COLD WORK
What is the SPS Cold Work Solution?
The steel condition of any offshore asset is paramount to its strength and structural integrity. The above animation follows the SPS Cold Work process, which begins with meticulous surface preparation.
NO HOT WORK
Onshore Fabrication • Offshore Installation
Step One: Structural adhesive application.
Structural adhesive is applied to the underside of a pre-drilled perimeter bar, forming the cavity boundaries on the deck.
Step Two: Elastomer spacer placement.
Engineered elastomer spacers ensure uniform design depth within the cavity, preventing the new top plate from sagging and maintaining a flat surface.
Step Three: Additional adhesive application.
Additional structural adhesive is applied around the edges of the cavity on the existing deck.
Step Four: Top plate installation.
The pre-drilled top plate, often with perimeter bars pre-attached, is positioned and mechanically fixed to the perimeter bars using SPS bolts.
Step Five: Ventilation system setup.
Ventilation ports and flow control valves are strategically placed on the top plate to ensure proper air expulsion during the injection process.
Step Six: Injection of liquid elastomer.
An injection machine connected to the injection port flow control valve injects liquid elastomer into the cavity, filling it in less than five minutes.
Step Seven: Solidification and bonding.
Within 15 minutes, the elastomer solidifies, creating a robust bond between the new top plate and the existing deck. This critical phase of the SPS Cold Work installation concludes within 60 minutes.
Choose SPS Cold Work
Beyond its advantages in enhancing main deck strength, SPS delivers a long-term, class-approved, and cost-effective in-situ solution for offshore asset repair and new build projects.
SPS Cold Work requires up to 90% less labour and a staggering 56% less steel than conventional techniques. This not only streamlines the repair process but also contributes to cost-effectiveness: SPS is up to 11x less expensive for offshore repairs. It’s also 4x faster than steel crop and renewal methods in a shipyard if your asset is already in drydock.
SPS Cold Work eliminates the need for dive boats and underwater cofferdams, breaking away from traditional constraints. This opens possibilities for working in adjacent areas simultaneously, allowing project timelines to be expedited as the structure remains intact.
And, ultimately, the biggest advantage for everyone is having a ‘no hot work’ solution to repairs. There is no need for welding, no requirement for tools that shock or spark, and seafarers stay safe!
SPS Cold Work repair and strengthening is suitable for all areas on FPSOs plus other offshore assets and tankers.
- Decks
- Side Shell
- Bottom shell
- Bulkheads
- Longitudinal and transverse frames
- Tanks
- Helidecks
- Pipes
Compared to Crop and Renew, SPS offers:
55% less carbon dioxide equivalent 70% less welding (100% for Cold Work) 60% less new steel 90% less O2 and acetylene cutting (100% for Cold Work) 75% shorter schedules
Compared to Crop and Renew, SPS offers:
55% less carbon dioxide equivalent,
70% less welding (100% for Cold Work),
60% less new steel
90% less O2 and acetylene cutting (100% for Cold Work)
75% shorter schedules
How does SPS compare to other repair solutions?
SPS Sandwich Plate System
Non-Sandwich Composites
Other Sandwich Composites
Traditional Steel Renewal
IACS Class Approved as Permanent Solution > 20 years
Cold Work Method Availability
Cost Effective
Less Embodied Carbon for Structural Repair
Reinstatement Beyond As-built Thickness Strength for Corrosion Repair
Blast, Ballistic and Impact Protection
Vibration Damping Properties
SUSTAINABILITY
Maritime & Offshore Sustainability with SPS Cold Work Repairs
A noteworthy aspect of SPS Cold Work is its sustainability. The process minimises waste and reduces environmental impact by reusing existing corroded plating as one-half of the composite. This innovative approach aligns with contemporary demands for green practices in the maritime and offshore sectors.
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