百万千瓦核电机组高低压加热器制造中质量问题的处理

Treatment of Quality Problems Occurring in Manufacture of High/Low-pressure Heaters in a 1000MW Nuclear Power Unit

针对百万千瓦核电机组常规岛高低压加热器制造过程中发生的一系列质量案例,分析了密封焊返修时划伤换热管、胀管超差及水压试验后锈蚀问题,提出了防范措施,为后续百万千瓦核电常规岛设备国内制造及监理提供了借鉴和参考。

To solve the problems occurring in the manufacture of high/low-pressure heaters in conventional island of a 1 000 MW nuclear power unit, such as scored heat exchange tubes produced in repairing of seal welds, out-of-tolerance expanded tubes and corrosion failure after water pressure testing, for which preventive measures were put forward. This may serve as a reference for manufacture and supervision of domestic equipment in conventional island of 1 000 MW nuclear power units.