You can find three main types of generator fuel tanks. These are sub-base, above-ground, and underground tanks. Each type has special benefits for how your generator works and stays safe. Many people pick above-ground tanks because they are simple to move. But these tanks need more care and cleaning. Sub-base tanks are placed right under your generator. They often have two walls to give extra safety. Underground tanks are buried and hidden from view. They stay safe from bad weather and are good for storing fuel for a long time. Picking the best generator fuel tank helps stop leaks. It keeps fuel fresh and lowers danger.

• Above-ground tanks: Easy to reach, but need lots of checks.

• Sub-base tanks: Under the generator, often have two walls.

• Underground tanks: Buried for safety, keep fuel safe from weather.

Tip: Storing fuel the right way in approved tanks makes your generator safer and helps it work well.

Key Takeaways

• There are three main types of generator fuel tanks. These are sub-base, above-ground, and underground tanks. Each type has its own benefits and uses.

• Sub-base tanks fit under the generator to save space. They have double walls to keep fuel safe. These tanks hold less fuel and need refilling often.

• Above-ground tanks are simple to reach and fix. They need protection from bad weather and fire dangers.

• Underground tanks can store a lot of fuel. They stay safe from weather because they are hidden. These tanks cost more and need careful checks for leaks.

• You should inspect your tank often. Install it the right way and follow safety rules. This keeps your fuel tank safe and your generator ready.

Types of Generator Fuel Tanks

There are three main types of generator fuel tanks. Each type has special features for different uses. You can find sub-base tanks, above ground tanks, and underground diesel fuel tanks. People use these tanks at homes, businesses, and factories. These tanks help your generator work safely and well.

Sub Base Generator Fuel Tanks

Sub-base tanks go right under your generator. These tanks save space and are easy to put in. They often have two walls to stop leaks. Most sub-base tanks hold less than 1,000 gallons. Many are much smaller, about 100 gallons. Their height is between 8 and 40 inches. They fit under the generator set.

People sometimes call sub-base tanks belly tanks. These tanks are good for short backup times or if you refill fuel often. Double-wall tanks help keep leaks inside. You must follow rules like NFPA 30 and UL 142 when you install them. Local laws may need extra fire safety or space between tanks. Sub-base tanks are usually inside, so they need alarms and spill stops.

Note: Sub-base tanks save space, but you should check them often for leaks.

Common Subcategories:

• Belly tanks: Go under the generator, save floor space.

• Day tanks: Small tanks for daily use, can have one or two walls.

• Single wall tanks: Basic tanks, need extra spill trays.

• Double-wall tanks: Two layers for leaks, safer for sensitive places.

Above Ground Generator Fuel Tanks

Above ground tanks are easy to reach and take care of. You can see these tanks outside or in special rooms. Most above ground tanks are made of steel. Double-wall tanks are common and help stop leaks. These tanks can hold a lot of fuel. They are good for using your generator for a long time.

Above ground tanks have dikes that hold more than the tank's size. These tanks must stay away from buildings and dangers. Fire-safe rooms and vents help keep fuel safe. You must check these tanks every month and put warning labels on them. You can pick single wall or double-wall tanks. Double-wall tanks are safer from leaks.

• Steel tanks: Most used, strong and fire-safe.

• Polyethylene tanks: Used less, do not rust, need more care.

• Double-wall tanks: Safer, meet UL 142 rules, need daily checks.

Tip: Above ground tanks are easy to check, but you must keep them safe from weather and fire.

Underground Diesel Fuel Tanks

Underground diesel fuel tanks are buried in the ground. You use these tanks to store lots of fuel for your generator. Underground tanks are made of fiberglass or steel with special covers to stop rust. These tanks hold more than 1,000 gallons. They are great for storing fuel for a long time.

You must follow EPA rules for underground tanks. These rules say you need leak checks, spill stops, and rust protection. You must check these tanks every month and test leak alarms every year. Underground tanks need two walls and alarms. These tanks are surrounded by sand, gravel, or concrete for safety.

