Methodologies for Evaluating and Qualifying External Pipeline Coatings for Northern Pipelines

The design of coatings must be adequate to protect pipelines under long-term, severe environmental conditions, including the extreme climatic conditions that will apply in the North before the pipe is installed and operation begins. Practices and standardised methodologies for evaluating and qualifying pipeline coatings for application in northern pipelines are discussed.  Results from laboratory and field experiments, carried out under the conditions to which coatings will be exposed during construction, are presented.