CSNRI Europe’s teams of highly trained leak repair and composite installation technicians are based at our Manchester office. Coupled with our wide range of qualified composite solutions, CSNRI also provides full turnkey pipeline and vessel repair services to energy companies in the UK.
CSNRI understands our clients’ needs us to respond to urgent situations and we have a proven history of responding to requests 24/7. They may arrive at 9 AM on a Monday morning or 10 PM on a Sunday evening, irrelevant of time, our teams understand the need to do whatever is needed to meet Heli check in deadlines or supply boat departures.
CSNRI staff are trained leak seal technicians who hold full competency certs for installation of all composite systems. We recognize that even when a system can be shut down or isolated there is often a residual leak of fluid. Often if the line is production or safety critical, such as a deluge line, an isolation is not possible. CSNRI has developed several live leak sealing methods including our Composite injection leak seal system to arrest leaks and allow installation of an ECR (Engineered Composite Repair).

Typical pipe defects repaired by CSNRI UK Team include:
Leaking CuNiFe lines
Leaking Swivel flanges, where the line holes behind the flange
Leaking or thinned Produced water lines
Leaking of Thinned produced oil lines
Fire water lines
Deluge lines
Heater Medium
Glycol lines
GRE lines
Hypochlorite lines
Vessel repairs
Caisson Repairs
Closed/ Open Drain Repairs
Diesel lines
Hydrocarbon Lines
Sub Sea Repairs
Deck repairs
Heli netting support repairs.
Blast wall repairs
Wind wall repairs
Leaking valves



A 6.4m diameter sluice storage tank, in service for 20 years, developed severe external corrosion at its base, compromising structural integrity. Replacing the tank would have caused major production downtime and significant costs. CSNRI proposed a composite repair solution using Atlas, a high-strength carbon fiber system, to restore strength without shutdown.
Cordemais, France Summary The EDF (Electricite de France) plant located in Cordemais is the largest thermal power facility in France. The coal-fired plant produces a significant amount of electricity from fossil fuel. The power station has been in service for more than 40 years. Over the decades, the flu gasses caused internal corrosion in the…
At a large refinery in the UK, a 16” carbon steel crude transfer line had suffered external corrosion, including a through-wall defect. At the request of the refinery owner, CSNRI engineers surveyed the damage and recommended a six-layer application of ThermoWrap MT to repair the defect, mitigate the corrosion, and restore the full function and structural integrity of the line.
In the northern UK, an independent British energy producer experienced failed flange welds on an 18” fire main, resulting in a leak. A solution was required that would arrest the live leak, prevent further leaks, and reinstate the strength and structural integrity of both defected flange sets. CSNRI engineers recommended a 10-layer application of ThermoWrap MT to restore the line to its original design capacity and extend its service life.
UK Summary A European chemical manufacturer and producer of pharmaceutical-grade reagents experienced pipe erosion and corrosion, including an internal through-wall defect in a heat exchanger. The exchanger was an important part of an aging unit in a chemical plant that produces ethylene vinyl chloride. The unit was scheduled to be completely replaced in a major…
UK Summary A 50.8-mm (2-inch) transformer cooling line in a nuclear plant had ruptured, and there was no way to isolate the line, which was leaking 3.75 liters (1 gallon) of transformer oil every hour. With the unit’s two other transformers offline for maintenance, it was critical to address the leaking line quickly without interrupting…
UNITED KINGDOM Pipe Details 152-mm (6-inch) Butane Jetty Line 200-mm (8-inch) Propane Jetty Line Summary External corrosion on 152-mm (6-inch) and 200-mm (8-inch) import jetty lines Pit depths in the lines were up to 5.5 mm (0.22 inch) amounting to 70% wall loss Trained local contractors carried out repairs, installing Snap Wrap to restore straight…
UK Pipe Details 711-mm (28-inch) pipe tee section on an offshore platform Design Pressure: 14 bar (203 psi) Operating Pressure: 6-10 bar (87-145 psi) Design Temperature: 80°C (176°F) Summary 711-mm (28-inch) pipe tee section at height in a difficult-to-reach area on an offshore platform Proprietary composite injection system sealed the leaks ThermoWrap MT covered the…
United Kingdom Pipe Details 457-mm (18-inch) line transporting gas oil External corrosion 6 mm (0.24 in) deep, leaving 24% wall thickness remaining. 80 mm (3 in) x 80 mm (3 in) pit 17.6 Bar (255.2 psi) operating pressure 40°C (104°F) operating temperature Summary A 457-mm (18-inch) line transporting gas oil on an over-water jetty required…
UK Pipe Details 28-inch (711-mm) Carbon Steel line carrying Butane Design Pressure 12.26 barg (178 psi) Design temperature145ºC (293ºF) Operating temperature 81ºC (178ºF) Summary A 28-inch (711-mm) carbon steel line carrying butane had sustained significant corrosion ThermoWrap MT was used to repair the critically corroded area 3 CSNRI technicians completed the installation in 32 hours…

