ANSI-NACE MR0175-ISO 15156-1-2-3:2015 Materials for use in H2S-containing environments in oil and gas production

Publisher: NACE International
Publish Date: 2015
Pages: 164
Language: English
Format: PDFDocument ScopeThis part of ANSI/NACE MR0175/ISO 15156 describes general principles and gives requirements and
recommendations for the selection and qualification of metallic materials for service in equipment used
in oil and gas production and in natural-gas sweetening plants in H2S-containing environments, where
the failure of such equipment can pose a risk to the health and safety of the public and personnel or to
the environment. It can be applied to help to avoid costly corrosion damage to the equipment itself. It
supplements, but does not replace, the materials requirements given in the appropriate design codes,
standards, or regulations.
This part of ANSI/NACE MR0175/ISO 15156 addresses all mechanisms of cracking that can be caused
by H2S, including sulfide stress cracking, stress corrosion cracking, hydrogen-induced cracking and
stepwise cracking, stress-oriented hydrogen-induced cracking, soft zone cracking, and galvanically
induced hydrogen stress cracking.
Table 1 provides a non-exhaustive list of equipment to which this part of ANSI/NACE
MR0175/ISO 15156 is applicable, including permitted exclusions.
This part of ANSI/NACE MR0175/ISO 15156 applies to the qualification and selection of materials for
equipment designed and constructed using load controlled design methods. For design utilizing strainbased
design methods, see Clause 5.
This part of ANSI/NACE MR0175/ISO 15156 is not necessarily applicable to equipment used in refining
or downstream processes and equipment.