Examine changed elements for safety and reliability impact
As requirements change or design decisions are made, these can increase or decrease either safety or reliability (or both).
Those changes must be examined to see if they impact or even invalidate the existing hazard analysis. |
Perform Fault Tree Analysis
FTA analyses how faults and conditions interact to produce hazards. |
Perform Failure Modes and Effect Analysis
FMEA looks at how failures accumulate to produce undesirable conditions (hazards). |
Identify new and changed hazards
Hazard that are changed (such as by increasing or decreasing their likelihood or severity) and newly introduced hazards
need to be added into the hazard analysis. |
Quantify risks for new or changed hazards
Risks need to be determined by quantifying the nature of the hazards in terms of likelihood and severity. |
Update Hazard Analysis
The hazard analysis needs to be updated when a change in requirements, design, or environment affects the safety and
reliability of the system. |
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