報告書番号

E285005

タイトル（和文）

ESTIMATION OF THE RELATIONSHIP BETWEEN STEAMGENERATOR TUBE VIBRATIONS AND TUBE-TO-TUBE SUPPORT INTERACTION CHARACTERISTICS

タイトル（英文）

ESTIMATION OF THE RELATIONSHIP BETWEEN STEAMGENERATOR TUBE VIBRATIONS AND TUBE-TO-TUBE SUPPORT INTERACTION CHARACTERISTICS

概要 （図表や脚注は「報告書全文」に掲載しております）

本報告は，高浜発電所における事故時の防災対策のための基礎資料とするため，放射性物質の大気放出時の拡散予測を行ったものである。放射性物質を含むプルームによる被爆線量は，高浜発電所およびその周辺の地形模型を用いた拡散風洞実験による地表濃度分布を用いて，計算により評価された。

概要 （英文）

TUBE-TO-TUBE SUPPORT INTERACTION CHARACTERISTICS WERE DETERMINED ON A MULTI-SPAN TUBE GEOMETRY REPRESENTATIVE OF A STEAM GENERATOR DESIGN IN WATER FLOW ENVIRONMENTS. TO PREVENT THE DENTING OF STEAM GENERATOR TUBES IN THE CLEARANCE BETWEEN TUBES AND TUBE SUPPORT PLATES, TUBE SUPPORT PLATE DESIGN IS CHANGED TO REDUCE THE AREA OFTHE CLEARANCE. IT IS THEREFORE VERY IMPORTANT TO EVALUATE THE INFLUENCE OF TUBE SUPPORT GEOMETRIES ON THE INTERACTION CHARACTERISTICS FOR PREDICTING THE FRETTING AND WEAR. THE RESULTS SHOW THAT TUBE VIBRATION MAGNITUDE IN CASE FREE FROM TUBE SUPPORT CONTACTS, TUBE ECCENTRICITY IN THE TUBE SUPPORT PLATE, AND CLEARANCE BETWEEN TUBE AND SUPPORT ARE SIGNIFICANT EVALUATING FACTORS FOR THE INTERACTION CHARACTERISTICS SUCH AS IMPACT FORCES, AND BY USING THESE FACTORS THE TUBE-TO-TUBE PLATE INTERACTION CHARACTERISTICS CAN BE ESTIMATED.

報告者

キーワード