NACE SP0170 is designed for times when sulfide-coated equipment is opened to the air.
NACE SP0170 does not exist in a vacuum. It is part of a comprehensive suite of standards addressing corrosion and cracking in refinery equipment. Professionals who use SP0170 often refer to: nace sp0170 pdf
If you are currently planning a turnaround or drafting a corporate engineering standard, I can help you expand on specific sections of this topic. NACE SP0170 is designed for times when sulfide-coated
Metal Sulfides+Oxygen (O2)+Liquid Water (H2O)⟶Polythionic Acid (H2SxO6)Metal Sulfides plus Oxygen open paren cap O sub 2 close paren plus Liquid Water open paren cap H sub 2 cap O close paren ⟶ Polythionic Acid open paren cap H sub 2 cap S sub x cap O sub 6 close paren Professionals who use SP0170 often refer to: If
Indirectly. New austenitic stainless steel that has never been in high-temperature service is not sensitized and does not require soda ash washing during its first shutdown. However, after the first service cycle above the sensitization range, SP0170 becomes applicable.