Mechanism of Fuel Assembly Bowing in PWR and Preventive Measures
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摘要: 燃料组件弯曲过大可带来装卸料困难、控制棒不能完全下插、燃料组件破损、象限功率倾斜等问题,避免燃料组件弯曲过大对压水堆核电站的安全运行有重要的意义。本文介绍了燃料组件弯曲的现象及影响,归纳分析了燃料组件弯曲的影响因素、机理及规避措施。Abstract: Excessive fuel assembly bowing may induce reloading or unloading difficulties,incomplete control rod insertion,fuel assembly defect,and quadrant power tilts.To avoid fuel assembly excessive bowing is import for PWR safety operation.This paper analyzes the phenomenon of fuel assembly bowing and its impact,the factors that affect assembly bowing,mechanism and preventive measures of assembly bowing.
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Key words:
- PWR /
- Fuel assembly /
- Assembly bowing
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