Preliminary communication
https://doi.org/10.37798/2005542433
COMMON CAUSE FAILURES IN PROBABILISTIC SAFETY ASSESSMENT OF TECHNICAL SYSTEMS
Igor Vuković
Ivan Vrbanić
Zdenko Šimić
Vladimir Mikuličić
Abstract
Nowadays technical systems’ safety (power-generating, industrial, engineers’ facilities) is a significant issue due to widespread usage of technological processes in modern society, increasing consequences of facilities’ failures and their increased importance. Over the last thirty years the probabilistic safety analyses have been increasingly applied in technical engineering practice. Various failure modes of system of concern are mathematically and explicitly modelled by means of fault tree structure. Statistical independence of basic events from which the fault tree is built is not acceptable for an event category referred to as common cause failures. The paper considers the mathematical modelling of common cause failures within the fault trees of technical systems as a constituting part of the overall probabilistic safety assessment and gives the practical overview based on the experience gained so far.
Keywords
probabilistic safety analysis; dependent failures; common cause; fault tree; safety
Hrčak ID:
345212
URI
Publication date:
15.3.2005.
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