To enhance safety, all new underground tanks must have which system in place?

The correct choice, corrosion protection systems, is essential for the safety of new underground tanks. These systems are designed to prevent corrosion, which is a significant risk for storage tanks containing hazardous materials, such as pesticides. Corrosion can lead to leaks, which pose environmental hazards and risks to public health.

By implementing corrosion protection systems, operators can significantly extend the life of the tanks and ensure they remain secure over time. These systems may include cathodic protection or coatings that are specifically designed to resist the damaging effects of the environment and the stored substances.

While fire suppression systems, emergency shutdown procedures, and regular maintenance checks are also crucial for safety, they serve different purposes. Fire suppression systems address the risk of fire, which is a valid concern, but they don't directly mitigate corrosion. Emergency shutdown procedures are important for overall emergency management and risk reduction, and regular maintenance checks are necessary for operational integrity but do not inherently protect against corrosion. Therefore, corrosion protection systems are foundational in ensuring the long-term safety and reliability of underground tanks.