Railway applications. Systematic allocation of safety integrity requirements

Railway applications. Systematic allocation of safety integrity requirements

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1   Scope

The scope of this Technical Report is to define 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.
The following picture may be used in order to detail more precisely the scope of this Technical Report:
Figure 1.1 — Scope of WG A10
fig_1-1
From a mechanistic point of view the task of this Technical Report is to define a method of calculation, which determines the integrity requirements (qualitatively and quantitatively) from the inputs stated above.