本文件规定了气体灭火系统在以下方面的要求: HFC 125灭火剂。它包括物理特性、规格、使用和安全方面的详细信息。 本文件适用于标称压力为25巴和42巴的系统， 用氮气进行超高压处理。这并不排除使用其他系统。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies requirements for gaseous fire-extinguishing systems, with respect to the HFC 125 extinguishant. It includes details of physical properties, specification, usage and safety aspects. This document is applicable for systems operating at nominal pressures of 25 bar and 42 bar, superpressurized with nitrogen. This does not preclude the use of other systems.All current amendments available at time of purchase are included with the purchase of this document.