: 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
: When carbon steel contacts concentrated acid, it initially corrodes but quickly forms an insoluble sulfate layer that limits further attack. nace rp 0391 pdf
: It specifically covers acid strengths between 90% and 100% by weight. : A specific localized attack mentioned in the
ANSI Webstore : Offers preview pages and full PDF purchase for the 2001 version. : It specifically covers acid strengths between 90%
: Design must account for the continuous generation of hydrogen gas, which can be an explosion hazard if trapped.
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 .