Loss of safety assessment and the IEC 61508 standard

被引：41
|
作者：
Hokstad, P [1 ]
Corneliussen, J [1 ]
机构：
[1] SINTEF, Ind Management, Dept Safety & Reliabil, N-7465 Trondheim, Norway
来源：
RELIABILITY ENGINEERING & SYSTEM SAFETY | 2004年 / 83卷 / 01期
关键词：
IEC; 61508; safety unavailability; failure classification; common cause failures; multiple beta factor model; probability of failure on demand;
D O I：
10.1016/j.ress.2003.09.017
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The standard IEC 61508 contains a lot of useful information and guidance for safety improvement regarding the use of safety systems. However, some of the basic concepts and methods for loss of safety quantification are somewhat confusing. This paper discusses the failure classification, the various contributions to the safety unavailability, and in particular the common cause failure (CCF) model presented in this standard. Suggestions for clarifications and improvements are provided. In particular, a new CCF model is suggested, denoted the Multiple Beta Factor model. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：111 / 120
页数：10
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