PD CLC/TR 50451:2007 - Page 2

Railway applications. Systematic allocation of safety integrity requirements. | Status: Superseded, Withdrawn

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 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.