[G15-19] 放射線化学

[G19] PWR 条件下での過酸化水素と酸素濃度の水素添加依存性

^〇ラートナイサット パンティラー¹, 勝村庸介¹, 向井悟², 梅原隆二³, 志水雄一³, 鈴木将² (1.東大, 2.NDC, 3.MHI)

キーワード：PWR, Hydrogen Water Chemistry, Computer Simulation

At present, 25-40cc H₂/kg H₂O (STP) is injected to the primary coolant of PWRs to inhibit the production of oxidizing species. Recent studies reveal that, at high temperature, less amount of additional hydrogen is required, and excess hydrogen injection may leads to different type of corrosion due to reductive environment. By using computer simulation, the required concentration of additional hydrogen and the concentration of oxidizing species; H₂O₂ and O₂, at high temperature were evaluated based on available data