A “Toolbox” for Forensic Engineers

Introduction 9
Figure 1.6 CEDAC or cause-and-effect diagram, also known as an Ishekawa
diagram.
List
potential
causes
Information
Procedures
Prioritization
Select most
likely potential
causes; evaluate
each against
problem
specification
People
Equipment
and Plant Materials
Determine which
data would
identify potential
cause as a root cause
Figure 1.7 Flowchart for finding the root cause(s) of a problem.
No
Hypothesis
Generation
Problem
eliminated
Yes
Stop
Design
Studies
Collect
appropriate
data
No
Effect
Statistical
Tools
Analyze
data
Potential
cause
determined
to be a
root cause
Yes
Correct problems
and monitor results