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Robin Clark 2011-02-05 11:36:26 +00:00
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@ -198,6 +198,7 @@ This is an early static analysis methodology, and concentrates
on SYSTEM level errors which have been investigated. on SYSTEM level errors which have been investigated.
The investigation will typically point to a particular failure The investigation will typically point to a particular failure
of a component. of a component.
The methodology is now applied to find the significance of the failure. The methodology is now applied to find the significance of the failure.
It is based on a simple equation where $S$ ranks the severity (or cost \cite{bfmea}) of the identified SYSTEM failure, It is based on a simple equation where $S$ ranks the severity (or cost \cite{bfmea}) of the identified SYSTEM failure,
$O$ its occurrence\footnote{The occurrence $O$ is the $O$ its occurrence\footnote{The occurrence $O$ is the
@ -211,6 +212,11 @@ This gives in effect
a prioritised `to~do~list', with higher $RPN$ values being the most urgent. a prioritised `to~do~list', with higher $RPN$ values being the most urgent.
\fmeagloss \fmeagloss
FMEA can be used as a quality improvement tool for industry. In this role,
it is a living document used to log system failures.
Management and quality product maintenance
can use the $RPN$ value for a new SYSTEM failure to decide on the urgency
of corrective action.
\subsubsection{ FMEA weaknesses } \subsubsection{ FMEA weaknesses }