Nace Rp 0391 Pdf

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

NACE RP 0391 (Revised as NACE SP0391, now AMPP SP0391) stands for: "Standard Practice—Materials, Fabrication, and Handling of Fiberglass-Reinforced Plastic (FRP) Pipelines for Onshore Corrosive Service."

Originally published by NACE Task Group T-5A, this recommended practice was created to fill a critical gap: while FRP pipes are highly resistant to corrosion (unlike steel), they are vulnerable to improper handling, poor installation, and UV degradation. The standard provides a systematic methodology to ensure FRP pipelines achieve their intended 20–50 year design life. nace rp 0391 pdf

Even with a PDF in hand, engineers often make these costly errors:

The guide generally cautions against the use of standard stainless steels (like 304 or 316) for HF service. They can suffer from pitting and stress corrosion cracking in specific concentrations. One of the most valuable sections of RP0391

Since 2021, NACE International has merged with SSPC to form AMPP. The official document is now AMPP SP0391-2022 (the latest revision).

Carbon steel is the most common material for concentrated HF storage and piping. The guide explains the phenomenon of "passivation." Epoxy Liners (plural-component)