscopy was selected as an advanced system. Finally, development subjects were picked up, and the direction of the research and developmet program was proposed.

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