本指南旨在促进飞机和地面支援氧气系统的安全设计、操作和维护。这也是ASTM G 4委员会有关氧气火灾调查和设计问题的一些工作总结，以降低氧气火灾的风险。有许多最新的技术进步和额外的测试数据可用于评估和控制氧气设备中的燃烧危害。使用这些新信息的标准正在迅速发展。需要一份指南来帮助不完全熟悉该过程的组织和人员提供燃烧风险最小的氧气系统。本指南不一定解决所有详细问题，也不一定提供所需的所有数据。 对于完整的分析，需要参考补充出版物。本指南确实讨论了氧气系统火灾危险的基本知识。本文讨论了危害分析过程，并用一个简单的例子来解释这一过程。此外，本指南不涉及通常在飞机项目中评估的总体系统安全问题。本指南确实提供了一些有关氧气系统中燃烧的重要背景和观察结果。给出了描述如何完成危险分析的信息。此外，还提供了背景资料，以解释氧气系统中需要评估的关键位置以及不需要进行危险分析的其他位置。需要注意的是，任何需要进行全面有效的危害分析的工作都应使用本文引用的文件中的完整信息。 一般来说，危险分析的需要主要适用于50 psi及更高压力下的气态氧设备。液氧设备也存在危险问题，通常在500 psi下与GOX设备进行类似处理。应该注意的是，必须考虑与液氧设备相关的其他现象。例如，液氧可以与碳氢化合物结合形成凝胶，在撞击下爆炸。另一方面，由于液氧是一种非常冷的液体，它往往会熄灭最可能导致促进点火的点火源。当在较低压力下检查氧气设备时，主要问题是可燃性不可燃气体的点火和着火问题增加- 金属。

This guide is intended to promote safe designs, operations and maintenance on aircraft and ground support oxygen systems. This is also a summary of some work by the ASTM G 4 Committee related to oxygen fire investigations and design concerns to reduce the risk of an oxygen fire. There have been many recent technological advances and additional test data is available for evaluating and controlling combustion hazards in oxygen equipment. Standards that use this new information are rapidly evolving. A guide is needed to assist organizations and persons not completely familiar with this process to provide oxygen systems with minimum risks of combustion. This guide does not necessarily address all the detailed issues and provide all data that will be needed. For a complete analysis, supplemental publications need to be consulted. This guide does discuss the basics of oxygen systems fire hazards. The hazard analysis process is discussed and a simple example to explain this process. Also, this guide does not address the overall system safety issues normally evaluated in aircraft programs. This guide does provide some important background and observations about combustion in oxygen systems. Information is given describing how to accomplish a hazard analysis. Furthermore, background is provided to explain critical locations in oxygen systems that need to be evaluated and other locations that do not require hazard analysis.It is important to note that any effort that requires a comprehensive and effective hazard analysis should use the complete information in the documents referenced herein. In general, the need for a hazard analysis applies primarily to gaseous oxygen equipment at 50 psi and higher pressures. LOX equipment does have hazards concerns as well and is usually treated similarly to GOX equipment at 500 psi. It should be noted that there are other phenomena associated with LOX equipment that must be considered. An example is that LOX can combine with hydrocarbons to form a gel, which explodes under impact. On the other hand, since LOX is a very cold liquid it tends to quench most possible ignition sources that could cause promoted ignition. When examining oxygen equipment at lower pressures the primary concern is the increased ignition and fire concern with combustible non-metals.