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."
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
: It specifically covers acid strengths between 90% and 100% by weight. The keyword refers to a critical industrial standard
: A specific localized attack mentioned in the standard is "hydrogen grooving," caused by the movement of hydrogen bubbles along vertical walls, which prevents the stable formation of the protective film. 3. Key Design and Maintenance Requirements Scope and Objective : Specifically covers the design,
This standard, last majorly revised as NACE Standard RP0391-2001 and later redesignated as , provides essential guidelines for engineers and maintenance personnel in the chemical processing industry to prevent catastrophic failures and manage the extreme corrosivity of concentrated sulfuric acid. 1. Scope and Objective
: Specifically covers the design, fabrication, and inspection of sulfuric acid storage tanks.
Intertek Inform : Provides historical and current versions of the standard. ANSI Webstorehttps://webstore.ansi.org NACE Standard RP0391-2001 - ANSI Webstore