Pipeline RehabilationPurethane coatings have all the attributes of a high performance shop coating, yet can be applied at site using Portable spray equipment. This makes them ideal for pipeline rehabilitation applications.
Typical performance criteria for pipeline recoating materials are generally the same as those for new pipelines. The recoating materials should be able to afford high performance for the remaining usable lifetime of the pipeline.
Additional important factors to be considered as per NACE International, USA Technical Committee Report, Task Group T-10D-17/T-6A-63, dated July 1999 "Coatings for Repair and Rehabilitation of the External Coatings of Buried Steel Pipelines" are :
- Cost of the coating material and the overall recoating project
- Recoat interval and/or time to backfill
- Daily production rates at which coating can be applied
- Chemical compatibility of the old coating and new coating at transition areas
- Resistance to soil stress
100% Solids Polyurethane coatings are ideal for pipeline rehabilitation and are the industry coating of choice worldwide for this application.Other than providing the high performance of a newpipeline coating, it can be applied at fast application rates using simple portable equipment and cures rapidly for return to service.
Line travel equipment is available for rehabilitating multi kilometres of pipeline in a day.Long term performance of Hot & Cold Applied Tapes leaves much to be desired with many problems associated with Soil Stress, Temperature and Handling.