3. Fault tree for a fire detection system

3.1 System overview

The purpose of this example is to illustrate how the fault tree technique can be used to determine the minimum combinations of events that lead to the loss of a system's main function, based on a tree decomposition, and to determine the importance factors of the initiating events that lead to the dreaded event.

Consider a fire detection system in a production workshop with closed doors. It comprises :

a heat detection system;
a smoke detection system ;
a manually operated alarm system as shown in figure 25...

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Fault tree for a fire detection system

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Bibliography

(1) - LIGERON (J.-C.) - Le cercle des fiabilistes disparus ou critique ce la raison fiabiliste – Une nouvelle école de Sûreté de fonctionnement ? Une nécessité - Editions préventique (2006).
(2) - LIGERON (J.-C.) - La fiabilité en mécanique -...

Websites

Advanced Logistics Developments Ltd

http://www.aldservice.com/

Air Force Quality Institute

http://www.au.af.mil/au/afqi/

American Society for Quality

Standards and norms

When it comes to standardization in the field of Dependability, there are a considerable number of international, national and industry-specific bodies and institutions which issue their own standards. In this section, we will only mention the main standards used in all industrial sectors and in the contractual clauses of invitations to tender. However, to avoid any ambiguity about the term "standard", the definition...