Tank Solutions – Fuel
Replacing an underground fuel tank at a service station
What’s involved, who does it, what drives the cost and how leaks are monitored.
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Tank Solutions – Fuel
Service station fuel tanks
Double-wall FRP underground fuel tanks for new service stations, upgrades and replacements, with full 360-degree secondary containment and interstitial leak monitoring. Glasteel® II steel tanks with an FRP outer wall are the steel option.
Get a price
Tell us roughly what you need. A sales engineer for your state replies within 2 business days.
Have drawings or a full spec? Use the detailed quote form, or call NSW +61 2 4964 8270 or WA +61 8 9434 1707.
Overview
Full 360-degree secondary containment allows continuous monitoring of both the inner and outer walls, so a leak in the primary wall is contained before it reaches groundwater.
Tanks are corrosion-resistant and maintenance-free, and can be split into up to four compartments so several fuel grades share one tank and one excavation. Each is made to meet or exceed UL 1316, carries a 30-year warranty against structural failure and internal and external corrosion, and is installed by an accredited installer.
Where a steel structural tank is preferred, Glasteel® II pairs a welded steel tank with an FRP outer wall that fully encloses it.
Typical applications
- Service station upgrades and tank replacements
- New-build forecourts
- Truck stops and fleet refuelling sites
- AdBlue storage tanks beside the diesel, as a compartment or a separate tank
Construction
Wall typeDouble-wall FRP, 360-degree secondary containment
Capacity2,000–150,000L
ReinforcementIntegral rib design
LaminateVirgin resins and glass, no fillers; Parabeam fibreglass technology
Rated pressureUp to 35kPa
Compartments1–4, with integral double internal walls
Leak monitoringTruchek® hydrostatic monitoring of the interstitial space
Warranty30-year structural and corrosion warranty
Standards
- UL 1316Glass-fibre-reinforced plastic underground storage tanks for petroleum products. Our double-wall FRP tanks are made to meet or exceed it
- AS 4897The design, installation and operation of underground petroleum storage systems, with a third-party tank test after installation
- AS 1940Tank venting to Section 5.4. See our AS 1940 guide
- AS 1692 and UL 58Steel tanks, for Glasteel® II. See what AS 1692 covers
- ISO 9001Certified quality management system at both manufacturing sites
- InstallationBy an accredited installer. See the installer directory
Manufactured at our Tomago NSW and Kwinana Beach WA sites, both certified to ISO 9001.
Compatible media
- Diesel
- Unleaded petrol
- Alcohols
- Alcohol-gasoline mixtures
Need a different size or fit-out?
We build to your spec. Send us the application, capacity and site, and a sales engineer covering your state will reply within 2 business days.
Send us your specCapacities and compartments
Service station tanks run from 2,000L to 150,000L, with 1 to 4 completely separate compartments depending on size, so several grades share one tank and one excavation. Size the tanks and compartments for your sales.
| Tank | Capacity | Compartments | Leak monitoring |
|---|---|---|---|
| Double-wall FRP | 2,000–150,000L | 1–4, depending on size | Truchek® hydrostatic |
| Glasteel® II | 2,000–200,000L | 1–4, depending on size | Factory-fitted interstitial vacuum gauge |
| Compartments | Example layout |
|---|---|
| Single | One grade, such as diesel |
| Dual | Two grades, such as unleaded and diesel |
| Triple | Three grades, such as unleaded, premium and diesel |
| Quad | Four grades, such as unleaded, premium, diesel and AdBlue |
Compartment sizes are set to your site. The standard double-wall FRP models, with lengths and weights, are on the double-wall FRP page.
How leaks are monitored
Our service station tanks are double-wall. The outer wall fully surrounds the inner wall, and the interstitial space between them is monitored, so a leak in either wall shows up before fuel reaches soil or groundwater.
360-degree secondary containment
If the primary wall ever leaks, the outer wall holds the fuel in the interstitial space instead of letting it reach groundwater.
Hydrostatic monitoring on FRP
On double-wall FRP tanks, Truchek® keeps the interstitial space filled with brine, and a reservoir on top of the tank holds it at a set level. It gives continuous leak detection, lets the owner do a visual tank tightness test and meets EPA requirements.
Vacuum monitoring on Glasteel® II
Glasteel® II tanks leave the factory with the interstitial space under vacuum and a vacuum gauge fitted. A break in the inner or outer wall causes a loss of vacuum, which shows on the gauge.
Tested after installation
Double-wall FRP tanks get a third-party tank test after installation to AS 4897, using USEPA methods, before the site is commissioned.
