A form of material failureThe inability of a pipeline system to fulfill its intended function or meet the required performance criteria. Pipeline failures can have significant consequenc… caused by the ingress, diffusion, and subsequent interaction of hydrogenA natural gas element used in non-destructive testing, hydrogen is a chemical element with the symbol "H" and atomic number 1. It is the lightest and most abun… atoms within a susceptible material, which results in pipe degradation. It is a type of stress corrosion cracking (SCC)A form of corrosion-induced cracking that occurs when a susceptible material is exposed to a corrosive environment and subjected to tensile stresses. SCC can le… that occurs in the presence of both tensile stressStress that occurs when a material is subjected to pulling or stretching forces that elongates material. It is a normal stress component that acts perpendicular… and hydrogen.