Article | REF: D5560 V1

SIL mastery and certification management - Railway sector

Author: Jean-Louis BOULANGER

Publication date: November 10, 2011

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2. Implementation of CENELEC standards EN 50126, EN 50128 and EN 50129

2.1 Reminders

First of all, we need to remind you what dependability is.

Definition 1 (dependability). – Dependability is defined as the quality of the service delivered by a system, such that users of this service can place justified confidence in the system delivering it.

We use definition 1 here, but it should be noted that there are more technical approaches to dependability. For information on the IEC/IEC 1069 standard, dependability is the measure by which it can be shown that a system exclusively and correctly performs the task(s) assigned to it.

For further information on dependability and its implementation, please refer to the bibliography

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Implementation of CENELEC standards EN 50126, EN 50128 and EN 50129