scope:

Gives requirements and recommendations for the selection and qualification of carbon and low alloy steels for service in equipment, used in oil and gas production and natural gas sweeting plants in H2S containing environments, whose failure could pose a risk to the health and safety of the public and personnel or the 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. Adresses the resistance of these steels to damage that may be caused by sulfide stress cracking (SSC) and the related phenomena of stress oriented hydrogen induced cracking (SOHIC) and soft zone cracking (SZC). Also addresses the resistance of these steels to hydrogen induced cracking (HIC) and its possible development into stepwise cracking (SWC).