In the context of newly installed pressurized piping for underground storage tanks (USTs), the most acceptable form of leak detection combines both line leak detection and interstitial monitoring. This dual approach provides a higher level of safety and reliability in detecting leaks.
Line leak detection systems are designed to identify any leaks in the piping by monitoring the pressure and flow characteristics of the system. They are sensitive to even small leak scenarios, allowing for quick identification of issues that could pose environmental hazards or financial loss. This type of detection is crucial for pressurized systems that may experience leaks due to the nature of their operation—where fuel is continuously moving and pressurized.
Interstitial monitoring, on the other hand, checks for leaks in the space between the primary containment (piping) and the secondary containment barrier, such as a double-walled pipe. This adds an additional layer of protection and allows for the detection of leaks that may not immediately affect the primary system.
By integrating line leak detection with interstitial monitoring, operators can ensure that they are adhering to regulatory requirements and enhancing the safety of their UST systems. This comprehensive approach minimizes the risks associated with leaks, making it the preferred method for newly installed pressurized piping in most states.