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5. Glossary
Arbre de défaillance, arbre de panne; fault tree
Logic diagram showing sub-entity failures, external events or their combinations, which have caused a predefined undesired event.
Availability, operating status; up state
A condition characterized by the ability to function as required.
State of unavailability, state of failure; down state
A condition characterized by inability to function as required.
Instantaneous availability, A(t)
Probability of being available at a given time.
Instantaneous unavailability, U(t)
Probability of being unavailable at a given time.
Average availability,
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Glossary
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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 -
Directory
Manufacturers – Suppliers – Distributors (non-exhaustive list)
GRIF-Workshop software package. SATODEV (SAfety TOols DEVelopment) :
Organizations – Federations – Associations (non-exhaustive list)
International Electrotechnical Commission IEC (IEC)
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