ISO 21347:2005规定了断裂控制技术应用于由金属、非金属或复合材料制成的断裂临界件（FCI）的一般要求。它还为复合材料制造的机械损伤关键件（MDCI）制定了机械损伤控制要求。当在特定空间系统上实施这些要求时，可以确保实现安全运行和任务成功的高度信心。 ISO 21347:2005中规定的要求是一般空间系统（包括运载火箭和航天器）中FCI和MDCI的最低断裂控制和机械损伤控制要求。经过必要的修改，这些要求也可能适用于可重复使用的运载火箭（RLV）。ISO 21347:2005不适用于NASA航天飞机及其有效载荷或国际空间站及其设备，因为它们已经有一套适合其特殊应用的特定要求。 ISO 21347:2005不适用于处理检测到的缺陷。

ISO 21347:2005 establishes general requirements for the application of fracture control technology to fracture critical items (FCIs) fabricated by metallic, non-metallic or composite materials. It also establishes mechanical damage control requirements for mechanical damage critical items (MDCIs) fabricated by composite materials. These requirements, when implemented on a particular space system, may assure a high level of confidence in achieving safe operation and mission success. The requirements set forth in ISO 21347:2005 are the minimum fracture control and mechanical damage control requirements for FCIs and MDCIs in general space systems, including launch vehicles and spacecraft. With necessary modifications, these requirements may also be applicable to reusable launch vehicles (RLVs). ISO 21347:2005 is not applicable to the NASA Space Shuttle and its payloads or the International Space Station and its equipment since they already have a set of specific requirements suitable for their special applications. ISO 21347:2005 is not applicable in processing detected defects.