NACE RP 0391 bridges this gap. It provides the methodology to ensure that the lining selected is not only chemically compatible with the process but also mechanically robust enough to withstand the friction and impact of particulate matter.
Storage tanks must be properly vented or equipped with desiccants to prevent the acid from absorbing atmospheric moisture. Related Standards
The document (re-designated as AMPP SP0391 ) is the industry standard for the design and selection of materials for handling and storing commercial concentrated sulfuric acid ( H2SO4cap H sub 2 cap S cap O sub 4 ) at ambient temperatures. nace rp 0391 pdf
While many NACE standards focus solely on chemical resistance (like RP 0188), RP 0391 addresses the specific niche of . It serves as a comprehensive guide for selecting, specifying, and applying organic linings designed to protect concrete and steel substrates from wear and tear.
: Suggests venting or desiccant systems for storage tanks to prevent atmospheric moisture from diluting the acid and causing "vapor space corrosion". 3. Output & Risk Alerts NACE RP 0391 bridges this gap
As temperatures rise, the corrosion rate of carbon steel in concentrated acid increases exponentially. The document outlines the "isocorrosion charts" that help engineers determine the maximum allowable temperature before a more noble material or a protective lining is required. 3. Tank Design and Maintenance Storage tanks are a primary focus. The practice details:
: You can buy the authorized digital version through the AMPP Store or the Accuris Standards Store. Related Standards The document (re-designated as AMPP SP0391
Note: Downloading unauthorized or "free" PDFs from file-sharing websites poses significant risks, including outdated information, missing addenda, and corporate compliance violations. Conclusion
If you are dealing with a specific material issue, let me know: Are you dealing with sulfuric acid concentration below 90%?