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DZI Cofferdams

Inspection Services

Inspection DZI’s are small and easily manoeuvrable. Such DZI’s are usually 2,5 m long and 1,25 m wide. The total depth is adjustable to the requirements of the quay construction. Thanks to the “small” size and “light” weight, this DZI fits on a truck and can be moved to a specific location on the quay wall for quick dewatering.

Cofferdam inspection

These DZI’s are popular for inspection purposes of underwater structures or for local repairs that cannot be performed by divers or from the top of the quay. They can be used on concrete or steel constructions for:

  • Measuring remaining steel thickness,
  • Inspection of corrosion,
  • Inspection for biological or bacteriological corrosion,
  • Assessment of coating condition,
  • Inspection of cathodic protection (sacrificial anodes or impressed current),
  • Assessment of anchors,
  • Inspection (and immediate repair) of concrete cracking,
  • Anomaly repairs of for example drainage outlets, mooring equipment, etc.
  • Injection of backfill to restore loading capacity of quay walls.

Acotec can offer the full scope and perform the full inspection or repair, including assessment of corrosion and advice for repair/maintenance. You can also use the DZI for your own inspectors or your own repair team.

Contact us

Contact the Acotec Team for more information.