Reinforcing structural resilience: blast wall repair on a North Sea platform

Client Challenge

Sections of a blast wall aboard a North Sea Platform were identified with severe wall loss and through-wall defects attributed to external corrosion. The structural integrity of the blast wall was compromised, necessitating a solution to address the corrosion-related challenges and reinstate its robustness.

What We Did

We provided an engineered design calculation, Technowrap™ SRS materials, and deployed Rope Access trained technicians. The goal was to deliver a fully engineered repair that would effectively restore the integrity of the blast wall. The on-site construction of compression boards was crucial to achieving the required compression levels during the curing process. Following grit blasting, 15 bays, each measuring approximately 2 meters, were profiled using Technowrap™ FP. Subsequently, two layers of Technowrap™ SRS were applied, utilising the Technowrap™ DRS resin system to enhance impact resistance.

Results

The repair of the blast wall on the North Sea Platform yielded significant results and benefits. The application of Technowrap™ SRS not only provided excellent corrosion resistance but also showcased its high strength capabilities, reinforcing the structural integrity of the blast wall. Despite the challenges, including severe wall loss and through-wall defects caused by external corrosion, the engineered design, in accordance with the original parameters, successfully reinstated the wall for an extended 20-year lifespan. The utilisation of Technowrap™ FP for profiling and the application of two layers of Technowrap™ SRS with the Technowrap™ DRS resin system ensured enhanced impact resistance. This comprehensive repair not only addressed immediate concerns but also positioned the blast wall to withstand future challenges, offering long-lasting structural resilience to the North Sea Platform.