F09sess7 6s - IE/PSY 577 Reliability Analysis Components in...

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1 IE/PSY 577 Session 7 Human Reliability Analysis 2 IE/PSY 577 Session 7 Reliability Analysis Compute system reliability from Model of system structure Component reliabilities 3 IE/PSY 577 Session 7 Serial and Parallel Systems A C B C B A 4 IE/PSY 577 Session 7 Reliability Analysis Components in series: R = (r 1 )x(r 2 )x…(r n ) Components in parallel: R = 1 - [(1-r 1 )(1-r 2 )….(1-r n )] 5 Reliability of a Serial System 6 Reliability of a Parallel System
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2 7 IE/PSY 577 Session 7 Hybrid Models R 1 R 3 R 2 R 4 R 3 R 2 R 1 Input Input Output Output 8 IE/PSY 577 Session 7 Human Reliability Analysis Analogous to machine reliability analysis Analyze human tasks and estimate error probabilities for each Enter probabilities into system model to obtain overall human reliability 9 IE/PSY 577 Session 7 Human Error Probability The number of errors made by the human divided by the number of opportunities for such errors. Human Reliability 1 - (human error probability) 10 IE/PSY 577 Session 7 Computational Method Describe System Identify potential errors
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F09sess7 6s - IE/PSY 577 Reliability Analysis Components in...

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