OFTEC Oil Storage Tank Regulations 3

Question 1

What is the purpose of a tank contents gauge on a domestic oil storage tank?

Accepted Answer

To indicate the oil level so the homeowner knows when to reorder fuel

Answer

A contents gauge shows the approximate level of oil remaining in the tank. This allows the homeowner to monitor usage and reorder fuel before the tank runs dry, which can cause air locks and burner lockouts.

Question 2

Where should the tank fill point be positioned for safe delivery access?

Accepted Answer

Within 30 metres of where the delivery tanker can park, with safe access

Answer

The fill point should be within 30 metres of the delivery vehicle parking position (the maximum standard hose length). The fill point should be clearly visible and accessible, with a hardstanding area for the delivery driver.

Question 3

What type of material is commonly used for domestic oil supply pipework between the tank and the building?

Accepted Answer

10mm copper pipe or steel pipe, buried underground in a protective duct

Answer

Oil supply lines are typically 10mm OD copper or steel, buried at a minimum depth of 300mm in a protective duct when underground. This protects against physical damage, frost, and allows for leak detection and pipe replacement.

Question 4

What is the minimum depth for burying an oil supply pipe underground?

Accepted Answer

300mm (or 450mm under driveways)

Answer

Underground oil supply pipes must be buried at a minimum depth of 300mm to protect them from frost and accidental damage. Under areas subject to vehicle traffic (driveways), a depth of 450mm is recommended.

Question 5

What must be done if an oil tank is to be sited within a zone that could potentially flood?

Accepted Answer

The tank must be securely anchored and all openings above the flood level

Answer

In flood-risk areas, the tank must be securely anchored to prevent flotation and displacement. All openings (fill, vent, offtake) should be above the predicted flood level. Secondary containment must also be flood-resistant.

OFTEC Practice Test

OFTEC Practice Test

OFTEC Oil Storage Tank Regulations 3