Open AccessSelected types of corrosion degradation of pipelines
Author(s) -
Mária Hagarová,
Jana Cervová,
F. Jaš
Publication year - 2015
Publication title -
koroze a ochrana materiálu
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.228
H-Index - 7
eISSN - 1804-1213
pISSN - 0452-599X
DOI - 10.1515/kom-2015-0010
Subject(s) - cathodic protection , corrosion , materials science , degradation (telecommunications) , metallurgy , perforation , pipeline transport , chloride , electrochemistry , anode , electrode , environmental science , environmental engineering , engineering , chemistry , telecommunications , punching
The paper deals with corrosion degradation of gas pipeline.Pipelines play very important role as means transportinggas media over long distances from producers to end-users.Gas pipelines present a risk of potential corrosion degradationthat can result in their failure. Corrosion on internal surfacesof steel pipes takes place in CO2, H2S, H2O and chloride environment.Degradation of steel results in loss of mechanicalproperties, reduction in thickness and ultimate perforation andfailure. Corrosion is the electrochemical process that involvesthe fl ow of electrical currents on a micro or macro scale. Forcorroding steel, the anodic and the cathodic reactions producesthe electrochemical cell. Corrosion protection of internalpipeline surface is based mainly on chemical composition ofgas and the use of inhibitors. Corrosion protection of the externalsteel surface of the product line involves coatings andcathodic protection.