Inspection Technology

Announcing the Launch of the Nautilus System

PICA is thrilled to announce the launch of the innovative, patented Nautilus system by Aganova group. The Nautilus is comprised of a small diameter sphere - 60 millimetres - which is integrated into the water distribution system, where it journeys freely through the pipeline, propelled by the water flow.

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The HydroScope Advantage

HydroScope is the world’s first field-proven in-line inspection service for corrosion evaluation of cast and ductile iron water and waste mains. The HydroScope tool is an original technology providing a direct measurement of pipe wall width continuing along the length of the waterline; it senses corrosion, pitting, wall thinning and graphitization.

The HydroScope was developed to satisfy an urgent need for cost-effective management of water and wastewater distribution infrastructure. Accurate determination of pipe condition permits knowledgeable scheduling of expensive rehabilitation activities with planned risk management.

Asset Management Benefits

Operating Costs:

  • Pipe condition baseline surveys
  • Planned vs. unplanned repairs
  • Identify high-risk failure locations
  • Avoid relining or replacing sound pipe prematurely
  • Identify alternate rehabilitation method parameters
  • Extend service life of low-risk pipe

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RFT Technology Described

PICA’s pipeline inspection tools consist of flexible in-line tools that employ Remote Field Technology (RFT) for measuring pipe wall thickness. RFT technology works by detecting changes in an AC electromagnetic field generated by the tool. As the field passes through the pipe wall it is attenuated and delayed (it becomes stronger in areas of metal loss and the time delay is less). The field interactions are measured by on board detectors, and subsequently processed on the tool itself using A/D converters and DSPs. The processed data is either stored onboard, or sent to the above-ground world over a multi-conductor wire-line for storage on a laptop. Once all the data is acquired, sophisticated analysis software is applied to generate accurate information on the wall thickness of the line. Figure 1 (below) schematically shows the magnetic coupling path between the exciter section of the tool and the detector array.

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