AST Bottom Plate
Corrosion Protection Solutions

Soil-side corrosion is one of the most common causes of above-ground storage tank failures worldwide. It occurs due to moisture, environmental exposure, and operational stresses that create air gaps between tank bottom plates and foundation pads. This leads to corrosion development, particularly in hidden and hard-to-access areas.

Challenges with Conventional Corrosion Protection Methods

Traditional protection techniques such as asphalt pads, bituminous sand, coatings, and cathodic protection systems have been widely used. However, these methods often fail to provide adequate protection against pitting corrosion due to limited current flow in areas affected by air gaps, weld overlaps, and operational stress cycles.