The metal bottom of a tank can produce an unnecessary inspection and maintenance effort in comparison to its initial cost.
This reflects the difficulty in detecting corrosion of
the tank floor, especially on the underside, and the fact that a perforated floor This in turn can give rise to an insidious loss of product and damage to the environment with the inevitability of a reduction in profits.
Whilst it is unusual for a
failed floor to lead directly to catastrophic failure of a storage tank, it is not impossible for
it to do so. A more common failure mechanism is leakage through the floor damaging
the tank foundations, which could lead to instability and eventual catastrophic failure.
Nevertheless the integrity of the original tank bottom
remains the prime means of preventing product loss and associated damage to the
environment, and thus it needs to be maintained in a sound condition.
Recent developments in the methods available to inspect tank floors make remaining life
predictions easier. The Floormap3Di is the most advanced MFL floor scanner on the market today. Silverwing also has a complimentary inspection tool namely the Silverwing Hand Scan HS 100 system that is ideal for storage tanks of diameters lower than 10 m, petal floor plate designs or in situ heating coils.
Silverwing's development of the Floormap has vastly reduced the time taken to inspect a tank floor whilst producing detailed and accurate reports allowing engineers to determine optimum maintenance strategies
The degree of inspection and repair that it is economically sensible to perform before the
whole floor is replaced will be influenced by many factors. These obviously include
material and contracting costs, but a major factor will be the time and cost of cleaning
the tank and preparing it for work. This latter cost will vary greatly depending on whether
the tank is holding clean, light product or is handling crude or heavy oil or a dirty liquid.
Computerised MFL floor scanner with STARS technology to
provide discrimination between top and bottom surface defects...
The MFLi3000 is a high speed, stop on defect magnetic flux leakage corrosion detection scanner
The easy to operate, reliable and cost effective
The Handscan MFL corrosion detection mini scanner is designed to compliment the, Floormap3Di, FloormapVS2i and MFL2000
The V-Series range of vacuum boxes is designed for weld leak detection in flat floor plate for both new build inspection and in-service inspection...