How often must tank linings be inspected for Category 1 tanks?

The correct answer pertains to the specific regulations governing the inspection of tank linings for Category 1 tanks. After the installation of a lining, it is required to conduct an inspection within 10 years to ensure the integrity and functionality of the lining material. This initial inspection sets a baseline for assessing the condition of the lining.

Subsequently, inspections must be conducted every 5 years thereafter. This schedule is designed to monitor any degradation or failure of the lining that may occur over time due to environmental factors or chemical exposure, which are critical for maintaining the containment and preventing leaks or contamination.

This approach is based on recognizing that tank linings are subject to gradual deterioration, and regular inspections are essential not only for compliance with regulations but also for ensuring safety and environmental protection. Maintaining this inspection schedule helps prevent potential issues that could lead to hazardous material leaks, protecting both public health and the environment.