The keyword refers to a critical industrial standard practice published by NACE International (now part of AMPP ) titled "Materials for the Handling and Storage of Commercial Concentrated (90 to 100%) Sulfuric Acid at Ambient Temperatures."
: Provides procedures for applying internal coating systems to railroad tank cars used for acid transport. 5. Accessing the NACE RP 0391 PDF
A significant portion of NACE RP 0391 focuses on the use of carbon steel, which is the most common material for concentrated sulfuric acid storage due to its cost-effectiveness and the formation of a protective . nace rp 0391 pdf
Intertek Inform : Provides historical and current versions of the standard. ANSI Webstorehttps://webstore.ansi.org NACE Standard RP0391-2001 - ANSI Webstore
: All weldments must be thoroughly inspected for defects like slag, porosity, or laps, as these can initiate rapid localized corrosion. The keyword refers to a critical industrial standard
: Because sulfuric acid is highly hygroscopic (it absorbs water from the air), storage systems must include desiccant dryers on vents to prevent the acid from diluting. Diluted acid (below 77%) is far more corrosive to carbon steel. 4. Comparison with Related Standards
While NACE RP 0391 focuses on , it is often used in conjunction with other standards: Intertek Inform : Provides historical and current versions
As this is a copyrighted technical document, it is not legally available for free download. Official copies can be purchased through authorized distributors:
: Specifically covers the design, fabrication, and inspection of sulfuric acid storage tanks.