本国际标准规定了酸性石油精炼和相关加工环境中抗SSC的材料要求，这些环境中含有H2S（气体）或溶解在含或不含碳氢化合物的水相（液态水）中。本国际标准不包括也不打算包括设计规范。其他形式的湿H2S开裂、环境开裂、腐蚀和其他失效模式不在本国际标准的范围内。它旨在供炼油厂、设备制造商、工程承包商和施工承包商使用。具体而言，本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。 ASME锅炉及压力容器规范（BPVC）第九节P-1项下碳钢中SSC的预防要求符合NACE SP0472。本国际标准适用于暴露在酸性炼油厂环境中的所有设备部件（见第6条），其中SSC的故障将（1）损害压力容器系统的完整性，（2）阻止设备的基本功能，和/或（3）阻止设备在继续承压的同时恢复到运行状态。

This International Standard 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.This International Standard 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.