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getting very very tired now

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Robin Clark 2013-08-10 18:45:56 +01:00
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submission_thesis/CH8_Conclusion/copy.tex
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@ -536,8 +536,9 @@ the safe failure fraction (SFF).
\section{Objective and Subjective Reasoning stages}
%Opportunity for formal definitions and perhaps an interface or process for achieving it....
The act of applying failure mode effects analysis, in terms of cause and effect is viewed from
an `engineering' mentality cause and effect perspective. This is the realm of the objective.
The act of applying failure mode effects analysis, is commonly performed from
an `engineering' oriented cause and effect perspective.
This is the realm of the objective.
%
The executive decisions about deploying systems are in the domain of management and politics.
%
@ -551,8 +552,7 @@ An example of objective and subjective factors is demonstrated in the accident r
nuclear accident~\cite{safeware}[App.D]. Here, a vent valve for the primary reactor coolant (pressurised water) became stuck open.
This condition causes an objectively derived failure mode --- `leakage~of~coolant' --- due to a stuck valve.
%
This, if recognised correctly by the operators, would have lead quickly to
to a reactor shut-down and
This, if recognised correctly by the operators, would have lead quickly to a reactor shut-down and
a maintenance procedure to replace the valve.
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The failure was not recognised in time however, and coolant was lost