Source: Engineer for Safety Limited ( Phil Williams)
The section focusses on probability as an attribute from FTA elements.
This is arguably the least important attribute from FTA, particularly in system modeling and given the simplistic treatment of probability in this section.
A far more valuable attribute from FTA is the cut set, or minimal cut set at any gate within the FTA hierarchy.
This is a major shortfall that I believes renders the use of these profiles within system modeling very limited, particularly in early system work before the base event probabilities can be known. Even in later lifecycle phases, the simplistic treatment of probabilities that ignores real world interdependence renders the results from such modeling misleading at best.
Reported: RAAML 1.0b1 — Fri, 30 Apr 2021 10:41 GMT
Updated: Wed, 15 Dec 2021 21:35 GMT
RAAML11 — Lack of consideration of Cut Sets
- Key: RAAML11-5
- OMG Task Force: Risk Analysis and Assessment Modeling Language (RAAML) 1.1 RTF