石油、石化和天然气工业.在腐蚀性石油精炼环境中抗硫化物应力开裂的金属材料

[中文适用范围]： 本国际标准规定了在含气或溶解在水（液态水）相中（无论是否存在碳氢化合物）的酸性石油精炼和相关加工环境中抗 SSC 的材料要求。 本国际标准不包括也无意包括设计规范。 其他形式的湿硫化氢裂纹、环境裂纹、腐蚀和其他失效模式不属于本国际标准的范围。 它旨在供炼油厂、设备制造商、工程承包商和建筑承包商使用。 具体来说，该国际标准旨在防止炼油行业使用的设备（包括压力容器、热交换器、管道、阀体、泵和压缩机壳体）和部件发生SSC。 预防 P-No. 下碳钢中的 SSC。 ASME 锅炉和压力容器规范 (BPVC) 第 IX 节中的第 1 条通过要求遵守 NACE SP0472 来解决。 本国际标准适用于暴露于酸性炼油厂环境（见第 6 条）的设备的所有组件，其中 SSC 故障将 (1) 损害压力安全壳系统的完整性，(2) 妨碍设备的基本功能，和/ (3) 防止设备在继续保压的情况下恢复到运行状态。 [外文原描述]： ISO 17945:2015 establishes material requirements for resistance to SSC in sour petroleum refining and related processing environments containing H2S either as a gas or dissolved in an aqueous (liquid water) phase with or without the presence of hydrocarbon. This International Standard does not include and is not intended to include design specifications. Other forms of wet H2S cracking, environmental cracking, corrosion, and other modes of failure are outside the scope of this International Standard. It is intended to be used by refiners, equipment manufacturers, engineering contractors, and construction contractors. Specifically, this International Standard is directed at the prevention of SSC of equipment (including pressure vessels, heat exchangers, piping, valve bodies, and pump and compressor cases) and components used in the refining industry. Prevention of SSC in carbon steel categorized under P-No. 1 in Section IX of the ASME Boiler and Pressure Vessel Code (BPVC) is addressed by requiring compliance with NACE SP0472. ISO 17945:2015 applies to all components of equipment exposed to sour refinery environments (see Clause 6) where failure by SSC would (1) compromise the integrity of the pressure-containment system, (2) prevent the basic function of the equipment, and/or (3) prevent the equipment from being restored to an operating condition while continuing to contain pressure.