RU ITEC421 - Dependability Analysis

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Across
  1. 2. this analysis identifies hazards and operational problems (acronym)
  2. 4. undesirable event at the root of a fault tree (-)
  3. 5. _______Analysis: fault tree analysis of logical structure and failure combinations
  4. 7. _______ Case: documented argument showing system meets safety needs
  5. 8. Mode and Effects Analysis bottom up inductive failure analysis analyzes component failure modes and effects
  6. 11. system ability to provide service despite faults (-)
  7. 17. ______ Analysis: fault tree analysis using probabilities to find top event probability
  8. 19. _______ Boundary: frontier between system and environment defines analysis scope Consequences _______ of Failure:results or impacts of a system or component failing
  9. 21. a state to be avoided
  10. 22. potential loss or harm from a hazard involves likelihood and severity
  11. 23. ______ Failure: system inability to deliver service as specified
  12. 24. system maintains safety after failure (-)
  13. 25. ____ Gate: fault tree symbol for logical disjunction
  14. 26. basis of the HazOp process (-)
  15. 27. ____ Gate: fault tree symbol for logical conjunction
Down
  1. 1. top down failure analysis documenting events leading to hazard (-)
  2. 3. system ability to avoid unacceptable service failures
  3. 6. item flowing in a HazOp flow model
  4. 9. Cause Failure multiple component failures from a single cause
  5. 10. ________ Fault: defect in the design including software
  6. 12. ______ of Failure: probability or frequency of a failure
  7. 13. deviation from a correct state that can lead to failure
  8. 14. Semantics externally visible behavior of a component when it fails
  9. 15. Fault: component failure over time
  10. 16. indivisible action or failure in a fault tree (-)
  11. 18. event resulting in unintended harm
  12. 20. defect in the system that can cause an error