SSPC-SP 1 - Answers Solvent Cleaning
-Defines that the end condition of a solvent-cleaned, metal surface, "shall be free of visible oil, grease,
dust, dirt, drawing and cutting compounds, and other visible soluble contaminants, when viewed
without magnification
-Invoked by nearly all SSPC and NACE surface cleanliness standards, including power tool cleaning and
abrasive blast cleaning
ISO 8504-3 - Answers Solvent Cleaning
-removing visible oil, grease, soil and machining lubricants
-removing non-visible soluble contaminants from steel surface
-used before hand or power tool cleaning
SSPC-SP 2 - Answers Hand Tool Cleaning
-Manually chipping, scrapping, brushing, and sanding the surface to remove foreign material
-can typically remove ALL loose mill scale, coatings, rust, and other loose detrimental materials
-This method along CANNOT be used for most high-performance coating systems or systems that
require a truly clean substrate
SSPC-SP 3 - Answers Power Tool Cleaning
-Removing loosely adherent mill scale, rust, paint and other foreign matter
-Can by impact and/or abrasion and are used frequently for small repairs or spot cleaning of damaged
coatings
-Can create a surface profile depending on the tool - typically can't create a uniform surface profile
(Includes SSPC-SP 11 / SSPC-SP 15)
SSPC-SP 11 - Answers Power tool cleaning to bare metal
-Removing tightly adherent mill scale, rust, paint, and other foreign matter
Levels 1 (0% of rust or paint residue allowed at pit bottoms)
, Level 2 (0% of rust or paint residue allowed at pit bottoms)
Level 3 (5% of rust or paint residue allowed at pit bottoms)
SSPC-SP 15 - Answers Commercial grade power tool cleaning
-Remove tightly adherent mill scale, rust, paint, and other foreign matter
-can have trace amounts of coating and corrosion products in pits
-minimum surface profile shall be 1.0 mil, deeper if specified
SSPC-VIS 3 - Answers Guide & Reference Photographs for steel surface prepared by power and hand tool
cleaning
Includes: SSPC-SP 2 / SSPC-SP 3 / SSPC-SP 11 / SSPC-SP 15
ISO 8501-1 - Answers Preparation of Steel Substrates Before Application of Paints and Related Products
-Prior to hand and power tool cleaning, this standard states that any heavy layers of rust shall be
removed by chipping and that any visible oil, dirt, grease be removed
Includes: Sa 1 / Sa 2 / Sa 2 1/2 / Sa 3 / St 2 / St 3
ISO 8501-1 Sa 1 - Answers Light blast cleaning
-Relates to: NACE No. 4 / SSPC-SP 7
-When viewed without magnification, the surface shall be free of poorly adhering mill scale, rust, paint
coatings, and foreign matter
ISO 8501-1 Sa 2 - Answers Thorough blast cleaning
-Relates to: NACE No. 8 / SSPC-SP 14
-When viewed without magnification, the surface shall be free from MOST visible oil, grease, dirt, mill
scale, rust, paint coatings, and foreign matter
ISO 8501-1 Sa 2 1/2 - Answers Very thorough blast cleaning
-Relates to: NACE No. 2 / SSPC-SP 10
-When viewed without magnification, the surface shall be free from visible oil, grease, dirt, mill scale,
rust, paint coatings, and foreign matter