TY - GEN
T1 - Model for Assessing the Safety Integrity Level of Electrical/ Electronic/Programmable Electronic Safety-Related Systems
AU - Torres, Esperanza S.
AU - Sriramula, Srinivas
AU - Celeita, David
AU - Ramos, Gustavo
N1 - ACKNOWLEDGEMENTS
This work was supported by the Lloyd’s Register
Foundation (LRF) Centre for Safety and Reliability
Engineering at the University of Aberdeen, UK; and the
Administrative Department of Science, Technology, and
Innovation of Colombia COLCIENCIAS under the grant
ANH-720. LRF is a UK charity that helps to protect the safety
of life and property, and support education, engineeringrelated research and public engagement.
PY - 2019/11/28
Y1 - 2019/11/28
N2 - Nowadays, different industries such as nuclear, automotive, process, chemical, and oil gas industry, must meet specific requirements in order to keep and reduce safety risks to as low as reasonably practicable (ALARP) level. As a result, the number of electrical/electronic/programmable electronic safety-related systems (E/E/PES) to control, prevent and mitigate hazardous events has increased. Moreover, new guidelines and procedures have been developed to guarantee the availability and function of safety systems over their service life. Based on Markov processes, this paper proposes a reliability model to assess the integrity and verify the design of E/E/PES safety-related systems. The average probability of failure on demand (PFDavg) and Safety Integrity Level (SIL), are used to determine the reliability performance of an E/E/PES in a low demand mode of operation in accordance with the functional safety principles of the IEC 61508 and IEC 61511 standards.
AB - Nowadays, different industries such as nuclear, automotive, process, chemical, and oil gas industry, must meet specific requirements in order to keep and reduce safety risks to as low as reasonably practicable (ALARP) level. As a result, the number of electrical/electronic/programmable electronic safety-related systems (E/E/PES) to control, prevent and mitigate hazardous events has increased. Moreover, new guidelines and procedures have been developed to guarantee the availability and function of safety systems over their service life. Based on Markov processes, this paper proposes a reliability model to assess the integrity and verify the design of E/E/PES safety-related systems. The average probability of failure on demand (PFDavg) and Safety Integrity Level (SIL), are used to determine the reliability performance of an E/E/PES in a low demand mode of operation in accordance with the functional safety principles of the IEC 61508 and IEC 61511 standards.
KW - functional safety
KW - IEC 61508
KW - Markov processes
KW - probability of failure on demand
KW - reliability assessment
KW - Safety integrity level
UR - http://www.scopus.com/inward/record.url?scp=85076764392&partnerID=8YFLogxK
U2 - 10.1109/IAS.2019.8911982
DO - 10.1109/IAS.2019.8911982
M3 - Conference contribution
SN - 9781538645406
T3 - IEEE Industry Applications Society Annual Meeting
BT - IEEE Industry Applications Society Annual Meeting
PB - Institute of Electrical and Electronics Engineers Inc.
ER -