What type of cathodic protection would you use on a bare or poorly coated structure?

What type of cathodic protection would you use on a bare or poorly coated structure?

• A. Impressed Current Cathodic Protection
• B. Galvanic System
• C. Hybrid System
• D. Sacrificial Anode System

Answer: (A)

Impressed Current Cathodic Protection (ICCP) is the appropriate choice for protecting bare or poorly coated structures due to its ability to control and adjust the level of protection provided. This system involves the use of an external power source to drive a current to the structure, which effectively mitigates corrosion in more aggressive environments where high levels of current may be necessary. Unlike galvanic systems that rely on the natural potential differences between metals for protection, ICCP can deliver a continuous and adjustable supply of current, ensuring consistent protection even in challenging conditions. This is particularly beneficial for larger or more complex structures that have a high surface area or are subject to varying environmental influences. While options like sacrificial anode systems, which are passive and rely on the corrosion of less noble metals to provide protection, can be effective in some situations, they might not offer sufficient protection for more exposed or deteriorating surfaces. The hybrid system combines both impressed current and sacrificial anode technologies but may not provide the focused control that an impressed current system offers for severely corroded or bare areas.

Impressed Current Cathodic Protection (ICCP) is the appropriate choice for protecting bare or poorly coated structures due to its ability to control and adjust the level of protection provided. This system involves the use of an external power source to drive a current to the structure, which effectively mitigates corrosion in more aggressive environments where high levels of current may be necessary.

Unlike galvanic systems that rely on the natural potential differences between metals for protection, ICCP can deliver a continuous and adjustable supply of current, ensuring consistent protection even in challenging conditions. This is particularly beneficial for larger or more complex structures that have a high surface area or are subject to varying environmental influences.

While options like sacrificial anode systems, which are passive and rely on the corrosion of less noble metals to provide protection, can be effective in some situations, they might not offer sufficient protection for more exposed or deteriorating surfaces. The hybrid system combines both impressed current and sacrificial anode technologies but may not provide the focused control that an impressed current system offers for severely corroded or bare areas.