Copyright DB Netz AG, licensed under CC-BY SA 3.0 DE (see full text in CC-BY-SA-3.0-DE)
ARCH.070 Calculate system deviation probability
SM-2812
-
Populate Confluence page for activity definition: ARCH.070 Calculate system deviation probability
IN PEER REVIEW
Goal | Calculate system deviation probabilities taking into account identified system level deviations and safety measures. |
---|---|
Requirements met by this process step | EN 50126-1 6.3.3.1, 6.3.3.2, 6.3.3.3 ISO 15288 6.4.3.3 e) |
Inputs | AMOD-004 Fault tree (per operational deviation) |
Outputs | AMOD-004 Fault tree (per operational deviation) (updated) |
Methodology | Following prerequisite activities have been completed in ARCH.067, ARCH.068 and ARCH.069:
In this activity the overall system level deviation probabilities shall be calculated, taking into account the aforementioned activities (initial fault tree, assessed deviations of external functional exchanges, additional safety measures). The result shall be be compared to the probability of the caused operational deviation:
|
Tools and non-human resources | Team for Capella (tbd - possibly a further tool or plugin for modelling fault trees - ticketed |
Cardinality | Once, with allowed revisions after changes in the operational level risk model or the system function definitions or after additional safety measure. |
Completion criteria | Overall system level deviation probability does not exceed the caused operational level deviation probability. |
Design review | ARCH.R.3 System capability review |
Step done by (Responsible) | RAMS architect Security architect |
Provides input to/assists (Contributes) | System architect |
Uses outputs (Informed) | None identified. |