Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 9: Protective paint systems and laboratory performance test methods for offshore and related structures
ISO 12944-9:2018 describes paint systems for high durability according to ISO 12944-1.
ISO 12944-9:2018 is applicable to structures made of carbon steel and does not cover Cd/Bi Cr and Zn/Bi Cr surfaces. It is not applicable to surfaces under insulation or concrete.
This document is applicable for paint systems intended for a service temperature range between -20 °C and +80 °C, and the performance testing is aimed at verifying suitability of the paint systems for this temperature range.
ISO 12944-9:2018 is applicable for paint systems for submerged service (Im4) which are intended for ambient operating temperatures up to a maximum of 50 °C.
ISO 12944-9:2018 specifies:
- the test methods to be used to determine the composition of the separate components of the protective paint system;
- the laboratory performance test methods for the assessment of the likely durability of the protective paint system;
- the criteria to be used to evaluate the results of performance tests.
ISO 12944-9:2018 covers the requirements for new work and any repairs necessary before start-up. It can also be used in relation to maintenance where complete refurbishment is carried out and the underlying metal substrate is completely exposed by abrasive blast-cleaning.
ISO 12944-9:2018 does not address maintenance in general where methods of surface preparation other than abrasive blast-cleaning are typically used.
ISO 12944-9:2018 deals with structures, made of carbon steel of not less than 3 mm thickness, which are designed using an approved strength calculation.
The following are not covered by this document:
- structures built of stainless steel as well as those built of copper, titanium or aluminium or their alloys;
- steel cables;
- buried structures;
- the interiors of storage tanks.