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Frequently Asked Questions

Question: Do I need a Fire Protected Tank?

If you answer YES to any of the below, then Fire Protection must be provided:

1. Is the oil tank located within 1.8 metres of a non-fire rated building or structure (less than 30 minutes)?

2. Is the oil tank located within 760mm of a non-fire rated boundary (less than 30 minutes)?

3. Is the oil tank located within 1.8 metres of a non-fire rated eaves (less than 30 minutes)?

4. Is the oil tank located within 1.8 metres of a construction opening in building (non-fire rated window/door less than 30 minutes)

5. Is the oil tank located within close proximity to a balanced flue?

6. Is the oil tank located on a base which does not extend a minimum of 300mm around all sides of the tank?

Question: Are Tuffa Oftec Registered?


Tuffa UK's tanks have been tested to Standard:prEN13341:2008 and in addition to this tested under the Oftec Fuel Storage Tank Test scheme and conforms to the Requirements for Tanks as set out in OFTEC OFS T 100: Issue 6 July 2008.

Tuffa's Fire Protected Tank Range:

- Independently tested to BS476: Part 22: 1987
- Independently tested to BS476 (Warrington Fire Research Centre)
- Meets Section J 5.4 of Building Regulations, Table 5.1 for Fire Protection for Oil Storage Tanks
- LABC (Local Authority Building Control) system approval

Question: How can I maintain my Oil Storage Tank?


If you want some helpful tips and advice regarding the maintenance of your Oil Storage Tank / Tanks, then refer to Tuffa's Tank Inspection and Maintenance Guidelines for the best advice.

Question: What liquids can be stored in a Tuffa Tank?


The range of Tuffa Tanks cover storage for many liquids including: Oils, Petrol, Rain Water, Potable Water, Biodiesel, AdBlue or Urea, various Chemicals including Antifreeze and De-icer, Molasses, Waste Oils, Diesels, Lubricants and more.

Question: Do Tuffa offer a delivery service?

Yes. Tuffa use a variety of outsourced haulage companies in order to bring you the competitive prices you see. Tuffa are able to offer a nationwide service, as well as deliveries overseas.
If off-loading is required, Tuffa are able to offer a hiab off-load facility or crane off-load to save you the hassle.

Question: What is the lead time / availability of a Tuffa Tank?


This is dependent upon the model of the Tuffa Tank. However, we always endeavour to work to and meet your specific requirements. Typically, the lead time of a plastic Tuffa Tank is 5-7 days.

Question: What is Fuel Monitoring?

Fuel monitoring is where the level of the fuel is being obtained either by:
a.) Sight: This can be a sight tube that runs to the top of the tank (small tanks normally), or cat and mouse gauges.
b.) Mechanically Pneumatic: Pneumatic reading gauges (hydrostatic), where fuel is displaced from a tube and the resultant back pressure formed by the head of oil gives a reading on a gauge.
c.) Electronically: This can be various systems, as above, giving either analogue or digital readings

Question: What is Fuel Management?

Fuel management is where the above, plus some form of registering what fuel is taken from the storage vessel, normally through a flow meter. Where a record is taken and noted of the fuel used; there are many systems that electronically store this information and can be viewed on a computer system or a web application.

Query: How far away does the Tank have to be from a boundary?


1.8m from an opening, and 0.76m from a boundary. However, these regulations do not apply to a Tuffa Fire Protected Tank. 

Query: What guarantee do I get with my Tuffa Tank?


Please contact the Tuffa Sales Team to find out more about the guarantee periods available with a Tuffa Tank.

Query: What are the benefits of a Plastic Tuffa Tank?


- Competitively Priced

- Lightweight and durable

- Easily Transportable

- The Bunded construction offers protection from leakage and overfilling

- Covered Bund prevents the collection of rainwater and debris

- Fully lockable tanks

- Corrosion resistant

- UV stabilised

- Quick dispatch

- Can be interlinked to obtain larger capacities

- Various colours available

- Made from virgin material, which is recyclable.

- Can be factory fitted with our bespoke Fire Protection

Query: What are the benefits of a Steel Tuffa Tank?


- Can be manufactured to any dimensions to suit all customer requirements

- All tanks manufactured from only high quality steel

- Design versatility to suit almost every site requirement

- Minimum 110% bund capacity to comply with regulations

- Only premium ancillary equipment is fitted

- Serviceable life in excess of 30 years (with regular maintenance)

- Various colours available

- Available in a variety of steel finishes

- Can be factory fitted with our bespoke Fire Protection

Question: What can I do to secure my tank?