• Water in the tank: This is common, fix it by draining and sealing.

• Rust: Happens from water and germs, stop it with strong materials and checks.

• Damage: Soil or roots can break tanks, so you must prepare the ground right.

Alert: Underground diesel fuel tanks need careful setup and checks to stop leaks and protect the environment.

Materials Used:

• Steel: Strong, meets safety rules, used in most above ground and sub-base tanks.

• Polyethylene: Does not rust, needs less care, used in some underground tanks.

• Aluminum: Lighter, does not rust, used in tanks you can move.

Storage and Capacity:

• Sub-base tanks: Usually less than 1,000 gallons, best for short-term use.

• Above ground tanks: Come in many sizes, can hold lots of fuel for long use.

• Underground tanks: Hold more than 1,000 gallons, best for long-term diesel storage.

Callout: Picking the right tank helps keep your generator safe, works well, and ready for emergencies.

Features of Generator Fuel Tanks

Capacity and Installation

You should think about how much fuel the tank holds. Indoor tanks are smaller because of safety rules. NFPA 110 says indoor tanks can only hold 660 gallons. You must put these tanks in rooms with good airflow. Keep them away from things that can catch fire. Fire-rated doors and exhaust fans help stop fires. You also need fire extinguishers and smoke alarms close by. Outdoor tanks can hold more fuel. They are easier to take care of. You do not need special fans outside. But you must keep outdoor tanks safe from weather and theft.

• Indoor tanks: Hold less fuel, need good airflow, and fire safety.

• Outdoor tanks: Hold more fuel, easy to reach, need weather covers and locks.

Tip: Always check your local rules before putting in a tank. Some places have extra rules for fire and storage.

Materials and Construction

You can choose tanks made from steel or polyethylene. Steel tanks are tough and cost less at first. They work well outside but can get rusty. You need to check them often for rust. Polyethylene tanks last longer and do not rust. They cost more to buy and put in. But you spend less money fixing them. Both types can have one wall or two walls. Double-wall tanks have two layers. The outside layer catches leaks from the inside. Leak sensors between the walls warn you early. This helps stop spills and keeps people safe.

Note: Double-wall tanks help you follow EPA and OSHA rules. They stop leaks and protect the environment.

Safety and Compliance

It is very important to be safe when storing fuel. UL-listed tanks meet strict rules for fire and leaks. These tanks have strong seams and tight fittings. They also have special vents for safety. You need normal and emergency vents to control pressure. Tanks must have places for filling, draining, and checking for leaks. Labels show the tank meets UL 142 rules. You should use dikes or berms to stop spills from spreading. Check tanks often and use leak alarms to find problems early. Always hire trained people to install tanks. Follow all local and national rules.

• UL-listed tanks: Meet fire and leak safety rules.

• Double-wall tanks: Built-in leak alarms, easier to follow rules.

• Regular checks: Find leaks, stop harm to the environment.

• Dikes and berms: Stop spills, keep the area safe.

Callout: Good safety steps keep people, nature, and your generator safe.

Pros and Cons of Generator Fuel Tank Types

Sub Base Tanks

Sub-base tanks are placed right under the generator. This saves space because you do not need extra room. The fuel lines are short, so leaks and fires are less likely. It is easy to check and take care of these tanks. They are close to the generator, so you can see problems fast. Sub-base tanks usually cost less to put in than underground tanks. They are best for holding less than 1,000 gallons of fuel.

Note: Sub-base tanks are safe and simple to care for, but you may have to refill them a lot.

Above Ground Tanks

Above ground tanks are easy to get to and quick to set up. You can see leaks fast and fix them before they get worse. These tanks cost less to install than underground tanks. You do not need to dig or use big machines. There are strict rules about where you can put them. They need dikes to catch spills and must be far from buildings.

• You should check above ground tanks every month.

• You need to repaint them every few years.

• They have higher risks from fire and weather.

