
Moving a plastic oil tank is not an easy task due to its size and weight. It is important to carefully plan the process and consider the risks involved, especially the possibility of leaks. The first step is to inspect the tank for any damage or leaks and drain and transfer the oil to temporary storage using a pump. The next step is to disconnect and dismantle the current fuel pipelines. Then, the tank needs to be transported to its new location, which may require special equipment to ensure it is handled carefully and avoid damage. Once in position, the tank is reconnected to the fuel line, which may need to be extended or replaced. Finally, a pressure test is conducted to ensure there are no leaks.
| Characteristics | Values |
|---|---|
| When to move a plastic oil tank | When the tank is old, damaged, or needs to be relocated for property changes. |
| Planning | Check for damage, leaks, cracks, discolouration, bulges, rust, and smell. Plan for the fuel line extension or replacement. |
| Weight | A plastic oil tank can be heavy depending on its size and whether it is empty or full. A 275-gallon oil tank weighs about 1380 lbs when half full. |
| Equipment | An engine hoist, casters, rollers, slings, and nylon ratchet binders. |
| People | It is recommended to hire professionals for the job. However, depending on the weight of the tank, it can be moved by one or a few people. |
| Safety | There are safety issues and regulations to consider, such as the risk of leaks, spills, and fire. |
| Regulations | OFTEC regulations state that tanks must be located on a platform or stand with at least 300mm clearance around the edge. Bunded tanks are recommended for extra protection. |
| Site assessment | An OFTEC-registered technician should assess the site and give clearance before relocation. |
| Oil transfer | Oil should be drained and transferred to temporary storage using a pump. Clean oil can be kept in a holding vessel and then fed back into the tank in its new location. |
| Tank transfer | The tank is disconnected, repositioned, and installed in its new location. |
| Fuel line | Depending on the new location, the existing fuel line may need to be extended or replaced. |
| Pressure test | A pressure test is conducted to ensure there are no leaks in the new setup. |
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What You'll Learn

Plan carefully to avoid leaks and environmental damage
Planning carefully to avoid leaks and environmental damage is crucial when moving a plastic oil tank. Firstly, assess the condition of your tank. Check for any cracks, rusting, dents, bulging, discolouration, or oil stains, which could indicate leaks. Plastic tanks can bleach in the sun, becoming more brittle and prone to breaking. If your tank is damaged, consider replacing it instead of relocating it.
Secondly, choose a suitable location for your tank. There are regulations regarding the installation of oil tanks, including their proximity to water sources, boreholes, drains, and hard surfaces that could enable spillage run-off. Tanks must also be located on a stable platform or stand with at least 300mm clearance around the edge. Consider the distance to the fuel line, as extending or replacing it can be challenging and costly.
Thirdly, plan the relocation process carefully. It is highly recommended to hire an OFTEC-registered engineer to oversee the relocation and ensure it is done safely and correctly. Do not attempt to relocate the tank yourself, as this can be dangerous and pose an environmental risk due to leaks. Drain and transfer the oil to temporary storage using a pump before attempting to move the tank.
Finally, be prepared for potential soil contamination at the old tank site. If the tank has previously leaked, the relocation process may uncover soil contamination that requires professional remediation. Properly dispose of any contaminated oil at a licensed site. By carefully planning and executing the relocation of your plastic oil tank, you can help prevent leaks and minimise environmental damage.
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Use an OFTEC-registered engineer
If you're looking to move your plastic oil tank, it is highly recommended that you use an OFTEC-registered engineer. OFTEC establishes the standards for competence within the domestic oil heating and cooking industry. By ensuring the quality of people and businesses working in this area, OFTEC maintains standards for reputable companies and consumers alike.
OFTEC-registered engineers are trained and approved competent persons who are approved by OFTEC to install and service domestic and commercial oil tanks. They will ensure that your tank is placed in a suitable location and is connected properly and securely. This includes following rules designed to limit the risks of oil contamination and meeting fire separation distances to protect the stored fuel from a fire or heat source.
In England and Wales, OFTEC-registered technicians can self-certify that their work complies with building regulations, saving you time and money on obtaining a Building Control Notice and organising an inspection. In Scotland, you may need to apply for a warrant. Your OFTEC-registered engineer will be able to advise you on these requirements.
It is important to choose a high-quality tank to ensure that you get many years of trouble-free use from it. OFTEC recommends that the chosen tank is manufactured to OFTEC Standards (OFS T100 for plastic or OFS T200 for steel). OFTEC also recommends carrying out regular visual checks between service visits and after periods of extreme weather conditions, which put tanks under additional stress.
Overall, using an OFTEC-registered engineer to move your plastic oil tank will ensure that the job is done safely, securely, and in compliance with all relevant regulations.
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Prepare the new location and base
Preparing the new location and base for your plastic oil tank is a crucial step in the relocation process. Here are some detailed instructions to help you get started:
First, choose a suitable location for your plastic oil tank. Consider the regulations and safety concerns regarding oil tank installations. Make sure the new location complies with OFTEC regulations, which dictate that tanks must be placed on a platform or stand with at least 300mm clearance around the edge. Additionally, take into account factors such as the proximity to controlled water sources, boreholes, or drainage systems to prevent spillage risks.
