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What is a common feature of single wall tanks equipped with ATGs?
They can only be used for non-flammable liquids
They are typically underground
They serve as a primary method of leak detection when programmed
They must always be vented outside
The correct answer is: They serve as a primary method of leak detection when programmed
Single wall tanks equipped with Automatic Tank Gauges (ATGs) are designed to monitor the level and volume of liquids stored within the tank. A primary function of ATGs is to detect leaks by measuring the liquid level and alerting operators if there are discrepancies that indicate a loss of product. This capability makes leak detection a critical feature of these tanks, especially in preventing environmental hazards and ensuring compliance with safety regulations. When properly programmed, ATGs can provide real-time monitoring and alerts, thereby enhancing the safety and integrity of the tank system. This automatic monitoring minimizes the labor-intensive process of manual checks and helps ensure that any potential leaks are identified quickly, thus mitigating risks associated with underground storage tanks. Other options may incorrectly suggest limitations or conditions that do not inherently correlate with the core function of ATGs in single wall tanks, highlighting why C stands out as the correct answer.