Corrosion damage to high pressure transmission pipelines can lead to a re-rating of the pipeline for lower pressures – and subsequently reduce the commercial operation of the pipeline. In severe cases, a pipeline blow-out can occur, resulting in severe safety, environmental and commercial consequences.
Savcor ART utilises several technology solutions to assist pipeline owners and operators in maintaining the required level of integrity for their pipeline infrastructure.
The process starts with direct current voltage gradient coating defect assessment surveys, to locate areas of external coating damage on the pipeline. Target locations are then excavated and examined using relevant non-destructive techniques. Depending on the level of metal loss encountered, the pipeline is then rehabilitated using designed carbon fibre wrap on a fibreglass substrate. Specific epoxies are utilised to ensure 100 per cent solids penetration of the carbon fibre.
Once repairs have been completed, the hoop strength of the pipe exceeds 100 per cent of the initial design. This increase in strength occurs because carbon fibre is highly durable and non-corrosive. Similarly, ply design can be altered for specific applications, for example tee-offs, valves and longer defect areas.Article continues below…
Savcor says that carbon fibre pipeline repair methods are up to three times faster than traditional repair methods, such as fibreglass wrapping or steel sleeving.