Page 30 - Root Cause Failure Analysis
P. 30
Root Cause Failure Analysis Methodology 21
It also is necessary to verify the information derived from the interview process. One
tneans of verification is visual observation of the actual practices used by the produc-
tion and maintenance teams assigned to the area being investigated.
Questions to Ask
To listen more effectively the interviewer must be prepared for the interview, and prepa-
ration helps avoid wasting time. Prepared questions or a list of topics to discuss helps
keep the interview on track and prevents the interviewer from forgetting to ask questions
on key topics. Figure 34 is a flow sheet summarizing the interview process. Each inter-
view should be conducted to obtain clear answers to the following questions:
What happened?
Where did it happen?
will confirm failure mode. I Clarify event
Interview all personnel
directly and invrutly
involved In the event . .
Gather physical evidenoe that . .
-- Mathappened? I‘
Presarva dl Physical
the =ne of the event . .
J
Picturw, drawings and .
vldeo are useful tools. . . . Men did it happen? ‘
’
. . Men did it happen?
the emlmnment befm.
ducing. and afterthe event.
Data should Include all .
and environmental
.- Matchanged7 -‘
Figure 3-4 The interview process.
