Nace Rp0472 — Pdf

In wet H₂S environments, even "correct" carbon steel can fail catastrophically if the welding process introduces hard spots, excessive residual stress, or improper heat treatment. RP0472 provides the practical, step-by-step controls to mitigate these risks.

(These numbers are not set by NACE RP‑0472 itself; they are defined by the user’s specification, code, or contract.) nace rp0472 pdf

| Standard | Focus | |----------|-------| | NACE MR0175/ISO 15156 | Materials for sour service | | NACE SP0102 | In-service inspection of refinery equipment | | API 571 | Damage mechanisms in refineries | | API 582 | Welding guidelines for corrosive service | | ASME B31.3 (Appendix W) | Welding for severe cyclic/corrosive service | In wet H₂S environments, even "correct" carbon steel