scholarly journals Steam generator chemical cleaning demonstration test No. 1 in a pot boiler. [PWR]

1981 ◽  
Author(s):  
G. L. Key ◽  
M. H. Helyer
Keyword(s):  
Steam Generator ◽  
Chemical Cleaning

Applicability of Chemical Cleaning Process to Steam Generator Secondary Side, (I)

2004 ◽  
Vol 41 (1) ◽  
pp. 44-54 ◽  
Author(s):  
Kazutoshi FUJIWARA ◽  
Hirotaka KAWAMURA ◽  
Hiromi KANBE ◽  
Hideo HIRANO ◽  
Hideki TAKIGUCHI ◽  
...  
Keyword(s):  
Steam Generator ◽  
Cleaning Process ◽  
Chemical Cleaning ◽  
Secondary Side

Pitting Corrosion and its Countermeasures for Pressurized Water Reactor Steam Generator Tubes

CORROSION ◽  
2006 ◽  
Vol 62 (10) ◽  
pp. 905-910 ◽  
Author(s):  
D. H. Hur ◽  
M. S. Choi ◽  
D. H. Lee ◽  
M. H. Song ◽  
J. H. Han
Keyword(s):  
Steam Generator ◽  
Pitting Corrosion ◽  
Copper Alloys ◽  
Pressurized Water Reactor ◽  
Secondary System ◽  
Chemical Cleaning ◽  
Pressurized Water ◽  
Water Reactor ◽  
High Copper Content ◽  
Steam Generator Tubes

Abstract Pitting corrosion was the primary cause of the Alloy 600 (UNS N06600) steam generator tube degradation in a Korean pressurized water reactor (PWR) plant. Pulled tube examinations and remedial measures were carried out to mitigate the pitting. Based on the destructive examinations, the main causes of pitting corrosion were considered to be the following: accumulated sludge with a high copper content due to corrosion of copper alloys in the secondary system, acidic crevice conditions caused by chloride from condenser leakage, and ingress of air during layup. Countermeasures such as copper alloy replacement, water chemistry control, and chemical cleaning were implemented to mitigate the pitting. Chemical cleaning was evaluated as the most effective.

Steam Generator Secondary Side Chemical Cleaning During Reactor Plant Cooling Down

2013 ◽  
Author(s):  
Xiaojiao Xia ◽  
Juhua Wen ◽  
Weigang Ma
Keyword(s):  
Heat Exchange ◽  
Steam Generator ◽  
Exchange Capacity ◽  
General Corrosion ◽  
Test Results ◽  
Steam Generators ◽  
Chemical Cleaning ◽  
Safety Test ◽  
Cleaning Technology ◽  
Secondary Side

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.

Effects of curative and preventive chemical cleaning processes on fouled steam generator tubes in nuclear power plants

2017 ◽  
Vol 323 ◽  
pp. 120-132 ◽  
Author(s):  
C. Goujon ◽  
Th. Pauporté ◽  
A. Bescond ◽  
C. Mansour ◽  
S. Delaunay ◽  
...  
Keyword(s):  
Steam Generator ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Chemical Cleaning ◽  
Steam Generator Tubes

Effect of Chemical Cleaning on Steam Generator Tube Performance

2002 ◽  
Vol 23 (1) ◽  
pp. 38-47 ◽  
Author(s):  
A. Sridharan ◽  
L. E. Hochreiter ◽  
F.-B. Cheung ◽  
R. L. Webb
Keyword(s):  
Steam Generator ◽  
Chemical Cleaning ◽  
Steam Generator Tube
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