基于典型冗余结构的安全仪表系统可靠性对比分析  

Comparative Analysis on Reliability of Safety Instrument System Based on Typical Redundant Structure

作　　者：李荣强[1] 姜巍巍[1] 曹德舜[1] 

机构地区：[1]中国石化安全工程研究院,山东青岛266071

出　　处：《安全、健康和环境》2015年第8期11-13,共3页Safety Health & Environment

摘　　要：安全仪表系统的冗余结构对安全仪表系统的可靠性影响较大,其通过两个重要指标进行衡量:要求时的平均失效概率和误停车率。采用简化方程式法,对比分析了4种典型冗余结构的可靠性,对于技术人员设计和改造安全仪表系统具有一定的指导作用。The redundant structure of the safety instru- ment system imposes great influences on reliability of safety instrument system, which are measured through two important indicators, like average failure proba- bility and error parking rate. Through simplified e- quation, the safety reliability and error parking of four kinds of typical redundant structures is com- pared, which thus plays a certain role in guiding the technical staffs in designing and transforming the safety instrument system.

关 键 词：安全仪表系统 冗余结构 平均失效概率 误停车率 

分 类 号：TE967[石油与天然气工程—石油机械设备]