Frequently Asked Questions - Tanks

Do I need a sight gauge?

All tanks must be fitted with a fully functioning level gauge, and high level alarms where appropriate. The gauge allows a delivery driver to check whether the tank has sufficient room for the delivery ordered, and allows him to monitor the delivery whilst it is being made.

Why do I keep on running out when my sight gauge says I have got oil?

You should check your tank and sight gauge regularly to ensure that you have oil. We would recommend at least once a week in Winter. Sight gauges usually have a valve which, when opened, allows the level in the sight gauge to reflect the level of oil in the tank. The valve should always be left in the off position, see below. If the gauge has not been checked (valve opened) then the tube may have oil in it but the tank may have run out.

Should my sight gauge be left open or closed?

The Environment Agency advise that a sight gauge must be left closed/off. Although this means that the reading on the gauge does not reflect the level of oil in the tank until it is opened, it also means that if the sight gauge is detached the oil is still trapped in the tank. Thus you will prevent the contents of your tank discharging on to your garden.

What is a Bunded tank?

A bunded tank is a tank that is contained within a surround that is capable of holding 110% of the storage capacity of the tank. A bund is usually constructed of masonry, steel, or strong plastic, and coupled with an impervious bottom prevents any oil spilt from the tank from polluting the surrounding area.

Do I need a bunded tank?

If you are a commercial oil user, or the fuel is stored on a commercial site, then it must be stored in a bunded tank. If you are a domestic oil user, you will not normally be required to bund your tank if it has a capacity of less than 2500 litres. However all oil users - including domestic users - will need to have a bunded tank should one or more of the following risks apply to their particular tank location:
If the tank is within 10 metres of controlled waters.
If a spillage could run into an open drain or loose fitting manhole cover.
If the tank is close to a borehole or spring.
If any spillage, however caused, could run over hard, or hard surfaced, ground in such a way that it could reach controlled waters.
If the tank is located in a position where the vent pipe outlet is not visible from the fill point.
If any other hazard exists that is particular to the site.
How much oil is in my tank, and how much I need to order?

The sight tube is your gauge to how much fuel is in your tank. Make sure you turn the tube/gauge "on" when you take a reading and that you have allowed time for the fuel to settle in the gauge. If you are in any doubt of the reading, then a garden cane or similar can be dipped in the tank to act as a dip-stick, so giving a physical indication of the tanks level.