Corrosion Control (13)

Criticality: High
Progress: Not Addressed
Score: 40
DOT Relevance: §192.451 – §192.491

Description of Key Area

Corrosion control refers to minimum requirements for the protection of metallic pipelines from external, internal and atmospheric corrosion.

Discussion of Criticality

An analysis of corrosion control for hydrogen pipe must begin with the pipe itself and take into consideration not only factors about the pipe but also those things that impact the pipe, such as type of welding process, procedure, post weld heat treatment and the internal and external environment to which the piping system is subjected. The presence of moisture in hydrogen gas is detrimental and generally “dry” hydrogen is typically a minimum requirement (dew point of -48°C (-54°F)).

Discussion of Progress

No information found.

Recommendations

Research should be conducted on corrosion control of hydrogen pipe including studies of coatings to be used, cathodic protection, electrical isolation, and interference currents. Standards should be established and incorporated by reference into the federal code. These standards should address the use of coatings, cathodic protection, external electrical isolation, external interference currents, internal and external monitoring, external test stations, test leads, atmospheric corrosion control and monitoring and remedial measures for both transmission and distribution lines for steel pipes used for hydrogen transmission and distribution lines.