Case Study Overview
Profiled steel plates were fabricated and assembled at R7M facility at Ipswich. Using R7M welders the structure was full penetration welded together. As the structure was to be assembled sub surface using divers the structure had to pre- assembled and test fitted to ensure easy assembly. After fabrication the entire structure was shot blasted to SA 2.1/2 and painted with 2 coatings of 125 micron Epigrip C425V2 zinc phosphate primer plus 1 No 400 micron coating of Epigrip M922.
Cathodic protection was prefitted to the diffuser before delivery to site. Assembly tools and bolt racks were designed and fabricated to assist the divers with the installation. Total fabricated weight was 21t in 6 pieces
At a glance
- Project: Fabrication of outfall diffuser and pile guides
- Location: Ipswich R7M fabrication facility
- Project Cost: £39510
- Programme Duration: 6 week fabrication and painting programme completed on time
- In-House resources Work: All fabrication and coded welding works by R7M personnel
- Sub-contractors Work: Blasting and painting on site of steelwork. MPI and UT testing by third party
The Solution
Fabrication was started prior to complete design being finalised with additional information being supplied by dive surveys.
As the fabrication was being done in house this allowed modifications to be carried out to suit the installation requirements prior to arriving at site.
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