2. Taking uncertainties into account
The data used for probabilistic calculations comes from the statistical processing of feedback from operating plants. Thus, from k observed failures over a cumulative observation time, T the failure rate can be estimated at . The accuracy of this estimate increases as k and T increase. It is generally estimated from the 90% confidence interval, ...
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Taking uncertainties into account
Taking dependencies into account, dynamic ADDs
Bibliography
Software tools
GRIF-Workshop software package (interactive graphics for reliability), developed by ELF and then for TOTAL by SATODEV.
module Tree: fault trees ;
ETree module: event trees ;
SIL module: BDF adapted to functional safety ;
Petri module: stochastic Petri nets ;
...
Standards and norms
- - CEI 61078 -
- - CEI 60050-192 -
- - CEI 61703 -
- - ISO/TR 12489 -
- - CEI 61025 -
- - CEI 61165 -
- - CEI 62551 -
- - CEI 61508 -
- - CEI 61511 -
- - CEI 62740 -
- - CEI 62502 -
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GRIF-Workshop software package. SATODEV (SAfety TOols DEVelopment) :
Organizations – Federations – Associations (non-exhaustive list)
International Electrotechnical Commission IEC (IEC)
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