scope:

Gives requirements and recommendations for the selection and qualification of CRAs (corrosion-resistant alloys) and other alloys for service in equipment, used in oil and gas production and natural gas sweetening plants in H2S containing environments, whose failure could 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 of the appropriate design codes, standards or regulations. It addresses the resistance of these materials to damage that may be caused by sulfide stress cracking (SSC), stress corrosion cracking (SCC) and galvanically induced hydrogen stress cracking (GHSC). Is only concerned with cracking. Loss of material by general (weight loss) or localised corrosion is not addressed. Table 1 lists equipment that is within the scope but the scope is not limited to that listed. Table 1 also lists equipment that may be excluded from the scope under the stated circumstances. Applies to the qualification and selection of materials for equipment designed and constructed using conventional elastic design criteria.