Functional Safety 2014

364-365 / 973

© ABB
| Slide 17
Common Cause Failures Avoidance
Design Strategies
Hardware
§ Physical Separation
§ Redundancy and modularity
(different board, different racks)
§ Diversity
§ Redundancy via different
technology
§ Verification and Validation
Software
§ Physical Separation
§ Different execution path
§ Diversity
§ Different object code
§ Verification and Validation
Nov 04, 2014