气瓶.阀门的检查和维护

[中文适用范围]： 本文件规定了下列阀门[包括球阀和集成压力调节器的阀门（VIPR）]的检验和维护要求：a)可再充装运输气瓶；b)气瓶组；c)压力桶和管道；用于输送压缩、液化或溶解气体。本文件不适用于液化石油气（LPG）阀门。注：若无歧义，本文件中将气瓶、气瓶组、压力桶和管道统称为“气瓶”。本文件适用于在气瓶、气瓶组、压力桶和管道定期检验时重复使用的阀门，也可在任何其他时间应用，例如在更换气体服务时（参见 ISO 11621）。本文件不适用于阀门的例行检验，例如在气瓶充装时进行的检验。 [外文原描述]： This document specifies requirements for the inspection and maintenance of valves [including ball valves and valves with integrated pressure regulator (VIPRs)] for: a) refillable transportable gas cylinders; b) cylinder bundles; c) pressure drums and tubes; which convey compressed, liquefied or dissolved gases. This document does not apply to valves for liquefied petroleum gas (LPG). NOTE Where there is no risk of ambiguity, gas cylinders, cylinder bundles, pressure drums and tubes are addressed with the collective term “gas cylinders” within this document. This document is applicable to valves reused at the time of the periodic inspection of gas cylinders, cylinder bundles, pressure drums and tubes, and can be applied at any other time, e.g. at a change of gas service (see ISO 11621). This document does not apply to the routine inspection of valves, e.g. carried out at the time of a gas cylinder filling.