核设施.核工地和退役核设施限制系统的设计和操作标准

[中文适用范围]： 本文件规定了适用于机载封闭系统的设计和使用的要求，该系统确保核工作场所和退役核设施的安全和辐射防护功能，以防止产生的放射性污染：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作场所作业和退役核设施造成的放射性污染的扩散。 核工作场所和退役核设施的封闭的特点是所要进行的操作具有临时性和不断变化的（动态）性质。 这些操作通常发生在并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作场所的维护或升级。 注：其他 ISO 标准中制定了核反应堆或除核工作场所和退役核设施以外的核设施中通风和密闭系统以及液体密闭的设计和使用要求。 [外文原描述]： 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.