Sylvie Willis
Removing fuel from an inground tank is a complex process that requires careful consideration of safety measures and disposal methods. Old fuel can damage your tank and cause engine problems, so it is essential to identify stale fuel and understand your tank's characteristics, such as size, material, and type. Before attempting fuel recovery, it is crucial to wear protective gear, including gloves, goggles, and a respirator mask, and have a fire extinguisher nearby. The removal process typically involves using a fuel siphon pump to transfer the fuel to a certified gas can for responsible disposal, avoiding contamination of the ground or drains. Additionally, proper tank maintenance includes cleaning and sealing to address issues like rust and scale buildup.
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What You'll Learn
Identify old fuel
Identifying old fuel in an underground tank is a crucial step before fuel recovery and tank removal. Here are some ways to identify old fuel and assess its condition:
Visual Inspection
One of the simplest methods to identify old fuel is through a visual inspection. Pour a small amount of the questionable fuel into a clear glass container and compare it with a sample of fresh fuel. If the old fuel appears very dark, cloudy, or has visible gummy deposits, sediment, rust, or dirt, it is likely contaminated and needs to be disposed of properly. Additionally, if you notice a layer of water at the bottom of the container, it indicates water intrusion into the tank, which can lead to rust and other issues.
Odour
Old fuel often develops a sour smell compared to fresh fuel. By taking a cautious whiff of the fuel samples, you can sometimes identify if the fuel has gone bad.
Water Intrusion
As mentioned earlier, water intrusion in fuel tanks can lead to rust and other issues. One way to check for water in the tank is to pump water through the fuel lines into the burner. If the metal parts of the oil filter start to rust, it confirms the presence of water in the tank. However, it's important to note that water can also enter the tank through condensation or a bad oil delivery.
Underground Tank Indicators
If you suspect the presence of an underground tank, there are a few indicators to look for. Outside your home, check for vent pipes, typically visible about 6 to 12 inches above the ground. These pipes are approximately 2 inches wide and have a cap on top. Vent pipes were used to provide ventilation for underground oil tanks. Another indicator is fill valves, which were once used as access points for filling underground oil tanks. If you find a fill valve in your yard or near your gas meter, it's likely that there is an abandoned oil tank underground.
Testing and Inspection
Underground fuel storage tanks should be regularly inspected and tested for leaks, as they pose serious environmental and safety hazards. Testing methods include pressure testing, soil testing, and checking for water intrusion. Ultrasound and ground-penetrating radar can also be used to create images of the tank and identify any leaks.
It is important to note that identifying old fuel is just the first step. Once identified, proper disposal methods, such as using certified containers and disposal sites, should be followed to ensure safety and environmental protection. Additionally, seeking professional help for fuel tank removal and disposal is recommended due to strict regulations and the potential risks involved.
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Use a fuel siphon pump
To recover fuel from an in-ground tank, you can use a fuel siphon pump. This is a safe and easy way to siphon gas without getting your hands dirty or risking exposure to fumes. Here's a step-by-step guide on how to use a fuel siphon pump:
Firstly, it is important to understand your tank's basic characteristics, such as its size, material, and type. This information will guide you in the fuel removal process. Old fuel can damage your tank if not removed promptly, and larger tanks with more fuel can complicate the process.
Next, gather the necessary safety equipment. This includes durable gloves to protect your hands, safety goggles to shield your eyes, and a respirator mask to protect yourself from harmful fumes. It is also crucial to have a fire extinguisher nearby as fuel removal is a fire risk.
Now, you can begin the fuel siphoning process:
- Place a gas can on the ground beneath the tank. Ensure you use a certified gas can to store the old fuel once it is removed.
- Run the tubing from the tank to the gas can. Make sure to use the correct ends of the tubing - one end is designated for liquid to enter, and the other end is for liquid to leave.
- Start pumping. Different siphon pumps work in various ways, so refer to the instructions provided with your pump.
- Monitor the flow of gas. Once the gas is flowing freely, gravity will do the rest of the work.
- When you near your desired stopping point, raise the end of the tubing or the container to stop the flow of gas. If using an automatic pump, you may need to turn it off.
- Remove the siphon pump from the tank. Ensure the tubing is free of excess gas before removing it from the tank.
- Close the gas tank and seal the gas can. Disassemble and store your siphon pump, following the provided instructions for cleaning if necessary.
Remember to dispose of the old fuel responsibly. Never pour it into the ground or down drains.
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Wear safety equipment
When recovering fuel from an in-ground tank, it is important to wear the appropriate safety equipment to protect yourself from potential hazards. Here are some key considerations for the type of safety equipment you should wear:
Respiratory Protection: Wear a respirator mask to protect your lungs from inhaling harmful fumes and vapors. Old fuel can emit toxic gases, and the confined space of an in-ground tank can increase your exposure to these fumes.
