Title: Safety Integrity Evaluation of Safety Function
Authors: Ždánský, Peter
Balák, Jozef
Rástočný, Karol
Citation: 2018 International Conference on Applied Electronics: Pilsen, 11th – 12th September 2018, Czech Republic, 183-188.
Issue Date: 2018
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35498
ISBN: 978–80–261–0721–7
ISSN: 1803–7232
Keywords: bezpečnostní funkce;bezpečnostní integrita;bezpečnostní systém;sPLC;IEC 61 508;Markovův řetězec;validace
Keywords in different language: safety function;safety integrity;safety related system;sPLC;IEC 61 508;Markov Chain;validation
Abstract in different language: For a possibility of using the safety relevant system in practice, it is necessary to prove, that safety requirements, which are defined based on results of risk analysis, are fulfilled. Part of proving the safety of safety relevant system is also quantitative evaluation of safety integrity of the hardware which is involved in the safety functions realization. Objective of the paper is to compare different ways of the quantitative hardware safety integrity evaluation. For a specific technological process are identified hazards, their consequences and from them resulting safety functions. For each defined safety function is, by three different procedures, calculated the probability of dangerous failure per hour. At the end of the paper are stated reasons of results mismatch, which were obtained using different approaches.
Rights: © Západočeská univerzita v Plzni
Appears in Collections:Applied Electronics 2018
Applied Electronics 2018

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