Rehabilitation of a pipeline coating due to  failure is a key concern for a  pipeline operator.  The operator’s goal is to try and provide the same performance as its original.

The standard, ISO 21809-3 provides for optional materials to repair pipeline coating failures.  To determine which one is suitable for a specific project requires the expertise address the following concerns:

1. To address the true technical reason for the cause of the coating failure such as:     

　　- change in geological conditions or soil stress;     

　　- inconsistency in cathodic potential due to the expansion of the civil construction;     

　　- coating material degradation;     

　　- poor application quality during the coating application;     

　　- cathodic shielding.

2. To address the best practices to have the most economic rehabilitation system such as:     

　　- Is there a need to strengthen the mechanical properties before coating rehabilitation?     

　　- Is it possible to shut down the pipeline to rehabilitate the coating? 

      - What is the main concern on the performance of rehabilitation system?

　　- What is the most economic method to carry out the rehabilitation?     

　　- The location of the rehabilitation   

　　- The capacity of the recent Cathodic Protection system.

Please contact us for the further information.

REHABILITATION