A few simple steps to help deter fuel thieves:

- Screen your tank with fencing or hedges

- Ensure gates or access to the tank are closed and fully secure at all times

- Conceal/cover any external pipes and fuel lines

- Install PIR security lights to the tank. CCTV is also a good deterrent

- Install lockable fill caps with padlock

- Consider installing a tank alarm

- Join a Neighbourhood Watch scheme

- Regularly check the level of fuel within the tank.

Question: Is a single skin or a Bunded Tank required?

In all cases a risk assessment should be carried out by a suitable qualified engineer.

If the following apply then a bunded oil tank is to be installed:

  • Tank capacity in excess of 2500 litres
  • Tank within 10m of controlled water
  • Tank located where a spillage could run into an open drain or to a loose fitting manhole cover
  • Tank within 50m of a borehole or spring
  • Tank over hard ground or hard-surfaced ground that could enable spillage run-off to reach controlled water
  • Tank located in a position where the vent pipe outlet is not visible from the fill point
  • Tank supplying heating oil to building other than a single-family dwelling

Question: What is a Bunded Oil Tank?

A bunded oil tank is a double walled tank or a tank within a tank. The inner tank stores the oil and the outer tank acts as a bund which encases the inner tank. The outer tank holds 110% of the capacity of the inner tank. If there is a spill or leak from the inner tank it’s captured in the outer tank so avoiding groundwater pollution.

Question: What is an Integrally Bunded Oil Tank?

An integrally bunded tank is an outer tank which is normally attached to the inner tank to rely on the inner tanks build characteristics for additional design support and strength.

Question: What is a Double Skinned Tank?
A double skinned tank is a type of tank manufactured by some companies. This is where the outer tank is laid directly on the inner tank (two skins). To obtain structural strength on the outer tank a method is to support it externally or to drill holes in the outer plate and fillet weld the inner to the outer plate filling the hole in again. Some tanks manufactured like this have no secondary containment of 110%, unless additional space has been added to the outer skin to allow for this.



Question: What type of base is required for the Tank?


The tank must be completely supported on a non-combustible base and the base must extend 300mm around the footprint of the tank.

Question: How often should the Filter be changed?


The filter requires changing every 6 months, or if the flow rate reduces.

Query: Reasons for the Pump NOT running.

Answer: Thermal overload may have tripped, this can be reset, it is located on the pump control box (fig 1). Push the button once, and then try the pump again

Fig 1 - Pump not running Fig 1

Answer: Check the electrical connections are tight. 

Query: Pump is running, but still can NOT dispense fuel - Why?


Potential air lock from first fill and subsequent fills, or the pump has been run dry.
Resolution: Whilst the pump is running, slightly undo the filter to release any air or slightly undo the connection at the nozzle

Query: Pump runs, but there is a reduced flow rate. Why?


A blockage or restriction in the system may have caused a reduction in the flow rate.
Resolution: Inspect the filter element for a blockage, and replace if necessary.

Query: Flowmeter out of calibration. How can this be rectified?

Diesel Flowmeter


  1. Wait for the flowmeter to be on standby (no figures displayed) then press the reset button to reset the total.
  2. Dispense a quantity of liquid into a pre measured container, and note the exact measurement in the container.
  3. If the flowmeter is out of calibration it should have a different total to that dispensed in to the container.
  4. Hold the menu button until the figure on the left begins to flash.
  5. Press the reset button to alter the flashing figure between 0 -9.
  6. Press the menu button to move the flashing pointer along one.
  7. Repeat this process until the figure on the screen reads the same as what was recorded by the measuring device.
  8. When correct, hold the menu button.
  9. The flowmeter is now re-calibrated.

Query: Watchman gauge reading incorrectly or showing no reading. How can this be rectified?


  1. If the Watchman gauge reads incorrect compared to the amount of liquid in the tank it must be recalibrated. To do this, take the Watchman from the tank to the plug-in receiver (must be plugged in) and re-pair the devices. This is done by holding the white dot on the Watchman to the black dot on the receiver for 20 seconds. This pairs the device again and should now work as previous. If still reading incorrectly please refer to office for further assistance.
    Ref to Fig. 2. below.
    Watchman Sonic
  2. If the Watchman gauge has no reading, the batteries in the sonic reading device need replacing.