Material requirements for resistance to sulfide stress cracking (SSC) in sour refinery process environments (i.e., environments that contain wet hydrogen sulfide [H2S]). AKA "wet H2S cracking".
CORRECTION OF PUBLICATION:
In January 2016, NACE published an incorrect version of ANSI/NACE MR0103/ISO 17945:2015 (Petroleum, petrochemical and natural gas industries — Metallic materials resistant to sulfide stress cracking in corrosive petroleum refining environments). That document was incorrectly titled ANSI/NACE MR0103/ISO 17495:2016. The erroneous standard was retracted at the time and the NACE Store has the corrected version. NOTE: The contents of both versions of the standard are identical. The only discrepancies are in the title.
NOTE: We are in the process of back adopting the ISO 15156:2020 edition to become the ANSI/NACE MR0175 standard. We will advise when the new version is available for purchase.
DOWNLOADABLE 2015 EDITION.
Selection and qualification of carbon and low-alloy steels, corrosion-resistant alloys, and other alloys for service in equipment in oil and natural gas production and NG treatment plants in H2S-containing
This NACE Standard establishes material requirements for resistance to sulfide stress cracking (SSC) in sour refinery process environments, i.e., environments that contain wet hydrogen sulfide (H2S). It is intended to be used by refineries, equipment manufacturers, engineering contractors, and construction contractors.
Corrosion can be a costly and annoying concern in a building's potable water
The forms of corrosion that can occur include:
1) General Corrosion
2) Pitting Attack
3) Concentration Cell Corrosion
5) Erosion Corrosion
6) Galvanic Corrosion
These corrosion forms can be avoided by a number of techniques including materials selection, system design and chemical treatment of the water.
Coatings, sometimes in conjunction with cathodic protection, have been used to mitigate the corrosion of storage tanks in building systems, but are not addressed in this paper.