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高速増殖炉高温構造設計基準材料強度基準等の高度化に関する検討報告(1); 昭和62年度KOM-MSS W/G活動報告

A Study on the rationalization of elevated temperature structural design standard; Standards for strength of material for fast breeder reactor (I) Technical report of KOM-MSS W/G 1987

二瓶 勲*; 青砥 紀身*

not registered; not registered

高速原型炉高温構造設計方針材料強度基準等の考えかたを踏まえ、それ以後蓄えられてきた技術や新規材料に関する知見および、解析手法ならびに、設計の合理化の観点から推進されてきた安全論理や設計裕度の見直しなどに基づいて、今後大型化する炉を考慮した「高速増殖炉高温構造設計基準材料強度基準等」の検討を実施した。初年度は、5つのサブ・グループを組織し、各々のS/Gが以下の主要項目について検討をした。(1)第1S/G : Mod.9Cr-1Mo鋼およびその溶接部の高温材料特性の把握と材料強度基準等(昭和61年度暫定)の見直し (2)第2S/G : 改良ステンレス鋼の高温における材料特性の把握 (3)第3S/G : SUS304溶接部の高温における材料特性の把握と評価 (4)第4S/G : 高速原型炉高温構造設計方針材料強度基準等の適用範囲の拡大 (5)第5S/G : クリープ疲労評価法の合理化

KOM-MSS W/G studies to rationalize and revise "Elevated Temperature Structural Design Standard - Material Strength Standard - for Fast Breeder Reactor" based on new engineering techniques, knowledges of new structural materials and new evaluation method, furthermore, based on rationalized safety argorithm and design margines which have been investigated at the economical point of view. In 1987, five sub-groups organized in KOM-MSS W/G began to study on each main theme as followed. (1)1st S/G : To study material properties of Mod.9Cr-1Mo steel and its weldment at elevated temperature and to revise "Material Strength Standard (tentative in 1986)". (2)2nd S/G : To study material properties of Mod. austenitic stainless steels at elevated temperature. (3)3rd S/G : To study material properties of weldment of SUS304 at elevated temperature. (4)4th S/G : To extend the application of the usual elevated temperature structural design guide for class 1 components of prototype LMFBR. (5)5th S/G : To rationalize the evaluation method for creep-fatigue damage.

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