API 571 - API 571 Corrosion and Materials Practice Test
API 571 Hydrogen Damage 2
What is the primary mechanism by which H2S promotes hydrogen entry into steel in wet H2S service?
Select your answer
A
H2S increases operating pressure, forcing hydrogen in
B
H2S acts as a hydrogen recombination poison, allowing atomic hydrogen produced at the steel surface to be absorbed
C
H2S thermally decomposes at the surface to release hydrogen
D
H2S oxidizes the steel surface, creating a porous entry path
Hint
