Reliability analysis of fire detection and alarm systems (full text in pdf)
Dejan Ristić 1, a
Milan Blagojević 1,b
Lutvo Haznadarević 2,c
1University of Niš, Faculty of Occupational Safety, Serbia
2Logos Center, Collеge Mostar, Bosnia and Herzegovina
adejan.ristic@znrfak.ni.ac.rs
bmilan.blagojevic@znrfak.ni.ac.rs
chlutvo@yahoo.com
Abstract The aim of this paper is to determine the reliability of fire detection and alarm systems using fault
tree quantitative analysis. The analysis is performed using analytical and matrix procedures for determining
minimal cut sets and minimal path sets. The quantitative analysis focuses on a system installed in a production
hall, which contains a heat detector, a smoke detector, and a manual fire alarm. The top event analyzed was the
event “the fire detection and alarm system has not detected a fire”. Based on the analysis and the evaluation of
importance of the minimal cut sets, we were able to conclude that events such as line interruption, manual fire
alarm push-button failure, and short circuits are the most significant events as they are the biggest contributors
to fire detection and alarm system failure.
Keywords: reliability; fault tree analysis; minimal cut set; minimal path set; fire detection and alarm system.