TY - BOOK
T1 - On the reliability of fire detection and alarm systems
T2 - Exploration and analysis of data from nuclear and non-nuclear installations
AU - Nyyssönen, Teemu
AU - Rajakko, Jaana
AU - Keski-Rahkonen, Olavi
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
KW - fire detectors
KW - fire alarm systems
KW - failures
M3 - Report
T3 - VTT Working Papers
BT - On the reliability of fire detection and alarm systems
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -