In the absence of a specific plan, anodes for cathodic protection of underground piping systems should be arranged how?

For effective cathodic protection of underground piping systems, the arrangement of anodes is crucial to ensure that the entire length of the pipe is adequately protected from corrosion. Positioning magnesium anodes vertically at least five feet from the center of the pipe trench provides an ideal configuration. This setup allows for optimal current distribution, which is essential for corrosion prevention.

The vertical orientation helps ensure that the anodes can effectively deliver cathodic protection along the entire length of the piping. Installing them at a distance from the pipe allows for better diffusion of the protective current. This configuration minimizes the risk of shielding or other interference that could occur if anodes were placed too close or inappropriately.

Additionally, having multiple anodes enhances the overall effectiveness of the system as they collectively provide a stronger protective current, thereby reducing the potential for corrosion due to soil and environmental factors. This strategic arrangement is based on best practices in corrosion prevention and is supported by industry standards and guidelines for underground storage tank operations.