Page 645 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

Chapter 10 Domestic fuel systems

or building an oil-impermeable containment wall around the tank installation.
These are generally required where the tank is close to a river or water source.
The bund must be capable of holding 110 per cent of the oil tank’s contents.
Usually, a standard risk assessment is required by a registered oil installer to
ascertain whether a bunded installation is required.

Over-fill preventation
Contents dial device Anti–siphon value
Vent

Oil tank sloping Gate value
towards drain point

Non–return value
Fill point
Drain/sludge
point Secondary
containment (bund)
rendered with oil-
resistant sealant

p Figure 10.10 An oil tank with an oil-proof bund wall

Contents gauge
Tank and bund overfill
alarm probes Fill point Anti–siphon value
Vent

Bund or secondary
containment

Internal tank
p Figure 10.11 Secondary containment tank

The location of fuel oil tanks

The siting of oil tanks must comply with fire separation distances, to protect
the fuel oil from a fire or heat source that may occur within the building itself. It
is very unlikely that any fire would occur within the tank itself. The regulations
state that fuel oil tanks should be sited:
l 1.8 m from non-fire rated eaves of a building
l 1.8 m from a non-fire rated building or structure such as a garden shed

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