ISO 2919:2012建立了基于试验性能的密封放射源分类系统，并规定了一般要求、性能试验、生产试验、标记和认证。它提供了一系列测试，通过这些测试，密封放射源的制造商可以评估其使用产品的安全性，此类放射源的用户可以选择适用于所需应用的类型，尤其是在涉及防止放射性物质释放以及随后暴露于电离辐射的情况下。ISO 2919:2012也可以作为监管机构的指南。 这些测试分为几组，例如，暴露在异常高温和低温下，以及各种机械测试。每项测试都有不同程度的严重性。通过或不通过的标准取决于密封放射源内容物的泄漏。 尽管ISO 2919:2012通过各种测试对密封源进行了分类，但这并不意味着如果在额定分类下连续使用，密封源将保持其完整性。例如，如果在600°C下连续使用，在600°C下测试1小时的密封源可能会，也可能不会保持其完整性。 表3列出了密封放射源的主要典型应用，以及每种应用的建议试验计划。这些测试构成了与最广泛意义上的应用相对应的最低要求。4.2中列出了在特别恶劣条件下应用时需要考虑的因素。 ISO 2919:2012未尝试根据辐射源的设计、构造方法或校准进行分类。核反应堆内的放射性物质，包括密封源和燃料元件，不在ISO 2919的范围内: 2012.

ISO 2919:2012 establishes a classification system for sealed radioactive sources that is based on test performance and specifies general requirements, performance tests, production tests, marking and certification. It provides a set of tests by which manufacturers of sealed radioactive sources can evaluate the safety of their products in use and users of such sources can select types which are suitable for the required application, especially where protection against the release of radioactive material, with consequent exposure to ionizing radiation, is concerned. ISO 2919:2012 can also serve as guidance to regulating authorities. The tests fall into several groups, including, for example, exposure to abnormally high and low temperatures and a variety of mechanical tests. Each test can be applied in several degrees of severity. The criterion of pass or fail depends on leakage of the contents of the sealed radioactive source. Although ISO 2919:2012 classifies sealed sources by a variety of tests, it does not imply that a sealed source will maintain its integrity if used continuously at the rated classification. For example, a sealed source tested for 1 h at 600 °C might, or might not, maintain its integrity if used continuously at 600 °C. A list of the main typical applications of sealed radioactive sources, with a suggested test schedule for each application, is given in Table 3. The tests constitute minimum requirements corresponding to the applications in the broadest sense. Factors to be considered for applications in especially severe conditions are listed in 4.2. ISO 2919:2012 makes no attempt to classify the design of sources, their method of construction or their calibration in terms of the radiation emitted. Radioactive materials inside a nuclear reactor, including sealed sources and fuel elements, are not covered by ISO 2919:2012.