ISO 16852:2016规定了当存在爆炸性气体-空气或蒸汽-空气混合物时防止火焰传播的阻火器的要求。它为分类、基本结构和使用信息（包括阻火器的标记）确立了统一原则，并规定了验证安全要求和确定安全使用极限的试验方法。 本国际标准适用于80 kPa至160 kPa的压力和-20°C至+150°C的温度。 注1:对于工作条件在范围内但在大气条件外的阻火器，见7。 4. 注2:在设计和测试除上述条件外的其他条件下运行的阻火器时，本国际标准可作为指南。然而，建议进行与预期使用条件相关的额外测试。当施加高温和高压时，这一点尤为重要。在这些情况下，可能需要对试验混合物进行修改。 注3:附加标准IMO MSC/Circ。677国际海事组织海事申请存在。 ISO 16852:2016不适用于以下情况: -可能需要外部安全相关的测量和控制设备，以将操作条件保持在既定的安全限制范围内； 注4:集成测量和控制设备，如集成温度和火焰传感器，以及有意熔化（固定销）、烧坏（防风雨罩）或弯曲（双金属条）的零件，均在本国际标准的范围内。 -用于蒸汽和气体的爆炸性混合物的阻火器，其倾向于自分解（例如乙炔）或化学性质不稳定； -用于二硫化碳的阻火器，由于其特殊性能； -灭火器，其预期用途为气体-空气或蒸汽-空气混合物以外的混合物（例如较高的氧氮比、作为氧化剂的氯等）； -内燃机压燃式发动机阻火器试验程序； -快速作用阀门、灭火系统和其他隔爆系统。

ISO 16852:2016 specifies the requirements for flame arresters that prevent flame transmission when explosive gas-air or vapour-air mixtures are present. It establishes uniform principles for the classification, basic construction and information for use, including the marking of flame arresters, and specifies test methods to verify the safety requirements and determine safe limits of use. This International Standard is valid for pressures ranging from 80 kPa to 160 kPa and temperatures ranging from？20 °C to + 150 °C. NOTE 1 For flame arresters with operational conditions inside the scope, but outside atmospheric conditions, see 7.4. NOTE 2 In designing and testing flame arresters for operation under conditions other than those specified above, this International Standard can be used as a guide. However, additional testing related specifically to the intended conditions of use is advisable. This is particularly important when high temperatures and pressures are applied. The test mixtures might need to be modified in these cases. NOTE 3 An additional standard IMO MSC/Circ. 677 for maritime application from IMO (International Maritime Organization) exists. ISO 16852:2016 is not applicable to the following: - external safety-related measurement and control equipment that might be required to keep the operational conditions within the established safe limits; NOTE 4 Integrated measurement and control equipment, such as integrated temperature and flame sensors as well as parts which, for example, intentionally melt (retaining pin), burn away (weather hoods) or bend (bimetallic strips), is within the scope of this International Standard. - flame arresters used for explosive mixtures of vapours and gases, which tend to self-decompose (e.g. acetylene) or which are chemically unstable; - flame arresters used for carbon disulphide, due to its special properties; - flame arresters whose intended use is for mixtures other than gas-air or vapour-air mixtures (e.g. higher oxygen-nitrogen ratio, chlorine as oxidant, etc.); - flame arrester test procedures for internal-combustion compression ignition engines; - fast acting valves, extinguishing systems and other explosion isolating systems.