Localized corrosion attack on the galvanised steel pipes of the fire protection system

Galvanised steel serves as a base material for pipelines in fire protection systems. However, this system is known for its occasional corrosion failures. The Systems with residual water and oxygen access contribute to formation of macrocells due to different aeration, which can lead to severe damage...

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Published inKorose a ochrana materiálu Vol. 68; no. 1; pp. 28 - 42
Main Authors Košťúr, R., Kouřil, M.
Format Journal Article
LanguageEnglish
Published Prague Sciendo 01.03.2024
De Gruyter Poland
Subjects
Aeration
Corrosion
Fire protection
Floods
Galvanized steels
Localized corrosion
Steel pipes
Zinc
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Summary:Galvanised steel serves as a base material for pipelines in fire protection systems. However, this system is known for its occasional corrosion failures. The Systems with residual water and oxygen access contribute to formation of macrocells due to different aeration, which can lead to severe damage of the pipes. The aim of this work was to investigate the cause of localized corrosion on the galvanised pipes designated for the fire protection system. The results proved that the main cause of the fire protection pipe system was the residual water in the pipe. The influence of differential aeration on the corrosion of zinc and steel was studied by resistometric technique and showed no effect on the failure of material.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1804-1213
0452-599X
1804-1213
DOI:10.2478/kom-2024-0004