If you exceed the 90% fill limit for a fuel oil tank, what system is at risk?

When a fuel oil tank exceeds the 90% fill limit, the primary system at risk is the overfill protection system. This system is specifically designed to prevent the tank from becoming overfilled, which can lead to dangerous spills or leaks. An overfilled tank can contribute to environmental contamination, potential fire hazards, and safety issues for personnel involved in refueling operations.

The overfill protection system typically includes alarms and automatic shut-off mechanisms that are triggered if the tank reaches a certain capacity. By adhering to the 90% fill limit, operators ensure that there is adequate space for expansion of the fuel and prevent the risk of spillage that could occur as temperatures fluctuate or if there are discrepancies in the filling process.

The other options, while important in their own right, do not directly relate to the immediate operational and safety concerns associated with exceeding the fill limit of a tank. Communication systems, fire alarm systems, and heating systems may all play crucial roles in the overall safety and management of a facility’s operations, but they do not specifically address the consequences of overfilling a fuel oil tank.