Are shims allowed on tank legs to level the legs if they are made of steel?

In the context of the Maine Fuel Code, the use of shims on tank legs, particularly when those legs are made of steel, is not permitted. This prohibition is in place primarily due to safety and structural integrity concerns. Steel tank legs are designed to provide a stable and secure foundation for the tank, ensuring that it can safely hold fuel without risk of leaking or collapsing.

Using shims can create an unstable support system, leading to potential risks such as uneven weight distribution, which could compromise the tank's integrity and lead to leaks or spills. The regulations emphasize the importance of proper installation practices to ensure that tanks are level and secure without the use of shims that could introduce uncertainties regarding stability.

Thus, following the prohibition against shims ensures compliance with safety standards and preserves the structural integrity of fuel tanks.