Safety case & RAMS

From the safety directive to a defensible safety case: the common safety methods that structure risk assessment and the CENELEC 5012x chain that turns them into engineering evidence.

11 documents

1
DIR-2016-798Binding law
Directive on railway safety (recast)
The safety framework: SMS obligations and the single safety certificate.
2
CSM-RABinding law
Common Safety Method for Risk Evaluation and Assessment
The mandatory risk-assessment process for every significant change.
3
REG-2018-762Binding law
Common Safety Methods on Safety Management System requirements
What a safety management system must contain — the assessment baseline.
4
CSM-MONBinding law
Common Safety Method for Monitoring
The monitoring loop: proving the risk controls keep working after certification.
5
EN-50126-1Harmonised (OJ-cited)
Railway Applications — RAMS Part 1: Generic Process
The RAMS lifecycle — the backbone the safety case is organised on.
6
EN-50126-2Harmonised (OJ-cited)
Railway Applications — RAMS Part 2: Systems Approach to Safety
The systems approach to safety: hazard identification and SIL allocation.
7
EN-50129Harmonised (OJ-cited)
Railway Applications — Safety related electronic systems for signalling
The safety-case structure itself (generic product / generic & specific application).
8
EN-50716Harmonised (OJ-cited)
Railway Applications — Requirements for software development
Software assurance feeding the safety case at each SIL.
9
EN-50159Harmonised (OJ-cited)
Railway Applications — Safety-related communication in transmission systems
Safety-related communication: the transmission-channel part of the proof.
10
ETCS-SUBSET-091Binding law
ETCS Safety Requirements for Technical Interoperability (Subset-091)
Worked example of quantified safety targets in the ETCS domain.
11
REG-2019-779Binding law
System of certification of entities in charge of maintenance (ECM)
The maintenance side: ECM certification closing the operational safety loop.

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