What does SSPC-SP 3 represent in the context of cleaning standards?

SSPC-SP 3 refers to the standard for power tool cleaning. This cleaning method involves the use of power tools to remove rust, old paint, and other contaminants from the surface of a substrate. The goal of this standard is to prepare the metal surface adequately for coating application, ensuring that any loose material is removed and the surface achieves the necessary cleanliness level as specified by the guideline.

Power tool cleaning is an effective method for surface preparation, particularly in cases where abrasive blasting may not be feasible due to environmental concerns or the structure of the material being treated. It allows for precise control over the cleaning process, making it a preferred method in many applications outlined in marine and industrial painting specifications.

The other options describe different levels and methods of surface preparation that do not correspond to SSPC-SP 3, highlighting the specific nature of each standard in regard to cleaning techniques.