Double-walled tanks are storage containers designed with two layers of walls. The outer wall provides an additional layer of protection, helping to prevent leaks and spills from the inner tank. This design is commonly used for storing hazardous materials, such as chemicals or fuels, ensuring safety and environmental protection. These tanks are often equipped with monitoring systems to detect any potential leaks between the walls. If a leak occurs, the outer wall can contain the substance, minimizing the risk of contamination. Double-walled tanks are widely used in industries like petroleum, chemical manufacturing, and waste management.