What procedure is used to ensure a sacrificial anode is in proper operating condition?

The procedure used to ensure a sacrificial anode is in proper operating condition is the half cell to equipment voltage test. This testing method measures the potential difference between the sacrificial anode and the metal structure it is protecting, providing critical data about the anode's effectiveness.

When a sacrificial anode is functioning correctly, it will maintain a potential that helps to prevent corrosion of the metal structure, such as pipes or tanks. The half cell test uses a reference electrode and measures the voltage relative to the sacrificial anode. A proper voltage reading indicates that the anode is actively supplying electrons to the protected metal surface, thereby mitigating corrosion.

Regularly conducting this test allows for proactive maintenance and replacement of the anode if it is found to be ineffective, extending the lifespan of the structures it protects. This procedure is central to cathodic protection systems and is a critical component of corrosion management strategies within the electrical utility sector.