What level of leak must Automatic Line Leak Detectors detect at 10 psi?

Automatic Line Leak Detectors (ALLDs) are critical components used in underground storage tank systems to ensure safety and compliance with environmental regulations. They are designed to detect leaks in fuel lines and must meet specific performance standards.

When considering the detection capabilities of these systems, a leak detection threshold is established. At a pressure of 10 psi, the required detection level is essential to minimize financial losses and environmental harm from potential leaks. The correct answer, which indicates a 3 gallons per hour (gph) detection capability, aligns well with established standards set by regulatory agencies.

This level of detection ensures that even small leaks can be identified promptly, allowing for quick remedial actions to mitigate any potential contamination of the surrounding environment. Additionally, setting the threshold at 3 gph balances the need for sensitivity while reducing the likelihood of false alarms in monitoring fuel systems.

In contrast, lower or higher detection thresholds, such as 1 gph, 2 gph, or 4 gph, may either fail to catch substantial leaks that could occur or create unnecessary complications in monitoring systems. Thus, the 3 gph standard serves an essential role in safeguarding both environmental health and compliance with regulatory requirements.