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Copyright © 2014 by Cenbee Bullock PFS Consulting Ltd
PFS
Specialising
In Functional Safety
Minimising Systematic Failures in SIS Design
Integrity of Installation & Testing
+
P
installation
+
P
proof test error
+
P
bypassed
Probability of Systematic Failures due to Human Error
= P
design error
P
sys-human error
Minimising Systematic Failures in SIS Design
Cenbee Bullo k 25
th
March 2014