高温气冷堆抗氧化燃料元件氧化行为分析

• 作 者: 朱庆山 邱学良 马昌文
• 机 构: 清华大学核能技术设计研究院!北京 102201,清华大学核能技术设计研究院!北京 102201,清华大学核能技术设计研究院!北京 102201
• 出 处: 核科学与工程
• 发表日期: 1999年04期
• 关键词: 高温气冷堆 燃料元件 事故工况 正常运行工况 抗氧化保护 氧化行为 抗氧化涂层 堆芯 平衡计算 放射性裂变产物

通过复杂化学平衡计算，对高温气冷堆抗氧化燃料元件在正常运行和极端事故工况下的氧化行为进行了理论分析。结果表明高温气冷堆在出现大量空气或者水进入堆芯的极端事故工况下，抗氧化燃料元件能够起抗氧化保护作用，保持燃料元件的完整性。然而在正常运行工况下，抗氧化燃料元件可能会发生活化氧化，抗氧化涂层的完整性可能会被破坏。通过计算提出适当提高He中CO浓度来防止抗氧化燃料元件被活化氧化。

Through the calculation of complex chemical equilibrium, the oxidation behavior of anti-oxidation fuel element in HTR reactor under normal operation and extreme accident conditions was theoretically analyzed. The results show that the high temperature gas-cooled reactor in the event of a lot of air or water into the core of the extreme accident conditions, the antioxidant fuel element can play an antioxidant protection, to maintain the integrity of the fuel element. However, under normal operating conditions, the oxidation resistant fuel elements may undergo activation oxidation and the integrity of the oxidation resistant coating may be destroyed. It is calculated that it is proposed to increase the CO concentration in He appropriately to prevent the oxidation-resistant fuel element from being activated and oxidized.