What is the minimum required capacity of a spillage bund around a fuel storage tank in addition to the tank's content?

The minimum required capacity of a spillage bund around a fuel storage tank is set to be adequate to contain potential spills or leaks from the tank. The correct answer involves having a bund that can hold at least 110% of the total content of the tank. This standard is crucial for ensuring that in the event of a spill or overflow, there is sufficient space to contain all of the liquid, thereby minimizing environmental impact and ensuring safety.

This requirement is grounded in the principles of risk management and environmental protection, recognizing that fuel storage poses a significant risk should a leak occur. By adhering to this guideline, facilities can prevent significant contamination of the surrounding environment and comply with both legal and best practice standards for hazardous materials management.

The other options do not meet the minimum necessary requirements as they provide inadequate capacity for potential spills, which could lead to regulatory violations and increased environmental risk.