No-hot-work SPS installation on FPSO enables safe, time efficient and cost-effective permanent repairs

The recent installation of SPS on the Bo Hai Shi Ji, enabled the FPSO to remain in operation during vital repairs, saving time and money for owners, China National Offshore Oil Corporation (CNOOC).

Our team of experts recently conducted repair work to a corroded cargo oil tank on CNOOC’s FPSO, Bo Hai Shi Ji. The inner bottom plating in the tank required a permanent repair solution that would avoid disrupting FPSO operations and causing costly time out of service. As a durable, class-approved material, which requires no-hot-work, our structural composite, Sandwich Plate System (SPS), offered the ideal structural repair and strengthening solution.
A proven alternative to traditional crop and renewal techniques, SPS has been used in the industry for decades and offers a fast, non-disruptive solution, which delivers improved strength when compared to conventional steel structures. As the corrosion occurs from the Double Bottom Water Ballast Tank, SPS was applied on the deckhead in the Water Ballast to reinstate the inner bottom plating of the Cargo Oil Tank. It is the first SPS no hot work ‘underlay’ application. With the application carried out the double bottom water ballast tank, all the cargo tank can be remained in operations while the reinstatement process is on going.   
Unlike traditional steel, SPS can be installed without hot work, which enabled the Bo Hai Shi Ji to safely continue operations while repairs were completed to a cargo oil tank. SPS was installed using structural adhesives, on various portions of the inner bottom structure to reinstate the existing plating that had areas of localized corrosion. On this project, the SPS solution included a combination of pre-welded top plates, to the perimeter bars, and bonding and bolting for fixing the perimeter bars to the existing inner bottom stiffeners; elastomer was then injected into the cavities upside down. 
The composite panel created by the bonding of the solid elastomer core, to the existing top and bottom plates, reinstated the strength of the structure. By using SPS as a repair solution, CNOOC not only saved valuable time and money but improved the lifetime performance of its oil cargo tank.
Contact SPS Technology Asia to find out more about our Sandwich Plate System (SPS)

More News

The Seattle Space Needle, Century Project wins Engineering News-Record’s Project of the Year Best Renovation/Restoration

Originally built for the 1962 World’s Fair, the Space Needle has won the Engineering News-Record’s Project of the Year for Best Renovation/Restoration and we are delighted that SPS was an important piece of the overall winning formula.

Read More
Raising superyacht deck using SPS for maritime
Raising the deck height on a superyacht using SPS

SPS Technology licensee, SRC Estonia was asked to raise the main deck on a superyacht by 100mm to reach 5000mm ABL (minimum freeboard requirements), required by classification society, ABS.

Read More
Expansion of our SPS Brazil network
SPS Technology welcomes SSE Group and Megatherm to the SPS Brazil Network

We are pleased to announce the expansion of our SPS Brazil network, with the addition of SSE Group and Megatherm. As licensed agents, SSE Group and Megatherm will utilise our Sandwich Plate System (SPS) for a range of applications.

Read More