General information only, not compliance advice. Your state EPA sets the leak detection and monitoring rules for each site.
Fibreglass or Glasteel® II?
Both are double-wall with a monitored interstitial space. Double-wall FRP is fibreglass inside and out. Glasteel® II gives you the strength of a welded steel tank, fully enclosed in an FRP outer wall, so the steel never touches soil or groundwater and needs no cathodic protection.
| Feature | Double-wall FRP | Glasteel® II |
|---|---|---|
| Inner wall | FRP with integral ribs and Parabeam 3D fibreglass | Welded mild steel |
| Outer wall | FRP, full 360-degree containment | FRP, fully enclosing the steel tank |
| Leak monitoring | Truchek® hydrostatic | Factory-fitted interstitial vacuum gauge |
| Corrosion | Rust-proof inside and out | Steel kept out of soil and groundwater; no cathodic protection |
| Capacity | 2,000–150,000L | 2,000–200,000L |
| Standards | UL 1316 | UL 58, AS 1692 |
| Warranty | 30 years, structural and corrosion | 30 years, structural and corrosion |
| Risers | 1,200 mm collars standard on pressure systems | 1,200 mm with 600NB manway, or 1,500 mm for large turbines |
See double-wall FRP tanks and Glasteel® II tanks for the full specifications and warranty terms.
Replacing a service station tank
Older tanks need replacing once they reach the end of their service life. A double-wall replacement adds secondary containment and interstitial leak monitoring.
What’s involved
- A site assessment, and the grades, capacities and compartments the site needs
- Notifying your state EPA or regulator, and any approvals your state requires
- Taking the old tank out of service and removing it, by a licensed contractor
- Installing the new tank to AS 4897 and our installation and backfill manuals
- Testing after installation, then commissioning
- Ongoing monitoring of the interstitial space
Who does it
We manufacture the tank to your spec. An accredited installer from our installer directory installs and tests it; a non-accredited installation voids the warranty. Read our guide to replacing a service station tank.
What drives the cost
- Capacity
- Number of compartments
- Single or double wall
- Excavation and burial depth
- Ground conditions, including wet holes and unstable ground
- Removal of the old tank
- Leak monitoring, risers and fittings
Every site is different, so we price each tank to your spec. Send us your spec and a sales engineer covering your state will reply within 2 business days.
Photos
Where it’s been used
Service station tanks for underground fuel storage
Double-wall FRP tanks with 360-degree secondary containment for service station upgrades and replacements.
T145 Glasteel® fuel tank
A large-capacity underground Glasteel® tank in single to quad compartment designs, for regional service stations storing several fuels.
Common questions
Can’t see yours? Call NSW +61 2 4964 8270 or WA +61 8 9434 1707.
Full 360-degree secondary containment lets both walls be monitored continuously, so a leak in the primary wall is contained before it reaches groundwater.
Yes. Tanks can be split into multiple compartments, so several grades share one tank and one excavation.
Petroleum fuels including diesel and unleaded petrol, alcohols and alcohol–gasoline mixtures.
An accredited installer. Find one in the installer directory.
We manufacture the new tank. A licensed contractor takes the old tank out of service and removes it, following your state EPA’s guidance, and an accredited installer from our installer directory installs and tests the new tank to AS 4897 and our installation manuals. A non-accredited installation voids the warranty.
It depends on the capacity, the number of compartments, single or double wall, the excavation and ground conditions, removal of the old tank, and the leak monitoring and fittings. Send us your spec and we’ll price the tank, with no obligation. We reply within 2 business days.
AS 4897 covers the design, installation and operation of underground petroleum storage systems, including secondary containment. Our double-wall tanks are monitored through the interstitial space between the walls, with Truchek® hydrostatic monitoring on FRP tanks and a factory-fitted vacuum gauge on Glasteel® II. Your state EPA sets the rules for each site. This is general information, not legal advice.
Yes. An underground AdBlue storage tank can be a stand-alone FRP tank or one compartment of a multi-compartment tank beside diesel and unleaded, so one excavation serves both. FRP doesn’t corrode in AdBlue, and below ground the AdBlue stays clear of summer heat and frost.
Request a quote
A few details up front means your quote comes back faster, from the right engineer for your state. We price each tank to your spec, with no obligation, and reply within 2 business days.
Thanks there, your enquiry is in.
Your enquiry has gone to our sales team. A sales engineer will be in touch within 2 business days.
Need it sooner? Call NSW +61 2 4964 8270 or WA +61 8 9434 1707.
Please email your drawings and documents to sales@tanksolutions.com.au with your name in the subject line, so we can add them to this enquiry.
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