When considering oil storage solutions, you’re likely deciding between a bunded or single skin oil tank. You might already have some knowledge but are unsure which to opt for. Or you might be completely new to the topic and wondering what does a bunded oil tank mean?
This guide will help you decide which oil tank is right for you by comparing single skin and bunded oil tanks. We’ll look at bunded oil tank costs and outline the benefits, such as leak prevention and compliance with regulations, while also acknowledging when single skin tanks are appropriate. But first, what does a bunded oil tank mean? Let’s find out.
What does a bunded oil tank mean?
A bunded oil storage tank is a double skin. It is effectively two tanks in one. The ‘inner’ tank stores the oil, and a second tank acts as a protective layer against leaks and spills. There is a small gap between the two tanks, known as the bund. This collects the spillage, providing several benefits, such as leak protection.
The bunded oil tank option is the most common option but there are certain circumstances where a single skin oil tank is appropriate.
Key differences: Bunded or single skin oil tank
The biggest difference between the two tanks lies in the construction. A single skin oil tank has no protective layer. A bunded oil tank is also known as a double skin oil tank. This difference in construction has a knock-on effect.
Safety features
Damage to a single skin oil tank, such as a fracture, crack, or dent, can cause oil to leak into the environment and contaminate water sources. This contamination poses a risk to both wildlife and human health. Additionally, the tank owner may be held financially responsible for the substantial cost of the cleanup.
In contrast, the protective layer in the bunded oil tank will prevent oil from leaking out into the environment. This line of defence keeps the oil within the tank.
Bunded oil tank cost
When choosing either a bunded or single skin oil tank, one of the things you might consider is the cost. Often, a bunded oil tank costs more than a single skin oil tank for comparable capacity sizes.
Therefore, if your budget is tight, a single skin oil tank might be the best option for you as long as you comply with the oil storage regulations in your local area.
Benefits of a bunded oil tank
A bunded tank is the better choice for storing a large amount of oil, as it offers superior protection against leaks and spills. In certain situations, bunded tanks may be mandated by law. There are also several other benefits when deciding between a bunded or single skin tank.
Oil storage regulation compliance
Domestic oil tanks that exceed 2,500 litres in capacity and commercial oil tanks that exceed 200 litres in capacity must be bunded in the United Kingdom. In other words, if you need to store a large amount of oil, the only option is to go for a bunded oil tank.
A bunded tank might be required even when storing less than the amount listed above. For example, in Wales, all oil tanks over 200 litres need to be bunded with a 110% capacity.
It also depends on the immediate surroundings. Specifically, if your tank is within 10 meters of controlled water or within 50 meters of a drinking water source, it must be bunded. Additionally, the proximity of your oil storage tank to drains, manholes, or wells must be considered. A bunded oil tank is necessary if a potential spill could reach any of these.
Leak prevention
If damage occurs to a single skin oil tank, there is no leak protection. A bunded oil tank offers leak prevention and protects the environment. Environmental damage can occur, and there is a risk of health issues if oil enters the water system through drains or other means.
Cost savings
While the upfront costs of a bunded oil tank are likely to be higher, there can be savings further down the line. This includes lower insurance premiums because there is less chance of something going wrong with a bunded oil tank. It also reduces the likelihood of having to pay to cover the costs of the oil spill yourself.
Reducing personal concerns
Having a bunded oil tank can also put your mind at ease because you don’t have to worry about something going wrong, such as an oil spill.
This guide should help you make up your mind on whether to go for a bunded or single skin oil tank. Our huge range covers both single-skin oil tanks and bunded oil tanks. Shop our extensive collection today. If you need any advice on choosing the right oil tank for you, our friendly team is on hand and ready to help. Just get in touch.