NFPA发布的代码和标准在NFPA的许可下显示为只读，仅供本系统使用。NFPA材料不得下载、打印、复制或转让。通过最新版NFPA 53《富氧大气中使用的材料、设备和系统的推荐规程》，提高富氧大气（OEA）中的安全性。NFPA 53《富氧大气中使用的材料、设备和系统的推荐实施规程》由行业专家创建，旨在帮助确保用户获得安全使用氧气（液体/气体）和OEA中使用的系统设计所需的重要信息。医疗保健、工业和消防领域的设计师、工程师和设施经理使用此推荐做法，以便更容易地选择可在此类环境中安全使用的材料和组件。 NFPA 53适用于以下情况:气体和压缩空气供应医疗应用，包括家庭氧气系统、航天操作、工业过程、焊接应用、自给式呼吸器（SCBA）、自备式水下呼吸器（水下呼吸器）、水下隧道和沉箱作业、商业和军用航空，在NFPA 2021版的第53版中作出了重要的区别，以确保OEAs的安全。在本版本中，提供了附件材料，以解释不同标准和组织之间OEA阈值的差异。进行了修订，以帮助确保SI/US单位转换在整个推荐实践中可用且准确。用2021版NFPA 53来保护生命，并了解OEA的安全性，在富氧环境中使用的材料、设备和系统的推荐实践。（印刷版，第68页，2021年）

Codes and standards published by NFPA are displayed as read-only under license from NFPA solely for use within this system.  NFPA material may not be downloaded, printed, reproduced, or transferred.Improve safety in oxygen-enriched atmospheres (OEAs) with the latest edition of NFPA 53,Recommended Practice on Materials, Equipment, and Systems Used in Oxygen-Enriched Atmospheres.NFPA 53,Recommended Practice on Materials, Equipment, and Systems Used in Oxygen-Enriched Atmospheres,was created by industry experts to help ensure users have the vital information they need for the safe use of oxygen (liquid/gaseous) and the design of systems for use in OEAs. Designers, engineers, and facility managers in the health care, industrial, and fire service fields use this recommended practice to make it easier to select materials and components that can be used safely in these types of environments.NFPA 53 applies to the following:Gas and compressed air suppliesMedical applications, including home oxygen systemsSpaceflight operationsIndustrial processesWelding applicationsSelf-contained breathing apparatus (SCBA)Self-contained underwater breathing apparatus (SCUBA)Underwater tunneling and caisson workCommercial and military aviationImportant distinctions were made in the 2021 edition of NFPA 53 to ensure safety in OEAs.In this edition, annex material was provided to explain the differences in OEA thresholds between various standards and organizations. Revisions were made to help ensure SI/US unit conversions are available and accurate throughout the recommend practice.Help protect lives and stay informed about OEA safety with the 2021 edition of NFPA 53,Recommended Practice on Materials, Equipment, and Systems Used in Oxygen-Enriched Atmospheres.(Print, 68 pp., 2021)