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Designing Control and Protection Systems with Regard to Integrated Functional Safety and Cybersecurity Aspects

Abstract

This article addresses current problems of risk analysis and probabilistic modelling for functional safety management in the life cycle of safety-related systems. Two main stages in the lifecycle of these systems are distinguished, namely the design and operation. The risk analysis and probabilistic modelling differ in these stages in view of available knowledge and data. Due to the complexity and uncertainty involved, both qualitative and quantitative information can be useful in risk analysis and probabilistic modelling. Some methodological aspects of the functional safety assessment are outlined that include mod-elling of dependent failures or cybersecurity and verifying the safety integrity level (SIL) under uncertainty. It is illustrated how the assumptions in the process of risk analysis and probabilistic modelling influence results obtained and, therefore, potentially the decisions taken in functional safety management. Programmable control and safety systems play an important role in mitigating and controlling risks in the operation of hazardous installa-tions. This paper presents ways to deal with safety hazards involving such systems to be considered in risk analysis and integrated functional safety and cybersecurity manage-ment.

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DOI:
Digital Object Identifier (open in new tab) 10.3390/en14082227
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Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
ENERGIES no. 14, pages 2227 - 2250,
ISSN: 1996-1073
Language:
English
Publication year:
2021
Bibliographic description:
Śliwiński M., Piesik E.: Designing Control and Protection Systems with Regard to Integrated Functional Safety and Cybersecurity Aspects// ENERGIES -Vol. 14,iss. 8 (2021), s.2227-2250
DOI:
Digital Object Identifier (open in new tab) 10.3390/en14082227
Verified by:
Gdańsk University of Technology

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