Industry solutions
Railway
RAMS is a lifecycle, not a deliverable.
EN 50126 asks for RAMS to be specified, apportioned and demonstrated through every phase — from tender to decommissioning, across assets that run for thirty years. RAMSynapse keeps the whole chain live on one system model: targets, predictions, hazard evidence and service data, ready for the independent safety assessor at any point in the lifecycle.
Thirty-year assets, moving baselines
Mid-life refits, obsolescence swaps and fleet variants keep changing the design — RAMS evidence built as static documents ages out long before the rolling stock does.
The assessor wants the whole chain
An ISA reviewing the EN 50129 safety case asks for the path from hazard to tolerable hazard rate to quantified evidence — reconstructing it from spreadsheets costs assessment rounds.
Targets fragment across the consortium
RAM and safety targets apportioned across suppliers in spreadsheets drift with every revision — by design review nobody can prove the budgets still add up.
The regulatory landscape
The standards, and the modules that carry them.
EN 50126
Specification and Demonstration of RAMS
The railway RAMS lifecycle: risk analysis, apportionment of RAM and safety targets, and demonstration maintained through every phase from concept to decommissioning.
EN 50128
Software for Railway Control and Protection Systems
Software safety integrity for signalling and control — the SIL each function carries is set by the system-level risk analysis upstream, so the hazard evidence must hold.
EN 50129
Safety-related Electronic Systems for Signalling
The safety-case standard: technical safety report, hazard log, and quantified proof that each safety function meets its tolerable hazard rate.
ISO 22163
Rail Quality Management (ex-IRIS)
The rail sector's business-management requirements — RAMS and LCC activities, plus the closed-loop treatment of nonconformities the audits look for.
A project-typical chain
One model, every analysis.
How a rolling-stock or signalling project carries the EN 50126 RAMS case from tender targets to service demonstration — each result feeding the next analysis live, never retyped.
- Apportion the EN 50126 targetsAllocationBreak the tender-level RAM targets and tolerable hazard rates down the system breakdown — every subsystem supplier sees the budget they carry, and the roll-up always adds up.
- Predict against the apportionmentPredictionFailure-rate predictions per unit, compared live against the allocated budgets — a supplier's overrun surfaces the day their data lands, not at design review.
- Run the FMECA into the hazard logFMECAFailure modes inherit the predicted rates automatically; safety-relevant effects feed the hazard log that anchors the EN 50129 safety case.
- Demonstrate the tolerable hazard ratesFault TreeFault trees per safety function, basic events fed by the same failure rates the FMECA uses — quantified THR evidence straight into the technical safety report.
- Demonstrate through operationFRACASFleet failures flow back through FRACAS; observed reliability carries the RAM demonstration phase and keeps the safety case honest across the asset's life.
Bring the assessor a connected safety case.
See how a railway project runs apportionment, prediction, FMECA, fault trees and FRACAS on one shared system model — on your own infrastructure.