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Petrochemical Tank and Bund Lining

Butyl Products Ltd. offer design, supply and installation services for petrochemical tank and bund lining. We will be pleased to quote for your project.

Geomembranes are used for primary containment as tank linings or for secondary containment as bund lining.

Secondary containment is achieved in most chemical/oil tank situations by building the tank inside a reservoir - in this case called a 'bund' - which has sufficient capacity to contain the contents of the tank should it leak or fail.

Bund lining materials must have a chemical resistance suitable for primary containment of the stored product plus the strength and other required resistances for long term exposure to the atmosphere where the bund is located (as the bunds stand empty all their life). For this reason, reinforced materials are often used for bund lining. Chemical resistances must include rainwater and other localised contamination (for example on an aerodrome there is often aviation fuel contamination from aircraft engine exhaust).

Bund lining is normally carried out in two stages:-

Stage 1: A lining is placed below the tank base that extends approx. 2.00m beyond the tank. The tank is then built, filled and left so any settlement can occur.
Stage 2: The (reservoir) bund is then lined and the base lining welded to the previously installed section of base lining, which is under the tank.

Under tank membrane installed, awaiting second phase

Leakage monitoring is often carried out by installing through liner suction or drainage pipes. These are sealed to the liner by using standard pipe sleeves or by flange assemblies where the liner acts as a gasket.

Butyl Products Ltd. have over 20 years experience of bund lining and have carried out many retro-fitted below tank linings when a liner is fitted below a tank after it has been jacked up.

Chemical works spills bund in progress

Tank farm with lined tanks and lined bund. Sullom Voe Crude Storage Terminal, Shetlands, UK

Sullom Voe Crude Storage Terminal, Shetlands, UK
Under construction