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Handout 3
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Page 5
InstMC Functional Safety 2016Conference
Hardware Safety Integrity gets a lot of attention!
Restricted© SiemensAG 2013 All rights reserved.
Page 6
InstMC Functional Safety 2016Conference
But if you look at.....
Causes of Major Incidents - Failure Analysis of Control Systems
Note : Based on 34 investigated incidents in the UK
Health and Safety Executive (GB): Out of Control.
Whycontrol systems go wrong and how to prevent failure.
HSE Books 1995
44,1%
20,6%
14,7%
5,9%
14,7%
Design & Implementation
Installation &
Commissioning
Operation & Maintenance
Changes after startup
Specification