PREN 50126-4 : DRAFT 2012

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Abbreviations
5 Overall Framework of the Part 4
6 E/E/PE systems management and organisation
7 E/E/PE systems assurance
8 E/E/PE system development: system aspects
9 E/E/PE development: Generic hardware
10 E/E/PE development: Configurable hardware
11 E/E/PE systems operation and maintenance
Annex A (normative) - Techniques/Measures
Annex B (normative) - Electronic/Electrical Component
        failure modes
Annex C (normative) - Key Hardware/System Safety
        Roles and Responsibilities
Annex D (informative) - Technical Recommendations
        for SIL3 and SIL4 functions
Annex E (informative) - Guidance on Programmable
        Devices
Annex F (normative) - Previously Developed Hardware
        (PDH) and Commercial Off The Shelf
        Hardware (COTSH)
Annex G (informative) - Structure of Hardware/Systems
        Safety Cases
Annex H (informative) - Bibliography of techniques

Gives railway duty holders and the railway suppliers, throughout the European Union, with a process which will enable the implementation of a consistent approach to the management of reliability, availability, maintainability and safety, denoted by the acronym RAMS.