Dual clamp-on anodes
Sacrificial anode retrofit system for aging structures
Dual clamp-on anodes are designed to replace spent platform anodes on structural members.
A dual clamp-on is two full-size platform anodes welded to an attachment spacer with a contact tip built into the space. The assembly is lowered from the surface and divers position the anodes. Once they can get close, a U-bolt is used to secure the new anodes. After the U-bolt has been tightened, a pointed tip is threaded into contact with the structural member, creating electrical continuity and cathodic protection.
Applications
The dual clamp on anode was originally designed to replace one-for-one welding of individual replacement anodes. It is used on the following assets:
> Offshore platforms
> Docks and jetties
Dual Clamp-on Anodes Gallery
Diver installed
Dual clamp on anodes installed on the shallow portions of the structure.
Replace depleted anodes
Dual clamp-on anodes are designed to replace platform anodes on structural members.
Supplemental current
On deeper structures, it is sometimes necessary to use a combination of Retropods on the sea floor and Dual clamp-ons near the surface.
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