On the reliability of fire detection and alarm systems: Exploration and analysis of data from nuclear and non-nuclear installations

Teemu Nyyssönen, Jaana Rajakko, Olavi Keski-Rahkonen

Research output: Book/ReportReport

Abstract

A literature review of reliability data of fire detection and alarm systems was made resulting to rough estimates of some failure frequencies. No theoretical or technical articles on the structure of reliability models of these installations were found. Inspection records of fire detection and alarm system installations by SPEK were studied, and transferred in electronic data base classifying observed failures in failure modes (59) and severity categories (3) guided by freely written records in the original data. The results of that work are presented without many comments in tabular form in this paper. A small sample of installations was collected, and number of components in them was counted to derive some distributions for determination of national populations of various components based on know total amount of installations. From NPPs (Loviisa, Olkiluoto and Barsebäck) failure reports were analysed, and observed failures of fire detection and alarm systems were classified by severity and detection mode. They are presented here in tabular form for the original and new addressable systems. Populations were counted individually, but for all installations needed documents were not available. Therefore, presented failure frequencies are just first estimates, which will be refined later.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages70
ISBN (Electronic)951-38-6569-X
Publication statusPublished - 2005
MoE publication typeNot Eligible

Publication series

SeriesVTT Working Papers
Number18

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Keywords

  • fire detectors
  • fire alarm systems
  • failures

Cite this

Nyyssönen, T., Rajakko, J., & Keski-Rahkonen, O. (2005). On the reliability of fire detection and alarm systems: Exploration and analysis of data from nuclear and non-nuclear installations. VTT Technical Research Centre of Finland. VTT Working Papers, No. 18 http://www.vtt.fi/inf/pdf/workingpapers/2005/W18.pdf