CEI CLC/TR 50451 : 2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
RAILWAY APPLICATIONS - SYSTEMATIC ALLOCATION OF SAFETY INTEGRITY REQUIREMENTS
Hardcopy , PDF
English
01-01-2008
22-07-2025
Executive summary
Introduction
1 Scope
2 References
3 Definitions
4 Symbols and abbreviations
5 Safety Integrity Levels allocation framework
6 System definition
7 Hazard identification
8 Risk analysis
9 System design analysis
Annex A - Single-line signalling system example
Annex B - Level crossing example
Annex C - Comparison of demand and continuous mode
Annex D - Frequently asked questions
Specifies a method to determine the required Safety Integrity Level of railway signalling equipment taking in consideration: - the operational conditions of the railway, and - the architecture of the signalling system.
| Committee |
CT 9
|
| DevelopmentNote |
Classificazione CEI 9-106. Supersedes CEI R009-004. (02/2008)
|
| DocumentType |
Standard
|
| Pages |
90
|
| PublisherName |
Comitato Elettrotecnico Italiano
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| CLC/TR 50451:2007 | Identical |
| ISO/IEC 15026:1998 | Information technology — System and software integrity levels |
| R009-001 : 1997 | RAILWAY APPLICATIONS COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS HAZARDOUS FAILURE RATES AND SAFETY INTEGRITY LEVELS (SIL) |
| EN 50128:2011/AC:2014 | RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SOFTWARE FOR RAILWAY CONTROL AND PROTECTION SYSTEMS |
| ISA 84.01 : 1996 | APPLICATION OF SAFETY INSTRUMENTED SYSTEMS FOR THE PROCESS INDUSTRIES |
| DEFSTAN 00-56(PT1)/7(2017) : 2017 | SAFETY MANAGEMENT REQUIREMENTS FOR DEFENCE SYSTEMS - PART 1: REQUIREMENTS |
| EN 50129 : 2003 COR 2010 | RAILWAY APPLICATIONS - COMMUNICATION, SIGNALLING AND PROCESSING SYSTEMS - SAFETY RELATED ELECTRONIC SYSTEMS FOR SIGNALLING |
| EN 50126-1:2017 | Railway Applications - The Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) - Part 1: Generic RAMS Process |
| EN 50121-5:2017 | Railway applications - Electromagnetic compatibility - Part 5: Emission and immunity of fixed power supply installations and apparatus |
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