Offshore

Manual removal, de-mucking ejectors, and/or vacuum systems are used to ensure cost-effective and efficient removal of sediments, enabling inspections and repairs of all types of onboard tanks.

We have successfully completed large-scale NORM removal projects, including cargo tanks and topside installations at sea, to prepare assets for refitting or decommissioning. NORM services include expert surveying, sampling, laboratory analysis, decontamination, tubular cleaning, waste minimization, and mobile unit support to ensure the safe and compliant handling of naturally occurring radioactive materials.

We deliver in-service mechanical and construction solutions using rope access and conventional methods to minimize downtime and maximize safety. Our capabilities include decommissioning, rope access construction, structural welding, pipefitting, and complex rigging, including under-deck installations. We also provide cold cutting, flange facing, cable pulls and cable tray installation, and flange and valve mapping and identification. Our services extend to rope access insulation, including the installation and removal of insulation types commonly used in the Gulf of Mexico, as well as rope access inspection services. We perform in-service NDT inspections – including UT, PT, MT, and eddy current testing – for internal and external structures, supporting asset integrity, life extension, and ISIP programs.

We use a combination of high-pressure water (typically heated) and environmentally friendly degreasing chemicals to clean areas to be repaired to hot-work standards.

We can erect any type of scaffolding required onboard to access tank internals or carry out external maintenance and repair work on the vessel. We also have systems in place for hull repairs above the waterline, as well as for accommodations and engine casings.

We have completed numerous SPS installations to restore structural strength to offshore installations. SPS is approved by all major classification authorities as an alternative steel repair solution where crop-and-replace construction is difficult to execute during operations, such as on main decks or hull plating below the waterline.

Ultra-high-pressure (UHP) blasting with fresh water has largely replaced grit blasting as a surface preparation method for offshore use, and we have more than 15 years of experience with these systems worldwide. With a fleet of 25+ UHP machines designed for onboard use and a team of over 100 trained UHP operators, MSI can support blasting projects of any size.

Grit blasting is suitable for many types of project such as preparing areas for SPS overlay or ready scrubbers and filters for specialty coatings like vinyl ester glass flake products.

Using professional crews with spray-painting experience gained from coating repairs on over 500 vessels, we can repair or replace any coating system onboard.

We can carry out class-approved steel repairs to any onboard structures. We have replaced hundreds of tons of steel in tanks without any interruption to vessel operations.

We use modern equipment to cold-cut steel onboard for access, cropping, or removal. Piping, profiles, and steel plate up to 50 mm thick can be cut efficiently and cost-effectively using UHP water, without the need for cleaning or gas-freeing.

MSI and Trussco carry out the repair, replacement, and installation of hydraulic and pneumatic lines, as well as cargo heating systems. Using a combination of access lift platforms and rope access, we can repair or replace hydraulic lines and heating coils within tanks without interrupting vessel operations. We crop and renew piping of any size onboard and, by utilizing UHP water cold-cutting, can renew a wide range of process piping without the need for hot-work permits or the associated cleaning and preparation. We also offer fabrication of pipe sections, spool pieces, and other steel structures from facilities in Gdynia, Poland, and Port Harcourt, Nigeria.

As part of our pipe repair and renewal services, we provide fully qualified insulation specialists to replace and renew cryogenic insulation, allowing potentially significant corrosion under insulation to be identified and repaired.

We have a team of specialized personnel ready to undertake all types of asbestos removal onboard marine and offshore installations.

Whether refurbishing existing accommodations or installing additional POB capacity, MSI and Trussco offer qualified, experienced, and multi-skilled installers capable of managing projects from steel modifications through interior upgrades, including renewal of electrical and HVAC systems. Project management is coordinated from our Oslo (Drøbak) or Singapore offices. Additional POB capacity can be achieved through bridge conversions, expansion of existing accommodations, and/or the installation of containers fitted out as cabins or offices.

Corrosion remediation services include sand, hydro, soda, and garnet blasting; at-height rope access; ultra-high-pressure equipment up to 40K PSI; and inspection, painting, and coating services for industrial and commercial projects across the Gulf Coast region and beyond. These services are supported by a premier 24/7 onshore and offshore workforce with the size, depth, and experience to meet urgent operational demands.

Our rope access services enable safe, efficient offshore blasting, painting, and mechanical and construction support while minimizing the need for scaffolding. We perform abrasive and ultra-high-pressure (UHP) blasting using 40K and 55K units, supported by robotic and vapor blasting technologies for open areas such as decks and hull exteriors. Our capabilities include the application of internal tank linings, deck coatings, and fireproofing systems including Pit Char and Chartek. We also provide rope-access-assisted construction and operations support, suspended cable rigging to reduce scaffolding requirements, and Belzona Super Wrap II application and repairs. All work is backed by in-house engineered training and recertification programs for rope access, rescue, suspended cable rigging, and spider basket operations ensuring consistent safety, quality, and performance offshore.

Environmental cleaning services include comprehensive support for boats and barges, drilling rigs, NORM projects, offshore abandonments, production platforms, rig pit cleaning, tank and vessel cleaning, and spar hull inspections as part of turnkey offshore environmental solutions.