t = 0.5 mm/year 5 mm = 10 years A pipeline is protected using cathodic protection, and the current density is set to 10 mA/m². If the pipeline has a surface area of 100 m², what is the total current required?
Using the pitting corrosion equation:
t = r d
where \(t\) is the time to failure, \(d\) is the wall thickness, and \(r\) is the corrosion rate.
The following are some solved problems in corrosion engineering: A steel pipe is exposed to a marine environment, and the corrosion rate is measured to be 0.1 mm/year. If the pipe has a wall thickness of 10 mm, how long will it take for the pipe to fail? The following are some solved problems in corrosion
Using the cathodic protection equation:
Using the corrosion rate equation:
I = i × A