NO752615L
An oil storage tank above ground level rests on porous layers surrounded by an airtight vertical partition wall. A vacuum pump and a vacuum container outside are connected by a pipe to the centre of the concave tank bottom so that a vacuum can be created under it to extract air, ground water and any...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | An oil storage tank above ground level rests on porous layers surrounded by an airtight vertical partition wall. A vacuum pump and a vacuum container outside are connected by a pipe to the centre of the concave tank bottom so that a vacuum can be created under it to extract air, ground water and any leakage oil. This is a simple and reliable method of eliminating any contamination of ground water supplies. |
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