Above Ground Oil Storage Tanks (PPG2)

Appendix A Checklist for oil storage tanks

Completing this checklist will help you decide if you need to improve your oil storage facilities to comply with the Oil Storage Regulations (OSR) England and Scotland. If you’re not sure of the answer, don’t guess – get professional help and advice.

If your tank is exempt from the OSR, we recommend you follow these guidelines as fully as possible to reduce the risk of your oil causing pollution. There are other requirements for the Building Regulations that your tank may need to comply with. Check with your local authority for details.

For each time your answer is an x refer to the guidance or contact your registered tank manufacturer, registered, competent technician, delivery company or us to find how to correct this point.

General requirements

or

Comments
Is the tank ‘fit for purpose’ and in good condition (unlikely to leak or burst in ordinary use)? g e.g. polyethylene isn’t deformed or cracked, e.g. metal isn’t rusty
Is the tank situated more than 10m from a watercourse or 50m from a well or borehole? If unsure, contact us. g g
Is the tank within a secondary containment system? g g
Is the tank/containment system located or protected so an impact or collision can’t damage it? g g
Secondary containment: storage capacity

or

Comments
For a single tank, is the secondary containment at least 110% of the maximum storage capacity of the tank? g See calculation table, page 18
For two or more tanks in one secondary containment system, is the secondary containment at least 110% of the biggest tank’s maximum storage capacity, or 25% of the total maximum storage capacity of all the tanks, whichever is the greatest? g g
Secondary containment: integrity

or

Comments
Is the secondary containment impermeable to water and oil? g For masonry, concrete and steel containment
Is the secondary containment system intact and without openings or valves for drainage? g Get any cracks or other damage repaired.
Are any draw-off pipes/feed lines and fill pipes that pass through the secondary containment sealed adequately? g g
Tank ancillary equipment

or

Comments
Are all valves, sight gauges, vent pipes and taps within the secondary containment system? g g
If the tank has a sight gauge, is it properly supported and fitted with a British Standard valve that closes automatically when the gauge isn’t in use? g g
Are fill and draw-off pipes/feed lines located or protected from impact or collision damage? g g
And, if applicable, are they protected from corrosion and frost damage? g g
And, if above ground, are they supported properly? g g
Are vent pipes, taps and valves arranged so that any oil lost will be retained within the containment system? g g
Are all taps and valves fixed to the storage tank, through which oil can be discharged to the open, fitted with locks and locked shut when not in use? g g
Deliveries to the tank (filling)

or

Comments
Is the fill pipe situated within the secondary containment system or, if not, is a drip tray big enough to contain any oil that remains in the pipework after filling available? g Empty the drip tray after the tank is filled.
Can the tank and vent be seen from the point where the filling operation is controlled or, if not, is the tank fitted with an automatic overfill prevention device? g g
If the tank has a screw fitting or other fixed coupling, is it in good condition? g g
Are fittings/couplings being used when the tank is filled? g You need to discuss this with your oil supplier.
Underground pipes (for filling and/or draw off)

or

Comments
Are underground pipes for filling, draw-off or feed protected from physical damage? g g
Are all mechanical joints situated at a place accessible for inspection? g For example, under a hatch or cover.
Are there adequate facilities for detecting leaks? g g
If permanent leak detection is provided, is it maintained in working order and tested at appropriate intervals? g g
If permanent leak detection isn’t provided, have the pipes been tested before use? g g
Is pipework with mechanical joints tested for leaks every five years? g g
Is all other pipework tested for leaks every ten years? g g
Flexible draw-off pipes (for draw off)

or

Comments
Is the flexible draw-off pipe fitted with a tap, valve or nozzle at the delivery end that closes automatically when not in use? g If the tap or valve can be fixed in the open position, it should have an automatic shut-off device.
Is the pipe kept within the secondary containment system when not in use or enclosed in a secure cabinet equipped with a drip tray? g g
Is there a lockable valve where the pipe leaves the container which is locked shut when not in use? g g
Pumped draw-off (non-gravity draw-off)

or

Comments
Is the pump fitted with a check valve in the feed line to the pump? g g
Is the pump protected from unauthorised use and locked or isolated when not in use? g g
Is the pump located or protected from impact or collision damage? g g

If you can’t answer a question or have crosses in the second column, it’s likely that your oil storage installation needs to be upgraded to comply with the OSR unless it is exempt. The OSR England are fully in force and you must upgrade your oil storage now. To avoid the risk of pollution, take action to upgrade your oil storage as soon as possible.

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