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This paper will provide information on current SSPC training and certification programs related to industry standards and practical aspects of selecting, specifying, and using coatings safely, effectively and economically to protect structures in harsh marine environments.
Common methods of maintenance painting have either involved complete removal of existing paint (e.g., SSPC-SP 10, Near White Blast Cleaning) or highly localized preparation of corroding areas using power or hand tools (e.g., SSPC-SP 2 or SSPC-SP 3). Sometimes projects may be designed to an intermediate level where the intent is to reduce the surface preparation level of effort by allowing “good” coatings to remain. In these cases, abrasive blasting or ultra-high pressure water jetting may be used to prepare the entire surface, but well adhered aged coating is allowed to remain.
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Coating specifications frequently reference industry standards from organizations such as SSPC, ASTM, ISO and NACE. While specifications may reference a specific version or “year,” many simply state, “the latest version of the standard applies.” Many standards writing organizations require a review of the content of their documents every 5-years (or more frequently), and updates/revisions to standards can and oftentimes do occur. And new standards are developed and published to fill voids when a need for a standard is identified.
Zinc-rich coatings have long been known to provide excellent corrosion resistance in highly corrosive environments, in general,inorganic zincs for new construction and organic zincs for maintenance. A recent trend has been toward zinc-rich coatings with reduced levels of zinc dust. An SSPC committee formed to revise SSPC Paint 29, Zinc Dust Sacrificial Primer, Performance Based, to reference performance only, removing reference to minimum zinc dust level.