BS IEC 61508-1 : 1998 AMD 13779
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 - GENERAL REQUIREMENTS
03-15-2002
11-23-2012
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Conformance to this standard
5 Documentation
5.1 Objectives
5.2 Requirements
6 Management of functional safety
6.1 Objectives
6.2 Requirements
7 Overall lifecycle requirements
7.1 General
7.2 Concept
7.3 Overall scope definition
7.4 Hazard and risk analysis
7.5 Overall safety requirements
7.6 Safety requirements allocation
7.7 Overall operation and maintenance planning
7.8 Overall safety validation planning
7.9 Overall installation and commissioning planning
7.10 Realisation: E/E/PES
7.11 Realisation: other technology
7.12 Realisation: external risk reduction facilities
7.13 Overall installation and commissioning
7.14 Overall safety validation
7.15 Overall operation, maintenance and repair
7.16 Overall modification and retrofit
7.17 Decommissioning or disposal
7.18 Verification
8 Functional safety assessment
8.1 Objective
8.2 Requirements
Annexes
Annex A (informative) Example of documentation structure
A.1 General
A.2 Safety lifecycle document structure
A.3 Physical document structure
A.4 List of documents
Annex B (informative) Competence of persons
B.1 Objective
B.2 General considerations
Annex C (informative) Bibliography
Tables
1 Overall safety lifecycle: overview
2 Safety integrity levels: target failure measures for a
safety function, allocated to an E/E/PE safety-related
system operating in low demand mode of operation
3 Safety integrity levels: target failure measures for a
safety function, allocated to an E/E/PE safety-related
system operating in high demand or continuous mode of
operation
4 Minimum levels of independence of those carrying out
functional safety assessment (overall safety lifecycle
phases 1 to 8 and 12 to 16 inclusive (see figure 2))
5 Minimum levels of independence of those carrying out
functional safety assessment (overall safety lifecycle
phase 9 - includes all phases of E/E/PES and software
safety lifecycles (see figures 2, 3 and 4))
A.1 Example documentation structure for information related
to the overall safety lifecycle
A.2 Example documentation structure for information related
to the E/E/PES safety lifecycle
A.3 Example documentation structure for information related
to the software safety lifecycle
Figures
1 Overall framework of this standard
2 Overall safety lifecycle
3 E/E/PES safety lifecycle (in realisation phase)
4 Software safety lifecycle (in realisation phase)
5 Relationship of overall safety lifecycle to E/E/PES and
software safety lifecycles
6 Allocation of safety requirements to the E/E/PE safety-
related systems, other technology safety-related systems
and external risk reduction facilities
7 Example operations and maintenance activities model
8 Example operation and maintenance management model
9 Example modification procedure model
A.1 Structuring information into document sets for user
groups
A.2 Structuring information for large complex systems and
small low complexity systems
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