Study on Chemical Cleaning Formula for Steam Generator Secondary Side during Tianwan NPP Cooling Down
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摘要: 为验证冷停堆过程中蒸汽发生器二次侧化学清洗工艺的有效性和安全性,采用高压釜模拟冷停堆过程中蒸汽发生器二次侧化学清洗工艺条件,分别对俄配方和配方A3B1进行清洗有效性验证试验和安全性评价试验研究。试验结果表明,与俄配方相比,配方A3B1的清洗有效性和安全性均优于俄配方,更适合于田湾核电站蒸汽发生器二次侧沉积物化学清洗。Abstract: The effectiveness and safety of steam generator chemical cleaning process during reactor plant cooling down was validated in the test.Autoclave was used to simulate the process parameters of steam generator chemical cleaning process during reactor plant cooling down.The effectiveness and safety test of chemical cleaning was performed with Russia formula and A3B1 formula.Experimental results showed that A3B1 formula was more effective and safer than Russia formula for steam generator chemical cleaning.Experimental results also showed that chemical cleaning with composition A3B1 can effectively remove the sludge from SG secondary side of Tianwan NPP.
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