The repair of corroded pipelines with fiber-reinforced composite materials is a well-developed practice in the oil and gas transportation industry. For some pipes, decades of service of large, buried pressure pipelines have led to deterioration that threatens the structural integrity of the lines. In fact, more than 60 percent of the world’s oil and gas transmission pipelines are more than 40 years old and, for the most part, are in urgent need of rehabilitation in order to re-establish the original operating capacity.
Further, pre-stressed concrete cylinder pipelines (PCCP) become corroded and reinforced concrete pressure pipes, steel, and ductile iron pipelines will also need to repair to extend service life.
At RAK, we’ll repair failing or corroded gas lines in a way that provides wear, erosion, corrosion protection, and chemical resistance under high operating pressure and temperatures.
The advantages to FRP pipeline repairs are clear:
- Trenchless process: prevents the cutting of roads and other surface structures
- Segmental repair system: prevents costly alternative methods such as slip lining. In addition, these systems allow full structural rehabilitation of only distressing pipe segments
- Prevention of internal diameter loss: rarely adds more than ¼-inch thickness to the pipe, significantly less than any other rehab system out there
- Speed of completion: allows emergency repairs to be completed with minimal downtime
- Completely non-corrosive system: ensures that corrosion-related damages do not recur in rehabilitated pipe segments
- NSF 61 certification: includes every component of the repair system from the fibers and primers to the resins and composites
- Durability: Full-scale testing, weatherability studies, and in-field service life have proven the durability of FRP-based systems
- Environmentally friendly: ensures that the VOC-content of composite systems is well below EPA’s hazardous air pollutant (HAP) allowable. This is ideal for work performed in confined spaces such as inside pipelines.