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Research and development of three-dimensional isolation system for sodium cooled fast reactor, 7; Development summary of three-dimensional isolation system

高速炉用3次元免震装置の開発,7; 3次元免震装置の開発概要

渡壁 智祥; 山本 智彦  ; 岡村 茂樹; 宮崎 真之; 宮川 高行; 内田 昌人*; 平山 智之*; 杣木 孝裕*; 湯川 正貴*; 深沢 剛司*; 藤田 聡*

Watakabe, Tomoyoshi; Yamamoto, Tomohiko; Okamura, Shigeki; Miyazaki, Masashi; Miyagawa, Takayuki; Uchita, Masato*; Hirayama, Tomoyuki*; Somaki, Takahiro*; Yukawa, Masaki*; Fukasawa, Tsuyoshi*; Fujita, Satoshi*

ナトリウム冷却高速炉では、薄肉の機械部品や配管の耐震安全性を厳しい設計地震レベルで確保するため、3次元免震装置を開発している。開発成果の進捗をシリーズ(Part7$$sim$$Part9)発表する。Part7では、研究開発の全体概要、各要素を組み立てた状態での3次元免震装置の試験計画、および構成要素の性能について紹介する。Part8では、各要素を組み立てた状態での3次元免震装置の性能を負荷試験を通じて調査した。Part9では、試験結果で得た知見に基づき検証した解析モデルによる3次元免震装置の効果を報告する。

To secure the seismic safety of the thin-walled mechanical components and piping under a severe design earthquake level, employing a three-dimensional (3D) seismic isolation system has been planned in a sodium-cooled fast reactor. The development results of the 3D isolation system have been reported in previous papers so far. Its update is reported in Part 7 to Part 9. Part 7 describes the overview of the development, the test plan of the isolation system in the assembled state of each element, and the performance of individual isolation elements. In part 8, the performance of the isolation device that each element was assembled into was investigated through loading tests. Part 9 reports analytical studies by an analysis model validated based on the insight of the test results.

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