What should be done if a tank is suspected of leaking?

When a tank is suspected of leaking, the most appropriate action is to temporarily take it out of service and inspect it immediately. This is crucial for several reasons. Firstly, identifying and addressing leaks promptly is essential to prevent environmental damage, contamination of soil and groundwater, and potential safety hazards. By taking the tank out of service, it ensures that no further oil is dispensed or used from a potentially compromised tank, which can exacerbate the issue.

Immediate inspection allows for a thorough assessment of the tank's condition, determining the extent of the leak, and evaluating the necessary repairs or remedial actions required. This action also complies with safety regulations and best practices within the industry, which prioritize safety and environmental protection.

In contrast, other options do not appropriately address the risks associated with a leaking tank. Filling it with fresh oil does nothing to solve the underlying issue and could lead to more significant leaks. Leaving it as is puts the environment and nearby individuals at risk, while sealing it and monitoring would delay necessary actions that could prevent further issues.