Taking 2oo3 as an example to study the improvement of Markov model considering periodic function test

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Taking 2oo3 as an example to study the improvement of Markov model considering periodic function test

Chen, Peng; Lin, Qinbei; Han, XueFeng

Journal of physics. Conference series, 04/2022, Volume: 2264, Issue: 1

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Abstract In order to make the safety instrumented system meet the functional safety requirements of the classification in a longer period of time, and considering the model incompleteness of the original Markov model, we propose to add the consideration of periodic functional testing to the original Markov model for modeling. The results show that the PFDavg of the safety instrumented system with periodic functional testing is lower than that of the safety instrumented system without periodic functional testing, and the Markov model with periodic functional testing is more comprehensive and more consistent with the engineering reality.

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