Modern tank systems for heating oil stand for maximum security of supply and economic independence. Storing the energy in one's own tank allows oil heating system users to freely choose the supplier and the best price, because the consumer is free to decide on the timing of delivery.
Heating oil tanks are available in different versions: as underground tanks and nowadays mostly as double-walled safety tanks.
Their are two basic ways to store heating oil, either underground or above the ground. An oil storage tank is considered to be underground, if it is completely or partially embedded in the ground. In case of the common oil storage above the ground, the tanks are rarely placed outdoors but are usually installed inside the building – mostly in the basement or in the boiler room itself. As a basic principle, the requirement of secondary protection applies, which is met by the double-wall design with leak indicator or leakage detection system.
The principle of double safety always applies for the storage of heating oil. Thus, a collection area is legally stipulated for single-walled tanks, which prevents the oil from discharging into the environment in case of a leak. This collection area should be oil-tight, have an approved coating and be accessible for inspection. This implies that the distance between the tank and the walls should be adequately large.
Double-walled heating oil tanks need less space for installation. These plastic tanks offer a wide range of advantages: They have a long service life and provide maximum safety, so that even a stone-walled containment which is stipulated for the single-walled systems, is no longer necessary. Nowadays, tank manufacturers also assume a system warranty and provide users with additional safety.