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Floorscanner

MEC-SCANTM Floorscanners

Innospection Floorscanner MEC-F15

 

The MEC-SCANTM Floorscanners are designed and built for high speed, high performance inspection applications. Based on the Saturation Low Frequency Eddy Current technique, the MEC-SCANTM Floorscanners allow the detection of topside and underside corrosion in coated and uncoated tank floor plates.

This dynamic inspection technique utilises Eddy Current in combination with a magnetic field which has been proven in the industry to be superior to techniques like Magnetic Flux Leakage System. The MEC-SCANTM Floorscanners have powerful scanning capabilities in excess of 3 times the material thickness and 5 times the coating thickness. They are also capable of detecting defects less than half the size of what is able to be detected by the MFL technique.

Its superiority includes the unique feature of differentiation between the topside and underside defects as well as distinguishing defects from false calls by means of the signal phase. It is also able to inspect both ferrous and non-ferrous materials.

With its dedicated colour mapping and reporting software, accurate and reliable inspection results are provided in real-time in the form of an extensive colour overview of the condition mapping, C-Scan report, statistical analysis overview, individual defect listing and repair plate report.

 

Key Features & Benefits

  • High defect detection sensitivity for corrosion and pitting in tanks
    • with wall thickness to 30mm
    • with coating thickness to 10mm
  • High inspection speed of approx. 25m/min
  • Average accuracy of +/- 10%
  • Detection capability of internal and external defects from <10% wall loss, depending on wall thickness and defect size from Ø 3mm
  • Detection and distinction between topside and underside defects as well as false calls
  • Ability to inspect stainless and carbon steel tanks
  • Designed to cover maximum inspectable areas of floor plates and overlap welds, including close to the shell
  • Minimal surface preparation prior to inspection
  • Allow tolerances in material magnetic properties

 

Technical Data

 

General Specifications

 MEC-F15MEC-F30
Scanner Base (L x W x H; Weight)632 x 310 x 160 mm; 61kg632 x 415 x 200 mm; 82kg
Scanner Arm (L x W x H; Weight)197 x 266 x 1000 mm; 17kg197 x 266 x 1000 mm; 17kg
Control Box (L x W x H; Weight)201 x 463 x 315 mm; 3kg201 x 463 x 315 mm; 3kg
No. of Sensors88
Sensor width37.5 mm each50 mm
Scanning width300 mm400 mm
Wall thickness range (*1)0 – 15 mm0 – 30 mm

 

Power Supply Unit

 MEC-F15MEC-F30
Outside the tank110 – 240V AC (50/60Hz), optionally external battery packs available110 – 240V AC (50/60Hz), optionally external battery packs available
Motor & electronics inside the Tank24V DC24V DC
Dimensions (L x W x H; Weight)500 x 400 x 200 mm; 15kg500 x 400 x 200 mm; 15kg

 

Signal Cable

 MEC-F15MEC-F30
Typical cable length (*2)100 meter100 meter
Weight0.3kg/m (30kg Std. length)0.3kg/m (30kg Std. length)

 

Eddy Current Unit & Computer

 MEC-F15MEC-F30
ElectronicsMultiple Channel Eddy Current System with Eddy Current and Multiplexer Electronic Units mounted on scanner unitMultiple Channel Eddy Current System with Eddy Current and Multiplexer Electronic Units mounted on scanner unit
ComputerIndustrial laptop system connected via USB port to Multiple Channel Eddy Current System with either:

- laptop mounted on scanner drive panel, or

- laptop based separately and connected via the scanner umbilical
Industrial laptop system connected via USB port to Multiple Channel Eddy Current System with either:

- laptop mounted on scanner drive panel, or

- laptop based separately and connected via the scanner umbilical

 

Internal Defect Sensitivity at mid WT Range

 MEC-F15MEC-F30
Typical smallest defect size (*3)~ Ø 3 – 5 mm~ Ø 3 – 5 mm
Typical smallest defect depth (*4)From 10% - 20%From 10% - 20%
Max. stand-off / coating from mid WT range5 - 7 mm8 - 10 mm

(*1) Refers to the typical wall thickness range of standard material; may vary depending on material quality.
(*2) The length of cable is divided into sections of 30m – 50m units; extended cable length available on request.
(*3) Refers to possible detectability, depending on scanner stand-off, quality of material and general surface condition.
(*4) Refers to possible detectability, depending on general surface condition.

 


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