ADVANTAGES AND DISADVANTAGES OF CATHODIC PROTECTION SYSTEMS
SACRIFICIAL ANODES
ADVANTAGES |
DISADVANTAGES |
|
| There is no need of an external power supply |
Modest motive work | |
| There is no need of adjustments | Modest amount of emitted current | |
| It is easy to install | The installation might be expensive if realized after the network has been installed | |
| No interference problems | Buried structures with faulty coating and the bare ones require many anodes | |
| The number of anodes can be increased even after the installation | It is ineffective in soils with high resistivity | |
| The number of anodes can be increased even after the installation | Protection may not be guaranteed in presence of stray currents | |
| It provides a uniform distribution of current | It is not suitable for the protection of medium-large surfaces | |
| Anodes installation is not expensive if it is done when constructing the network itself | ||
| No rights of use in the areas surrounding the structure | ||
| Notification to competent authority is not required as it is a “0 class” installation | ||