Modeling and reliability assessment of a 3-channel safety-instrumented system

Author

Liu, Y.L. ; Rausand, Marvin ; Jin, Hye-Jin

Author_Institution

Dept. of Production & Quality Eng., Norwegian Univ. of Sci. & Technol., Trondheim, Norway

fYear

2012

fDate

10-13 Dec. 2012

Firstpage

2098

Lastpage

2102

Abstract

Safety-instrumented systems (SISs) are often crucial in the prevention of accidents. In this study, several reliability assessment methods, including the approximation formulas in IEC 61508 and in the PDS handbook, and Markov and Petri net methods, are used to determine the reliability of a redundant SIS configuration with three parallel channels. The average probability of failure on demand (PFD_avg) is used as reliability measure, and common cause failures and proof tests are considered in the modeling. The results obtained by the different methods are compared, and characteristics of these methods in SIS reliability analysis are discussed.

Keywords

IEC standards; Markov processes; Petri nets; accident prevention; condition monitoring; failure analysis; probability; reliability; 3-channel safety-instrumented system; IEC 61508; Markov method; PDS handbook; Petri nets; SIS reliability assessment; accident prevention; probability-of-failure-on-demand; proof tests; redundant SIS configuration; Approximation methods; Firing; IEC standards; Maintenance engineering; Markov processes; Reliability; Safety; Markov method; PFDavg; Petri net; Safety-instrumented system; reliability;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Engineering and Engineering Management (IEEM), 2012 IEEE International Conference on

Conference_Location

Hong Kong

Type

conf

DOI

10.1109/IEEM.2012.6838116

Filename

6838116