Above ground storage tank cleaning removes deposits from tanks remaining in use or being prepared for inspection, product change or other work. An accessible exterior does not necessarily mean the internal surfaces are easy to reach.
Above Ground Storage Tank Cleaning
Above ground storage tank cleaning removes deposits from tanks that remain in use or need preparation for inspection.
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Tank position and access
The surrounding working area and access openings influence equipment placement and cleaning coverage.
Residue removal
Remaining liquid and deposits need suitable recovery arrangements before the internal cleaning work.
Access and equipment position
Roof openings, side manways, tank height and internal fittings affect the cleaning method. Work around upper fittings can also require separate controls for safe access at height.
The surrounding bund, supports and pipework can restrict equipment position and the route used to transfer recovered material. Product identity and contamination determine how liquids, sludge and washings are handled while maintaining containment.
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Containment and required finish
Bund cleaning is a separate work area from cleaning the tank interior and is included only where agreed. Material in the containment area may have a different condition or handling requirement from material recovered inside the vessel.
The finish depends on the tank’s next use. Cleaning for routine storage, inspection or a change of contents can require different attention to bottom deposits and surfaces around fittings.
Cleaning for inspection or continued use
Cleaning may expose corrosion, coating damage or other visible defects, but it does not establish tank integrity. Inspection, repair or coating work remains separate where those findings require it.
Above Ground Storage Tank Cleaning: common questions
Does an above-ground tank always allow non-entry cleaning?
No. The openings, internal obstructions and cleaning objective determine whether a suitable method can work from outside.
Is the bund included in the tank clean?
Only where bund cleaning is specifically included. The tank interior and surrounding containment are different work areas with different material to assess.
Can cleaning prepare the tank for a lining inspection?
Yes, where the required surface condition is agreed with the inspector. Inspection and any lining repairs remain separate activities.
Can cleaning expose corrosion or coating damage?
Yes. Removing deposits may reveal visible defects, but their significance and any repair or integrity decision require a separate assessment.
What access controls may be needed around upper tank fittings?
Roof openings and upper fittings can require suitable work-at-height access and controls in addition to the cleaning method used inside the tank.