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Fault Tree Diagrams
Fault Tree Diagrams take reliability block diagrams one step further
by adding logic symbols (and/or) to connect the blocks. (Similar to root
cause analysis.)
How to create a Fault Tree Diagram.
- Taking a failure event that occurred, analyze that event (ask why?)
- List failures, events, or conditions that had to exist to cause the
failure.
- Use logic symbols to connect the causes (e.g., this and that cause
the failure.)
Here is a sample Fault Tree Diagram created using the QI Macros
for Excel SPC software
The Fault Tree Diagram Template is just one of the tools included in the QI
Macros for Excel SPC Software for Excel.
Download
the FREE 30-day Evaluation copy of the QI Macros Excel SPC Software for Six
Sigma
Buy the QI Macros Now! Unconditional, No
Questions Asked, 90-day Money-Back Guarantee!
QI Macros Excel SPC Software for Histograms and Control Charts $139 Plus S&H
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The QI Macros for Excel $139,
is an inexpensive easy to use set of Excel add-ins for statistical process control
and Lean Six Sigma. It draws line, pie, bar, pareto, box whisker, histogram (Cp,
Cpk), scatter and control charts (with stability analysis).
It contains over 70 fill in the blank templates such as the Ishikawa diagram,
QFD, DOE, FMEA, PPAP, and Gage R&R for MSA. Performs ANOVA, t-test, F-test,
and regression analysis.

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