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At Dare to prepare in Geluwe, Nathan Knight gave an overview of recent developments in industry standards linked to surface preparation before a coating system is applied. This lecture is a video recording of the speech he provided.

The content of his lecture is focused at standards for surface preparation. There are two relevant organisations that have developed standards. AMPP (A merger of the former NACE and SSPC) adn secondly, in a more European context, ISO. ISO also has a number of (coating) standards within which surface preparation is specified.

Within AMPP, SC05 is responsible for, among other things, the much-mentioned power tool standards:

  • SSPC SP 3 – Power Tool Cleaning – requires removal of loosely adherent materials; no requirement for minimum surface profile
  • SSPC SP 15 – Commercial Grade Power Tool Cleaning – random staining of no more than 33% of surface; the surface profile shall be a minimum of 25 micrometers (1.0 mil). 
  • SSPC 11 – Power Tool Cleaning to Bare Metal – trace amounts of coating permitted in pits and generally no staining allowed on the surface (up to 5% for level 3 cleaning); the surface profile shall be a minimum of 25 micrometers (1.0 mil). 

Nathan discusses the developments within the committees in detail. He also discusses the simultaneous developments in Europe regarding ISO 8501 and ISO 8504-3. Besides these well-known surface preparation standards, Nathan also grasps insights with regard to the regulatory activities in Europe (REACH) and the United States (OSHA). In both geographical areas, many developments are taking place in the field of surface preparation debris (hazardous waste) including solvents, microplastics, heavy metals – chromium, arsenic, cadmium. This is relevant for coating applicators, but certainly also for coating manufacturers.

In the last part of the lecture, Nathan specifically addressed the development of laws and regulations on Biphenols, and in particular the restriction of Bispehonl A and other Biphenol compounds (B,S,F,AF).




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