After a repair, how long should a cathodically protected UST system be tested?

A cathodically protected underground storage tank (UST) system is designed to prevent corrosion and extend the life of the tank and its components. After any repair is conducted on such a system, it is essential to ensure that the cathodic protection is functioning properly to guarantee its effectiveness. The recommended testing interval after a repair is typically set at six months.

This timeframe allows enough time to assess whether the cathodic protection system is adequately shielding the UST from corrosion post-repair. It is crucial to confirm that the system will continue to adequately protect the tank and its contents from potential leaks or failures, which could arise due to undetected issues after any maintenance. Regular testing intervals, such as every six months, help ensure regulatory compliance and enhance the safety and environmental protection measures for UST systems. This proactive approach in monitoring enables owners and operators to identify and remedy any deficiencies in the cathodic protection system quickly.

The other durations suggested do not align with the recommended practice for ensuring the integrity of the cathodic protection after repairs have been made.