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Safety Engineering, as a professional discipline, focuses on ensuring that an acceptable degree of safety consistent with society norms and mission requirements is an integral characteristic of the designed system.
Primary emphasis is placed on the identification, evaluation and elimination or control of hazards prior to the system use.
The analysis needs for any particular system varies with the scope, phase of development, and the system’s safety requirements. It is best if those system safety requirements are established prior to and concurrent with the system design process.
In essence, system safety is the application of engineering, science, and management principles, criteria and techniques to optimize safety within the constraints of operational effectiveness, time, and cost throughout all phases of the system life cycle.
Techniques used in the performance of the system safety analysis activity include but are not limited to:
 Accident Analysis
Cause-Consequence Analysis
Change Analysis
Critical Incident Technique
Event Tree Analysis
Facilities System Safety Analysis
Failure Modes, Effects and Criticality Analysis
Fault Hazard Analysis
Flow Analysis
Fault Tree Analysis
Human Error Analysis
Human Factors Analysis
Human Reliability Analysis
Interface Analysis
Job Safety Analysis
Management Oversight and Risk Tree (MORT) Analysis
Preliminary Hazard Analysis
Procedure Analysis
Root Cause Analysis, Safety Review
Subsystem Hazard Analysis
Task Analysis
Technique for Human Error Prediction
Uncertainty Analysis
Walk-Through Task Analysis
What-If Analysis
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