气瓶.球阀.规范和试验

[中文适用范围]： 本文件规定了下列球阀的设计、型式试验、标记、制造试验和检验要求：a)可再充装可运输气瓶、压力桶和管道的封闭装置；b)气瓶组的主阀；c)货物运输单元[例如拖车、电瓶车、多元气体容器（MEGC）]的阀门；用于输送压缩气体、液化气体和溶解气体。注1：本文件中的“阀门”一词是指“球阀”。本文件不适用于以下球阀：——ISO 10156中定义的氧化气体；——有毒气体（即ISO 10298中列出的LC50值≤5000 ppm1)的气体）；——单个气瓶、压力桶和管道的乙炔。注 2：排除氧化气体的原因在于，使用球阀作为氧化气体高压气瓶的封闭装置会导致特定的着火危险，而这种危险无法通过球阀的设计或型式试验合理地减轻。安全隐患既涉及球阀本身，也涉及任何下游设备。 注 3：排除单气瓶、压力桶和管道中的乙炔的原因在于，乙炔分解的风险无法通过球阀的设计或型式试验合理地减轻。本文件不适用于液化石油气 (LPG)、低温设备、便携式灭火器和呼吸设备气瓶的球阀。 注 4：低温容器阀门的要求在 ISO 21011 中规定。 注 5：除了本文件给出的要求之外，ISO 16003 还规定了固定灭火系统快速释放阀的某些特殊要求。 [外文原描述]： This document specifies design, type testing, marking, manufacturing tests and examinations requirements for ball valves used as: closures of refillable transportable gas cylinders, pressure drums and tubes; main valves for cylinder bundles; valves for cargo transport units [e.g. trailers, battery vehicles, multi-element gas containers (MEGCs)]; which convey compressed gases, liquefied gases and dissolved gases. NOTE 1 In this document, the term “valve” is used with the meaning of “ball valve”. This document does not apply to ball valves for: oxidizing gases as defined in ISO 10156; toxic gases (i.e. gases listed in ISO 10298 having an LC 50 value ≤ 5 000 ppm acetylene for single gas cylinders, pressure drums and tubes. NOTE 2 The reason for the exclusion of oxidizing gases is that the use of ball valves as closures of high-pressure cylinders for oxidizing gases is known to lead to specific ignition hazards that cannot reasonably be mitigated through the ball valve design or type testing. Safety hazards concern both the ball valve itself and any downstream equipment. NOTE 3 The reason for the exclusion of acetylene for single gas cylinders, pressure drums and tubes is that the risk of an acetylene decomposition cannot reasonably be mitigated through the ball valve design or type testing. This document does not apply to ball valves for liquefied petroleum gas (LPG), cryogenic equipment, portable fire extinguishers and cylinders for breathing apparatus. NOTE 4 Requirements for valves for cryogenic vessels are specified in ISO 21011. NOTE 5 Certain specific requirements for quick-release valves for fixed fire-fighting systems in addition to those that are given in this document are specified in ISO 16003.