Eye and Face Protection: Safety goggles are essential to shield your eyes and face from any accidental fuel splashes or debris. Old fuel can cause skin and eye irritation, so it is crucial to have a physical barrier for protection.
Hand Protection: Durable gloves will protect your hands from skin irritation and any sharp objects you may encounter during the fuel recovery process. Look for gloves that are resistant to chemicals and provide a good grip to handle tools and equipment effectively.
Protective Clothing: Wear long sleeves and pants made from durable, flame-resistant material. Avoid wearing synthetic or loose-fitting clothing that could melt or catch fire easily. Ensure your clothing covers as much skin as possible to minimize direct skin contact with fuel and potential contaminants.
Footwear: Choose sturdy, closed-toe shoes or boots with slip-resistant soles. Your footwear should provide ankle support and protect your feet from any falling objects, spills, or sharp objects.
In addition to wearing the appropriate safety equipment, it is crucial to have a fire extinguisher readily available during the fuel recovery process. Old fuel is highly flammable, and having a fire extinguisher nearby will allow you to respond quickly in case of a fire or fuel ignition.
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Dispose of old fuel responsibly
Old fuel can be hazardous and, if not removed promptly, can damage your fuel storage tank. It is important to dispose of old fuel responsibly.
Firstly, you need to identify if the fuel in your tank is old. Old fuel often changes colour over time, so if it looks dark or murky, it is likely old. It may also have a sour or foul smell, unlike fresh fuel. If your equipment is cutting out, running rough, or not starting at all, old fuel could be the cause. Finally, think about how long the fuel has been sitting there. Fuel typically starts to go bad after about six months without stabilizers.
Once you have identified that the fuel in your tank is old, you can start the removal process. You will need a fuel siphon pump to transfer the old fuel from your tank to a certified gas can. It is important to wear safety equipment during this process, including durable gloves, safety goggles, and a respirator mask. You should also have a fire extinguisher nearby as a safety precaution.
After you have removed the old fuel, you need to dispose of it properly. Do not pour it into the ground, down drains, or into storm drains, as this is harmful to the environment and your water supply. It is also illegal. Instead, take it to a facility that can properly and safely handle it, such as a local HHW facility or landfill that accepts hazardous materials. Some municipalities offer free hazardous waste disposal services, so check with your local government.
If you are disposing of an above-ground fuel tank, you may be able to take it to a local landfill for a nominal fee. One end of the tank must be cut off, and holes must be punched in the other end. It is recommended that you use a grease-dissolving agent to clean the tank before disposal.
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Clean and restore the tank
When restoring a fuel tank, the first step is to clean the exterior, especially the area around the fuel level sender. Even if the tank appears clean on the outside, the inside may be a different story. Years of rust and debris can accumulate inside, which can ruin your fuel system.
Before cleaning the tank, it is important to inspect it thoroughly to determine the severity of the corrosion. Check the exterior for damage, including deep dents, large cracks, or severe impacts. If the rust has led to structural issues, the tank may need to be replaced.
To clean the inside of the tank, you will need a cleaning solution. You can use a commercial kit, such as the three-component kit from KBS Coatings, which includes a sealer, rust remover, and metal etch/cleaner solutions. Alternatively, you can create your own solution by mixing AquaKlean with hot water or using a degreaser like POR 15, diluted with warm water.
Once you have prepared your cleaning solution, insert a length of chain or a handful of loose nuts and bolts into the tank. These agitators will help knock the rust, scale, and debris from the surface. Seal the tank and turn it vigorously so that the solution coats all surfaces. You can also use a leaf blower to help dry the inside of the tank.
After the initial cleaning, drain the solution and inspect the interior of the tank. Repeat the cleaning process as necessary until the tank is deemed clean. Rinse the tank with water and drain it until the water runs clear. Then, leave the tank to dry thoroughly.
Once the tank is dry, you can apply a rust prevention solution, such as KBS RustBlast or POR 15 Metal Prep. These solutions will neutralize any remaining rust and prevent further development. Seal the tank and manipulate it so that the solution reaches every part of the interior. Finally, rinse and dry the tank once more before refilling it with fuel.
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Frequently asked questions
Old fuel often changes colour over time, so if it's dark or murky, it's likely old. It may also have a sour or foul smell, and your equipment may be cutting out, running rough, or not starting. If the gas has been sitting for more than six months without stabilizers, it has probably gone bad.
You will need a fuel siphon pump to remove the fuel, as well as a certified gas can to store the old fuel. You should also wear safety equipment, including gloves, goggles, and a respirator mask. Have a fire extinguisher on hand as well.
Make sure to wear the safety equipment mentioned above. In addition, ensure that the receptacle you use to store the old fuel is lower than the in-ground tank and within range of the hose.
It is important to dispose of old fuel responsibly. Do not pour it into the ground or down drains. Contact your local waste management authority for guidance on proper disposal methods.