Next, prepare the base for your plastic oil tank. The base should be sturdy and level, providing a stable foundation for the tank. Depending on the specific requirements, you may need to build a new base or elevate the existing one. A concrete base is ideal, ensuring the tank remains stable and does not sink or twist. If you're building a new base, consider using materials like concrete or masonry to ensure a solid foundation.
If your tank is located outdoors, consider ways to hide it discreetly, such as behind an outbuilding or within a landscaped area. This can improve the aesthetic appeal of your space while also ensuring the tank is not an eyesore.
Before placing the tank on the new base, inspect the foundation for any signs of instability, such as cracking, sinking, or tilting. Ensure the base is strong enough to support the weight of the tank, especially if it's a large-capacity tank. If you're unsure about the stability or weight-bearing capacity, consult a professional or an OFTEC-registered technician for advice.
Lastly, consider the accessibility of the new location and base. Ensure there is adequate space for the tank to be manoeuvred into position and that it complies with any planning implications or regulations regarding the positioning of oil tanks relative to property boundaries. The location should also be easily accessible for future maintenance and inspections, as well as oil refills.
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Drain and transfer oil to temporary storage
Before draining and transferring the oil to temporary storage, it is important to carefully plan the process and consider seeking professional help. Moving an oil tank without professional help can be dangerous and may cause environmental damage due to leaks. An OFTEC-registered technician should be consulted to assess the site and ensure compliance with regulations.
To begin, inspect the oil tank for any damage or leaks. Check the exterior surface for cracks, rusting, dents, or bulging. For steel tanks, pay close attention to seams and welds, while for plastic tanks, focus on corners and joints. Ensure the foundation is stable and free from cracking, sinking, or tilting, as an unstable foundation can lead to spills and leaks.
If the tank is in good condition, you can proceed with draining the oil. It is recommended to use a pump to transfer the oil to a temporary storage vessel, such as drums or a holding tank. This process should be done carefully to avoid any spills or leaks, as fuel contamination can have severe environmental consequences.
After draining the oil, the tank will be ready for relocation. It is important to note that moving a heavy tank may require special equipment and should be handled by professionals to avoid damage or accidents.
Once the tank is relocated and installed in its new position, the oil can be transferred from the temporary storage back into the tank. It is advisable to conduct a pressure test to ensure the system's integrity. This can be done by using a low-pressure air source, gradually introducing air into the tank to create a pressure of 3-5 psi. Subsequently, a soapy water solution or leak detection fluid can be applied to the seams, welds, and fittings to identify any potential leaks. If bubbles appear, it indicates a possible leak that needs to be addressed.
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Disconnect, reposition, and reconnect
Before disconnecting and repositioning your plastic oil tank, it is important to carefully plan the process. Check for any damage or leaks in your tank. Inspect the exterior surface for cracks, rusting, dents, or bulging. If your tank is made of steel, pay special attention to seams and welds. If it is a plastic oil tank, focus on the corners and joints. Also, check the foundation for any signs of instability such as cracking, sinking, or tilting. Before relocating, drain and transfer the oil to temporary storage using a pump.
Once you have decided on a suitable position with an appropriate base, you can begin the move. It is best to plan to do this when you have used up most of the oil in the tank, leaving it nearly empty. Running your tank completely empty can cause problems for your boiler. An expert can then drain any remaining oil, which can be kept in a holding vessel and then fed back into your tank once it is repositioned.
After draining the oil, disconnect the tank. Then, reposition the tank in its new location. If you are moving the tank to a new location that is further away, you may need to extend or replace your fuel line. This can be the most difficult and disruptive part of the installation, so it must be carefully planned. Finally, reconnect the tank to your fuel line and transfer the oil from your temporary holding tank back into your relocated oil tank.
It is highly recommended to hire an OFTEC-registered engineer to help with the process. Moving an oil tank without professional help can be dangerous and pose an environmental risk due to leaks.
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Frequently asked questions
It is recommended that you hire an OFTEC-registered engineer to help you move your oil tank. Firstly, drain and transfer the oil to temporary storage using a pump. Your engineer will then disconnect and dismantle the current fuel pipelines that go from the house to the oil tank outside. Once the tank is fitted on the base in the new location, reconnect and adjust any required pipelines. Lastly, transfer the oil from your temporary holding tank back into your relocated oil tank.
Relocating a plastic oil tank can weaken any compromised areas of the tank’s structure or cause new damage and splits. If fuel spills, it can contaminate the ground or nearby water sources, leading to environmental damage and regulatory penalties. Lifting or moving a heavy tank without proper equipment can also result in accidents and injuries.
There are several signs that indicate that you need to replace your plastic oil tank. These include cracks, discolouration, bulges, rust, and a strong kerosene smell, which may indicate a leak.











































