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Extreme weather conditions

Insulated tanks

Outdoor tanks are often exposed to extreme temperature fluctuations and weather conditions In Siberia, temperatures can fall as low as -40°, and in the Congo rise to as much as +40°. To make sure the tank's contents are not affected, the insulation is an important constituent of tank manufacture.

Thermal insulation

For purpose of insulation, rock wool or mineral wool is used, since it is resistant to high temperatures. The insulation materials have to be free of chlorite, so as not to attack the stainless steel.

After being fitted, the insulation is encased in trapezoidal or smooth aluminium sheeting. It can, however, also be welded in a gastight configuration with a stainless steel jacket.

Cold insulation

1. PU foam:
An ultra-high-quality polyurethane foam is fitted to the tank. This requires approx. 45 to 50 kg of foamed PU per m3, and demands considerable expertise and at GROSS is performed only by experienced specialists. Otherwise the insulating material may be unevenly distributed, which will, of course, also entail irregular insulation. For this reason, the AGI standard lays down that foamed materials may be fitted only at a particular temperature , so as to avoid irregularities.

2. Armaflex:
These insulating sheets made of flexible foamed plastic are stuck to the tanks, after which a trapezoidal or smooth-sheet casing is fitted over it.

3. Vermiculite (expanded mica):
Vermiculite is an inorganic, natural insulating material, and is used in loose form. Thanks to its relatively high own weight and its relatively low thermal conductivity, Vermiculite is well suited for use as filling .







Well worth seeing

For all processes mentioned, the following applies: insulations are encased in optically appealing trapezoidal or smooth sheeting only in places where they are visible !