Politiques de Tests Partiels & Systèmes de Sécurité

Florent Brissaud (1, 2) , Anne Barros (3) , Christophe Bérenguer (3)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 UTT - Université de Technologie de Troyes
3 LM2S - Laboratoire Modélisation et Sûreté des Systèmes

A set of general formulas is proposed for the probability of failure on demand (PFD) assessment of MooN architecture (i.e. k-out-of-n) systems subject to partial and full tests. Partial tests (e.g. visual inspections, imperfect testing) may detect only some failures, whereas owing to a full test, the system is restored to an as good as new condition. Following the proposed approach and according to an example, performance estimations of the system and test policies are presented, by using the feedback from partial and full tests. An optimization of the partial test distribution is also proposed, which allows reducing the average probability of system failure on demand (PFDavg).

Mots clés: probabilité de défaillance à la demande; PFD; système instrumenté de sécurité; SIS; période de révision; test partiel; test complet

Domaines: Autre; Probabilités [math.PR]

Florent Brissaud, Anne Barros, Christophe Bérenguer. Politiques de Tests Partiels & Systèmes de Sécurité. Performances et Nouvelles Technologies en Maintenance, PENTOM 2009, Dec 2009, Autrans, France. pp.Politiques de Tests Partiels & Systèmes de Sécurité. ⟨hal-00507453⟩