Floormap3D - discriminate between Top and Bottom surface originating corrosion

http://www.silv...on_mapping.aspx

Silverwing's Floormap3D with STARS technology is the highest performance
Magnetic Flux Leakage (MFL) storage tank inspection system on the market
today. Building on the best selling FloormapVS2i, Silverwing has developed
surface topology measurement of tank floors using air-gap reluctance system
(STARS) to provide discrimination between top and bottom surface defects,
enabling tank engineers to determine the optimum repair strategy and improve
risk life assessment (RLA) & risk based inspection (RBI) maintenance programs.

The innovative STARS technology (patent pending EU: GB105193.5,
GB1110889.1, GB1109371.3 and USA: 13175440) adds an additional set of
sensors to detect variation in magnetic field strength caused by top side
defects, and combines this with traditional MFL indications to identify top or
bottom location. The Floormap3D has a total of 256 sensors, enhancing lateral
resolution to detect smaller defects, and reduce sensitivity to defect orientation.