Equipment has been exposed to sulfide scales at high temperatures. Sensitized material is suspected or confirmed. 3. Key Mitigation Methods Recommended by SP0170
On January 1, 2021, to form the Association for Materials Protection and Performance (AMPP) . Consequently, you may see this document referenced as AMPP SP0170 in the future. However, the technical content of the most current standard (SP0170-2018) has not been superceded by any 2021 version. nace sp0170 pdf 2021
When utilizing an alkaline wash, use chloride-free or low-chloride water. High-chloride water can inadvertently trigger Chloride Stress Corrosion Cracking (Cl-SCC). Equipment has been exposed to sulfide scales at
The chemical hazard activates when three distinct conditions converge during a refinery shutdown: Key Mitigation Methods Recommended by SP0170 On January
Spraying surfaces with a neutralizing solution (like soda ash) to "kill" any acid the moment it touches the metal.
The system must remain pressurized under nitrogen for the entire shutdown. This strategy is perfect for units that do not require internal inspections or catalyst changes. 2. Alkaline Chemical Washing (Neutralization)