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ing ROV thrusters and guiding aids so (2020), with a prototype supported from part-owner-incubator Kongsberg that it doesn’t need the support of an initially by an ROV. The technology Innovation to make this happen. Just

ROV or diver to move it into position. will be ready to be deployed on com- like the composite repairs, the process

It’s been designed to be completely mercial applications and operations in would be done inside the Nautilus self-contained, including waste mate- Q3 2021, Carlsen says. Kongsberg Fer- platform using additive manufacturing rial, so all materials produced during rotech is initially targeting Southeast techniques to rebuild damaged metal the process, such as pipe coating that’s Asia where it says there’s a relatively structures in-situ. “It’s like building the been removed to carry out the repair, large amount of wet gas production equivalent of a steel clamp directly on are contained and returned to the sur- where internal corrosion is a common to the pipeline with off-the-shelf mate- face. Throughout, the entire process is issue. PTTEP of Thailand has been our monitored by cameras, says Carlsen, partner through the development of the so the client can witness it from start Nautlus, and will also be the pilot cli- to fnish. Repairs can cover a range of ent for introducing the service in the defects from small pits to through-wall region, says Carlsen.

defects, because of the fexibility af- In tandem with commercializing the forded by applying composite materi- composite repair system, it has been als, with curing of the polymer using working on adding 3D printing to potable water, the frm says. Nautilus’ capabilities and has recently

An in-water test composite repair joined forces with Equinor, SINTEF test using the system was completed in and Gassco, with Norwegian National

Trondheim Fjord in Norway last year Research Council funding and support

JULY/AUGUST 2021 OFFSHORE ENGINEER 35