scope:

This NACE standard test method covers both new construction and maintenance ballast water tank coating systems for tension leg platforms (TLPs), semi-submersible platforms, and floating production and storage offloading systems (FPSOs).

Six test methods-cathodic disbondment, seawater immersion resistance, dimensional stability, aging stability, edge retention, and thick-film cracking-are used to evaluate these coating systems. The facility owners shall specify the acceptance criteria according to their specific requirements.

The ballast water temperature in a TLP or semi- submersible platform is normally below 25°C (77°F) and can be much higher in a FPSO, depending on crude oil temperatures. Therefore, FPSOs require one additional hot/wet cycling test.