BS IEC 61508-5 : 98 AMD 13783
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
FUNCTIONAL SAFETY OF ELECTRICAL/ELECTRONIC/PROGRAMMABLE ELECTRONIC SAFETY-RELATED SYSTEMS - EXAMPLES OF METHODS FOR THE DETERMINATION OF SAFETY INTEGRITY LEVELS
15-03-2002
23-11-2012
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions and abbreviations
Annexes
A Risk and safety integrity - general concepts
B ALARP and tolerable risk concepts
C Determination of safety integrity levels: a quantitative
method
D Determination of safety integrity levels - A qualitative
method: fisk graph
E Determination of safety integrity levels - A qualitative
method: hazardous event severity matrix
F Bibliography
Figures
1 Overall framework of this standard
A.1 Risk reduction: general concepts
A.2 Risk and safety integrity concepts
A.3 Allocation of safety requirements to the E/E/PE
safety-related systems, other technology
safety-related systems and external risk reduction
facilities
B.1 Tolerable risk and ALARP
C.1 Safety integrity allocation: example for safety-
related protection system
D.1 Risk graph: general scheme
D.2 Risk graph: example (illustrates general principles
only)
E.1 Hazardous event severity matrix: example
(illustrates general principles only)
Tables
B.1 Risk classification of accidents
B.2 Interpretation of risk classes
D.1 Example data relating to example risk graph (figure D.2)
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