文档介绍：Integrating Safety Information into the System Engineering Process
Nancy G. Leveson, .; Massachusetts Institute of Technology, Cambridge, MA
Abstract
One of the most important jobs of the system safety engineer is to document safety-related information in such a way that it can be traced throughout system development. Such information must be in a form that can be used by system engineers when they are making critical decisions. Often, the system safety engineers are busy producing their own documentation while the system engineers are designing the system. By the time the system engineers get the information created by the system safety engineers, it is too late to have the impact on design decisions that are necessary to be most effective.
This paper describes a way to integrate basic system development with system safety engineering in such a way that information is available to designers when needed in the development process and in a form that can have a maximal impact on design and validation activities. Complete traceability of safety activities from high-level system requirements down to detailed design is another result of the approach. Traceability is critical for verification and validation of system safety as well as reanalyzing safety when changes are proposed or occur.
Introduction
The quality of the safety information system is one of the most important