IEC 62425:2007

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
4 Overall framework of this standard
5 Conditions for safety acceptance and approval
  5.1 The safety case
  5.2 Evidence of quality management
  5.3 Evidence of safety management
      5.3.1 Introduction
      5.3.2 Safety life-cycle
      5.3.3 Safety organisation
      5.3.4 Safety plan
      5.3.5 Hazard log
      5.3.6 Safety requirements specification
      5.3.7 System/sub-system/equipment design
      5.3.8 Safety reviews
      5.3.9 Safety verification and validation
      5.3.10 Safety justification
      5.3.11 System/sub-system/equipment handover
      5.3.12 Operation and maintenance
      5.3.13 Decommissioning and disposal
  5.4 Evidence of functional and technical safety
  5.5 Safety acceptance and approval
      5.5.1 Introduction
      5.5.2 Safety approval process
      5.5.3 After safety approval
      5.5.4 Dependency between safety approvals
Annex A (normative) Safety integrity levels
Annex B (normative) Detailed technical requirements
Annex C (normative) Identification of hardware component
                    failure modes
Annex D (informative) Supplementary technical information
Annex E (informative) Techniques and measures for
                      safety-related electronic systems for
                      signalling for the avoidance of
                      systematic faults and the control of
                      random and systematic faults
Bibliography

Applies to all safety-related railway signalling systems/sub-system/equipment. The hazard analysis and risk assessment processes defined in IEC 62278 and this standard are necessary for all railway signalling systems/sub-systems/equipment, in order to identify any safety requirements.