Tip: Above ground tanks are easy to use, but you must keep them safe from weather and fire.

Underground Tanks

Underground tanks are buried below the ground. This saves space above and keeps fuel safe from weather and people who might damage it. These tanks can hold a lot of fuel, so your generator can run longer. They have two walls and special covers to stop leaks. Underground tanks cost more to put in and take out. You must check them often for leaks and rust.

• You need to check underground tanks for leaks often.

• Rust and water inside can cause fuel trouble.

• Cleaning up leaks underground can be very expensive.

Alert: Underground tanks are good for big needs, but they cost more and have strict rules.

Choosing a Generator Fuel Tank

Key Factors

When you pick a generator fuel tank, think about a few things. First, decide which tank type you want. You can choose above-ground, sub-base, or underground tanks. Each tank works best in different places and for different budgets. Next, check how much fuel the tank can hold. Make sure it matches your generator's fuel use and how long you want it to run. Bigger tanks need more space and cost more, but you refill them less.

Think about how tall the tank is. If it is tall, you may need a ladder or platform to reach it safely. Look at the fuel type you will use. Diesel comes in many grades. Pick the right one for your weather so it does not get thick. Always use tanks made for flammable and combustible liquids.

Here is a simple checklist to help you choose:

1. Pick the tank type (above-ground, sub-base, or underground)

2. Check how much fuel it holds and how long it runs

3. Think about the tank's height and how you will reach it

4. Choose the right fuel type and how long you will store it

5. Make sure you have enough space to put the tank

6. Use equipment to stop spills and overfilling

Regulations and Safety

You must follow all rules when you put in a generator fuel tank. Local laws say where you can put tanks and how much fuel you can keep. They also tell you what safety steps you need. Zoning laws set how far tanks must be from buildings and property lines. Fire codes say you need extra walls and vents for safety. You need permits from the fire department and environmental groups.

Tanks for flammable and combustible fuels must meet rules like NFPA 110 and UL 142. You need fire-safe rooms, good airflow, and clear labels. Noise rules may change where you put your generator. Always use equipment to stop spills and overfilling to keep people and nature safe.

Callout: Professional installers know the newest rules. They help you avoid mistakes and keep your site safe.

Maintenance Tips

Doing regular checks keeps your generator fuel tank safe and working well. Look at your tank every week for leaks or rust. Check the fuel level and see if there is water or dirt inside. Every few months, test the tank and pipes for leaks. Take a fuel sample to check if it is still good. Once a year, clean the tank and test the leak alarms.

Follow these easy steps:

• Look for leaks, rust, or damage

• Add fuel stabilizers to keep fuel fresh

• Test fuel to make sure it is not dirty

• Keep tanks clean and dry inside

• Only store flammable and combustible liquids in approved tanks

Note: Good care and prevention help your generator work when you need it most.

Conclusion

Picking the right generator fuel tank helps keep you safe and following rules. You should choose a tank that fits your needs and where you will use it. The right tank can stop leaks and save fuel. It also helps you avoid losing time and money.

• The tank's material makes it strong and safe.

• The right size lets your generator run longer.

• Double walls and tight caps help stop spills.

• Gauging systems let you check fuel so you do not run out.

LIYU Group has many generator products you can trust. You can contact them to learn more or get help for your project.

FAQ

What is the safest type of generator fuel tank?

Double-wall tanks give you the best safety. They have two layers. If the inside leaks, the outside keeps fuel in. You also get alarms for leaks. This helps you stop spills fast.

How often should you inspect your generator fuel tank?

• Check your tank every week for leaks or rust.

• Test alarms and sensors once a year.

• Clean the tank yearly.

• Take a fuel sample every few months.

Can you use a plastic tank for diesel fuel storage?

You can use plastic (polyethylene) tanks for diesel. They do not rust.

What happens if water gets into your fuel tank?

Water in your tank can cause rust and damage your generator. You should drain water right away. Use fuel additives to keep water out. Always check for water during inspections.