Owner 
Confidential
Location 
UAE
Project Team 
STRUCTURAL
Specialty Contractor
STRUCTURAL TECHNOLOGIES
Consultant

Dry Docks

Project Highlights 
  • The total anode installation area was about 43,000 ft2
  • The system is powered and controlled by a state-of-the-art Supervisory Control and Data Aquisition (SCADA) enabled remote monitoring and control system
Project Description 

The dry docks are one of the largest facilities of its kind, the integrity and durability are critical to its operation and success.
The forensic investigation determined that due to the very aggressive marine and humid environment, advanced stages of chloride-induced corrosion had resulted in large areas of delamination within the pump house slabs and dock slabs behind the dock gates.

 

Technical Summary

STRUCTURAL was appointed as a solution provider on a design-build basis for concrete repair and cathodic protection works. The entire works were carried out around the operational requirements without any shutdown or forced reduced output.

The delaminated and spalled concrete was repaired in accordance with ACI. An impressed current cathodic protection (ICCP) system was installed across the entire area to arrest any on-going corrosion which had not yet resulted in delamination of the existing slabs and prevent future corrosion of the repair areas.

The ICCP system comprises coated titanium anodes which are monitored by permanently installed reference electrodes.

The total anode installation area was about 43,000 ft2.

The system is powered and controlled by a state-of-the-art Supervisory Control and Data Aquisition (SCADA) enabled remote monitoring and control system, which provides the client with efficient means to monitor and verify the performance of the cathodic protection system from a single location. A unique feature of the SCADA system is its ability to integrate additional ICCP zones or systems added at a later date; this provides the client with a flexible system providing added value. This type of system can also be integrated into other SCADA BMS systems which are installed on most industrial facilities and some larger commercial buildings.

The Engineering and technical support for the project was provided by STRUCTURAL TECHNOLOGIES and the implementation was efficiently executed by STRUCTURAL.

Having both the concrete repair and cathodic protection implemented by STRUCTURAL resulted in a very efficient installation and QA/QC implementation. Due to the overlap of these two scopes, lower direct project costs and operational costs can be achieved when performed at the same time by the same contractor.

The system is being commissioned in accordance with international standards provided by BS and NACE.