Which SSPC specification involves solvent cleaning methods?

The correct answer is SSPC-SP 1, which specifically pertains to solvent cleaning methods. This specification outlines procedures to effectively remove contaminants such as oil, grease, dirt, and other soluble materials from surfaces before painting or coating applications. The intent of SSPC-SP 1 is to ensure that surfaces are clean enough to allow for proper adhesion of the subsequent paint or coating system, which is critical for the long-term performance and durability of the finish.

This specification is vital in surface preparation because the presence of contaminants can lead to failure of the coating, including peeling, flaking, and corrosion. By following the guidelines laid out in SSPC-SP 1, inspectors can ensure that the initial cleaning process meets the necessary standards for optimal bonding and service life of the protective coatings applied thereafter.

The other specifications mentioned are related to different aspects of surface preparation and inspections, but they do not specifically address solvent cleaning methods like SSPC-SP 1 does. For example, SSPC-PA 2 deals with the measurement of film thickness of coatings, while SSPC C-14 and SSPC C-13 involve guidance on inspection criteria and standards for specific types of coatings, rather than methods of cleaning surfaces prior to coating.