本标准定义了对系统/产品进行工程设计或再工程的系统方法，并结合了近年来有很大发展的最佳实践。本标准的系统方法适用于:完成纠正措施、进行改进、开发衍生产品、进行修改、更新现有产品、创建和实现新系统，允许安全且经济高效地处置（报废）系统/产品。这种方法逐渐应用于工程生命周期框架中，可以在企业的任何一个或多个阶段实施- 基于生命周期（例如，在生产、运营、支持或处置期间）。定义的方法有两个前提:一个系统/产品可能包括硬件、软件、固件、设施、数据、材料、人员、服务、技术和过程。系统/产品的工程设计是通过一个多功能团队将一组过程应用于其层次结构的每个元素来完成的，该团队由具备必要知识和技能的人员组成。

This standard defines a systematic approach to engineering or reengineering a system/product, incorporating best practices that have evolved considerably in recent years. The systematic approach of this standard is applicable for:Completing corrective actions,Making refinements,Developing derivatives,Producing modifications,Updating existing products,Creating and realizing new systems,Allowing for the safe and cost-effective disposal (retirement) of a system/product.This approach is incrementally applied in an engineering life cycle framework that can be implemented during any one or more phases of an enterprise-based life cycle (for example, during production, operations, support, or disposal). The defined approach has two premises:A system/product is an item that may consist of hardware, software, firmware, facilities, data, materials, personnel, services, techniques, and processes.The engineering of a system/product is accomplished by applying a set of processes to each element of its hierarchy by a multifunctional team of people who have the requisite knowledge and skills.