For safe and reliable operation of NPP steam generators, it is required to remove the sludge from heat exchanging tubes and steam generator (SG) volume in due time. Chemical cleaning technology of SG secondary side during NPP cooling down will be used in Tianwan NPP, which was used to remove iron and copper oxides from steam generators secondary side in Russia NPPs and to resume the heat exchange capacity of heat exchange tubes. To validate and evaluate the effectiveness and safety of the SG cleaning formula during NPP cooling down provided by Russia (RF) for Tianwan NPP, cleaning effective tests and safety tests were done in autoclave with the chemical cleaning process parameters simulated. To compared with RF, cleaning effective tests and safety tests were done with A3B1 under the same condition. Cleaning effective test results showed that the simulated sludge for Tianwan NPP can be more effectively dissolved and removed with A3B1 than with RF. Cleaning safety test results showed that the general corrosion amount of 0Cr18Ni10Ti stainless steel was very low but the general corrosion amount of SA508-III steel was high both with A3B1 formula and the formula provided by Russia.
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2013 21st International Conference on Nuclear Engineering
July 29–August 2, 2013
Chengdu, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5578-2
PROCEEDINGS PAPER
Steam Generator Secondary Side Chemical Cleaning During Reactor Plant Cooling Down
Xiaojiao Xia,
Xiaojiao Xia
Nuclear Power Institute of China, Chengdu, Sichuan, China
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Juhua Wen,
Juhua Wen
Nuclear Power Institute of China, Chengdu, Sichuan, China
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Weigang Ma
Weigang Ma
Nuclear Power Institute of China, Chengdu, Sichuan, China
Search for other works by this author on:
Xiaojiao Xia
Nuclear Power Institute of China, Chengdu, Sichuan, China
Juhua Wen
Nuclear Power Institute of China, Chengdu, Sichuan, China
Weigang Ma
Nuclear Power Institute of China, Chengdu, Sichuan, China
Paper No:
ICONE21-16127, V001T01A028; 4 pages
Published Online:
February 7, 2014
Citation
Xia, X, Wen, J, & Ma, W. "Steam Generator Secondary Side Chemical Cleaning During Reactor Plant Cooling Down." Proceedings of the 2013 21st International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications. Chengdu, China. July 29–August 2, 2013. V001T01A028. ASME. https://doi.org/10.1115/ICONE21-16127
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