Analysis and Treatment of Shell Reduction of Moisture Separator and Reheater for Nuclear Power Stations

LI Hongjun; Wang Jian; Yang Biao; YIN Kaiju; Shi Jingfeng; Zhou Yu; Peng Yuejun

doi:10.13832/j.jnpe.2017.S2.0124

Volume 38 Issue S2

Feb. 2025

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LI Hongjun, Wang Jian, Yang Biao, YIN Kaiju, Shi Jingfeng, Zhou Yu, Peng Yuejun. Analysis and Treatment of Shell Reduction of Moisture Separator and Reheater for Nuclear Power Stations[J]. Nuclear Power Engineering, 2017, 38(S2): 124-127. doi: 10.13832/j.jnpe.2017.S2.0124

Citation:

LI Hongjun, Wang Jian, Yang Biao, YIN Kaiju, Shi Jingfeng, Zhou Yu, Peng Yuejun. Analysis and Treatment of Shell Reduction of Moisture Separator and Reheater for Nuclear Power Stations[J]. Nuclear Power Engineering, 2017, 38(S2): 124-127. doi: 10.13832/j.jnpe.2017.S2.0124

Citation:

LI Hongjun, Wang Jian, Yang Biao, YIN Kaiju, Shi Jingfeng, Zhou Yu, Peng Yuejun. Analysis and Treatment of Shell Reduction of Moisture Separator and Reheater for Nuclear Power Stations[J]. Nuclear Power Engineering, 2017, 38(S2): 124-127. doi: 10.13832/j.jnpe.2017.S2.0124

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Analysis and Treatment of Shell Reduction of Moisture Separator and Reheater for Nuclear Power Stations

doi: 10.13832/j.jnpe.2017.S2.0124

1. Nuclear Power Institute of China Key Laboratory of Science and Technology on Nuclear Fuel and Materials, Chengdu, 610213, China;
2. CNNC Nuclear Power Operations Management Co. Ltd., Haiyan, Zhejiang, 314300, China

Received Date: 2017-08-14
Rev Recd Date: 2017-11-27

Abstract

Abstract

After long-term operation, the thickness of the shell of the 1# Moisture Separator and Reheater in CNNO Qinshan PhaseⅠPower Plant has been reduced. The analysis reveals that the flow accelerated corrosion is the root cause. If the corrosion is allowed to continue, the equipment strength will be further reduced, resulting in great operational security risk to the nuclear power station. Analysis of the repair process analysis and repairement of the moisture separator and reheater equipment with suitable welding material, welding procedure and heat treatment process can effectively improve the operation reliability of the moisture separator and reheater, and ensure the operation safety of the nuclear power station.
- Moisture separator and reheater（MSR）,
- Flow accelerated corrosion（FAC）,
- Weld