This paper reviews the Polypropylene coating materials and systems available for high temperature
applications, (up to +140°C for thermal insulation subsea and currently 110°C onshore). A number of
interesting case studies are presented and papers are reviewed on coating failures. It also examines
the selection of fusion bonded epoxy and field joint solutions with their advantages and disadvantages.
Some available data, possible requirements and test regimes that could enable qualification of
Polypropylene materials for temperatures above 110°C onshore are reviewed and discussed.
Key words: Polypropylene, high temperature, pipelines, coating, hot water soak, cathodic
disbondment, thermal ageing, field joints.