Task: Manage Safety and Reliability Requirements
This task creates hazard analysis and derives safety and reliability requirements.
Disciplines: Development
Purpose
The purpose of this task is to identify and clarify the safety and reliability issues of the system for the purpose of identifying relevant safety and reliability requirements.
Relationships
Main Description
The hazard analysis is a key document that captures hazards, risks, faults, and control measures together. The control measures mitigate the risks and so must be captured as requirements on the system to manage the risks to an acceptable level.
Steps
Study hazard analysis
The hazard analysis summaries the hazards, faults, risks, and safety/reliability measures.
Identify hazards
Hazards are conditions to avoid. Hazards are analyzed using Fault Tree Analysis and/or Failure Means and Effect Analysis.
Quantify risks
Risk is the product of the severity of a hazard and its likelihood.
Identify safety and relaibility measures
Safety/reliability measures are design or analysis elements that decrease risk by either obviating the hazard, reducing its likelihood or reducing its severity.
Update hazard analysis
This step updates the hazard analysis with results of the safety and reliability analysis.
More Information