Nace Rp 0391 Pdf May 2026

Engineers often make the mistake of specifying a lining based solely on its chemical compatibility, assuming it will hold up against physical wear. However, a lining that resists acid perfectly might disintegrate in a matter of weeks if exposed to a high-velocity slurry containing sand or coal.

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.

If you possess the NACE RP0391 PDF, treat it as a historical reference or for maintaining legacy equipment. Do not use it for new construction.

NACE RP0391 (now updated to NACE SP0391 ) is a standard recommended practice titled

"Materials for the Handling and Storage of Commercial Concentrated Sulfuric Acid at Ambient Temperatures" nace rp 0391 pdf

. It is primarily used by engineers and maintenance personnel in the chemical process industries to select safe, cost-effective materials for systems handling sulfuric acid.

AMPP - The Association for Materials Protection and Performance Scope and Application Acid Concentration:

Covers commercial concentrated sulfuric acid in the range of 90% to 100% Temperature: Designed for ambient temperatures 50°C (120°F) , which accounts for solar heating in tropical climates. Excluded Media:

This standard does not apply to acid concentrations below 90% or temperatures exceeding 50°C. GlobalSpec Key Technical Guidance Material Selection: Engineers often make the mistake of specifying a

Provides guidance on using carbon steel, stainless steels, and various alloys. Corrosion Phenomena: Addresses specific risks like hydrogen grooving

in pipelines and tank walls, as well as the effects of flow velocity on iron-based alloys. Protective Measures: Discusses methods like anodic protection

for carbon steel to reduce corrosion and maintain acid purity. Linings and Coatings:

Includes information on high-temperature baked phenolic coatings and the use of plastics like PVC, PVDF, and polyethylene for specific concentrations. GlobalSpec Standard Evolution Original Issue: First prepared in 1991 as Major Revision: Revised in 2001 as RP0391-2001 Current Active Version: The standard was reaffirmed and renamed to SP0391-2016 NACE RP0391 (now updated to NACE SP0391 )

AMPP - The Association for Materials Protection and Performance Accessing the PDF Official copies are intellectual property of

(formerly NACE International). You can obtain the official document through these sources: AMPP Store The primary source for the active SP0391 standard. ANSI Webstore

Offers the RP0391-2001 version in electronic Adobe Acrobat PDF format. ANSI Webstore safety procedures mentioned in this standard?

Because the keyword "nace rp 0391 pdf" often leads to pirated or outdated versions, follow this legitimate path:

NACE International updates standards every 5 years to reflect new industry research, failure data, and safety regulations.

One of the most valuable sections of RP0391 is its analysis of how impurities affect corrosion: