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Reliability Software, Safety and Quality Solutions / Software / Failure Analysis Software / Event Tree (ETA)

Event Tree Analysis (ETA)

Download the latest version of RAM Commander V8.2 (November 2011)

Event Trees
are one of the most widely used methods in system risk analysis. It is an inductive failure analysis performed to determine the consequences of single failure for the overall system risk or reliability. Event Tree Analysis uses similar logic and mathematics as Fault Tree Analysis, but the approach is different - FTA uses deductive approach (from system failure to it's reasons) and ETA uses the inductive approach (from basic failure to it's consequences).

An event tree itself is a visual representation of single failure sequences, it's influence on other events and on the whole system.

Event Tree Analysis Example
Main window of the RAM Commander Event Tree Analysis Module

ETA Module Features

  • User-friendly and convenient tree building interface (zoom, export to clipboard as metafile, print, etc.)
  • Customizable graphical representation (diagram elements colors, styles etc.)
  • Events Library
  • Event Probability assessment models:
    user-defined
    O     calculated (repairable/unrepairable/constant mission time/periodical tests)
    O     linked to product tree element
    O     linked to FMECA Failure Mode, NHE or End Effect
    O     linked to Fault Tree basic event
    O     linked to Fault Tree gate or tree top event
  • Different Event logic types:
    O     Binary logic
              -  True/False
              -  Success/Failure
    O     Multiple alternatives (for events where not only True/False or Success/Failure outcomes are considered)
  • Different Event probability types
    O     Equal event probabilities in all sequences
    O     Different event probabilities in different sequences (conditional probabilities)
     


Functional Packages:
PREDICTOR

  • 5 Standard Operating Reliability Prediction Methods
  • BOM Builder, Temperature Curves, Mission Profile, and Import Wizard
  • Full set of ready-to-print Reliability Reports
  • Enhanced Report Generator for user defined reports

RELIABILITY PRO

  • 5 Standard Operating Reliability Prediction Methods
  • BOM Builder, Temperature Curves, Mission Profile, and  Import Wizard
  • User Defined Components Reliability Data Module
  • Full set of ready-to-print Reliability Reports
  • Enhanced Report Generator for user defined reports
  • Components Library Module (over 400k components)
  • RBD - Reliability Block Diagram

MAINTAINABILITY PRO

  • Maintainability Module (according to MIL-STD-472 Procedure 5A)
  • Built in libraries for Tasks, Times, STE, Skills, and Materials
  • Maintenance Engineering Report (MEA Report)
  • Maintenance Task Analysis Report
  • Full set of ready-to-print Reliability Reports
  • ILS Supprt Fields (user defined)
  • BOM Builder, Temperature Curves, Mission Profile & Import Wizard
  • Enhanced Report Generator for user defined reports
  • RCM/MSG-3 Module
  • FMECA Module

FAILURE ANALYSIS & ISOLATION

  • BOM Builder, and Import Wizard
  • FMECA (covering both Hardware & Functional) Module
  • Customizable FMECA Worksheet
  • FTA Module
  • FMECA Import/Export
  • Testability Module
  • Full set of FMECA & FTA ready-to-print Reports
  • Full set of ready-to-print Testability Reports including graphical trouble shooting, fault isolation, etc.
  • FMD-97 Library
  • Enhanced Report Generator for user defined reports

SAFETY ASSESSMENT

  • SSA supporting IEC 61508 (Safety Standard for Safety Instrumented Systems) and MIL-STD-882D (SHA, O&SHA), SAE, ARP 4754A, and ARP4761
  • Customizable FMECA Worksheet
  • FTA Module
  • RBD Module
  • Markov Chains Module
  • FMECA Import/Export
  • Full set of ready-to-print Safety Reports
  • Enhanced Report Generator for user defined reports

AVIATION SAFETY

  • SSA & FHA according to SAE, ARP 4754A, ARP4761, and FAR 25 1309b
  • FTA including ready-to print reports
  • MSG-3 (System, Zonal, and Structural) including ready-to-print reports
  • MMEL including ready-to-print 5-column report
  • FMECA including ready-to-print FMECA reports, BOM Builder, and Import Wizard
  • Enhanced Report Generator for user defined reports
  • Report Template Utility for layout customization

Download the latest version of RAM Commander V8.2 (November 2011)


See also:
RAM Commander homepage
Fault Tree Analysis Software Module
SoHaR Reliability and Safety Software Overview
Reliability&Safety Software Download
See SoHaR Reliability, Safety and Quality Services if you wish us to perform reliability prediction, analysis or other activities for you

 
 
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