本文件规定了适用于气载密闭系统设计和使用的要求，这些系统可确保核工地和退役核设施的安全和辐射防护功能，以防止产生放射性污染:气溶胶或气体。 隔离系统的目的是保护工人、公众和环境免受核工地操作和退役核设施造成的放射性污染扩散。 在退役状态下，对核工地和核设施的限制具有待执行操作的临时性和不断变化（动态）的特点。这些操作通常发生在非专门为此目的设计的区域。 本文件适用于符合上述定义的工地的维护或升级。 注:通风和限制系统的设计和使用，以及核反应堆或核设施（核工地和退役核设施除外）中液体限制的要求，均在其他ISO标准中制定。

This document specifies the requirements applicable to the design and use of airborne confinement systems that ensure safety and radioprotection functions in nuclear worksites and in nuclear installations under decommissioning to protect from radioactive contamination produced: aerosol or gas. The purpose of confinement systems is to protect the workers, members of the public and environment against the spread of radioactive contamination resulting from operations in nuclear worksites and from nuclear installations under decommissioning. The confinement of nuclear worksites and of nuclear installations under decommissioning is characterized by the temporary and evolving (dynamic) nature of the operations to be performed. These operations often take place in area not specifically designed for this purpose. This document applies to maintenance or upgrades at worksites which fit the above definition. NOTE The requirements for the design and use of ventilation and confinement systems and for liquid confinement in nuclear reactors or in nuclear installations other than nuclear worksites and nuclear installations under decommissioning are developed in other ISO standards.