What is a key requirement of the closure of a heating oil tank?

Properly cleaning and purging the tank is a key requirement for the closure of a heating oil tank. This process involves removing all residual oil, sludge, and any contaminants from the tank, which is essential to prevent environmental contamination and ensure safety. If a tank is not adequately cleaned, the leftover materials can cause leaks or spills once the tank is out of service, leading to potential hazards.

Cleaning and purging also satisfies regulatory requirements set forth by environmental protection agencies, which aim to minimize the risk of contamination in the surrounding area once the tank is no longer being used. Additionally, removing flammable materials reduces the risk of fire hazards during the closure process and allows for a safe assessment of any structural weaknesses in the tank itself.