Fault Tree Analysis (FTA)
Fault Tree Analysis (FTA)
Critical systems and products often have protection layers, fault tolerance and redundancies in order to prevent severe safety events. In order to calculate the occurrence probability of safety events, combinations of sub-events have to be accounted for.
BQR’s Fault Tree Analysis software provides quick and accurate analysis of complex scenarios, providing deep insight regarding drivers of safety events.
Benefits
Fault Tree Analysis software by BQR complies with IEC 61025 standard
How It Works
Steps for conducting analyses using BQR’s Fault Tree Analysis Software
Import
- Import the failure modes, effects, and ratios from BQR’s FMECA module using BQR’s Core Database
User Input
- Define Mission Time
- Add failure modes, failure rates, and effects (skip this step if initial data was imported)
- Add additional external events such as harsh weather or human errors
- Define gate types (logical relation between sub-events)
- Define special mission time and common causes
Analysis
- Probability analysis
- Cut-Sets – minimal event combinations that cause the top event
- Sensitivity analysis – identify key failure drivers
Reports
- Probability analysis
- Cut-Sets
- Sensitivity analysis
- All reports can be saved as Excel, HTML or Word files
Fault Tree Analysis Software Features
- Large variety of gate types: OR, AND, K out of N, Standby, AND Priority, NOT and XOR
- Binary Decision Diagram (BDD) used for analysis of complex cases
- Cut-sets analysis
- Sensitivity analysis
- Model various recovery types and Inspections