本文根据国际标准IEC- 61508的指导意见，通过几种常用方法的比较，确定了利用系统模型的定量风险来确定所需安全仪表系统完整性等级。
On the basis of IEC-61508 directive suggestion, this thesis compares several general methods and comes into a result: assignment of SIL by system model's risk.
介绍了石化行业安全仪表系统及其安全完整性等级确定方法，并对方法的应用范围进行了说明。
This paper introduces the safety instrument system and method of its safety level integrity of petrochemical industry, and discusses application scope of this method.
总结了系统功能安全测试的关键技术，包括基于功能安全的安全标准体系、安全完整性等级、整体安全生命周期。
Key technologies of system functional safety test are summarized. These include safety standard architecture, integrated safety level and integrated safety lifecycle.
在生态系统完整性原则下，定义系统、系统边界、系统等级和认识生态系统的尺度。
Under this principle, we defined the system, the boundary of the system and the organizational Ievels of the system, and also defined the scale at which the ecosystem was to be examined.
在生态系统完整性原则下，定义系统、系统边界、系统等级和认识生态系统的尺度。
Under this principle, we defined the system, the boundary of the system and the organizational Ievels of the system, and also defined the scale at which the ecosystem was to be examined.
应用推荐