Morning edit
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@ -163,7 +163,7 @@ and let the set of all possible failure modes be $\mathcal{F}$.
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We can define a function $fm$
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\begin{equation}
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fm : \mathcal{C} \mapsto \mathcal{P}\mathcal{F}
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fm : \mathcal{C} \rightarrow \mathcal{P}\mathcal{F}
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\end{equation}
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defined by, where C is a component and F is a set of failure modes.
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@ -5,6 +5,12 @@
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% $Id: mybib.bib,v 1.3 2009/11/28 20:05:52 robin Exp $
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@ARTICLE{caninauto,
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AUTHOR = "H. Zeltwanger",
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TITLE = "Single Processor implementation of the CANopen Safety Protocol",
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JOURNAL = "CAN in Automation (CiA)",
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YEAR = "2008"
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}
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@ARTICLE{valueoflife,
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AUTHOR = "W.K. Viscusi",
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@ -48,7 +48,7 @@ For the Brewery, safety is of the highest importance.
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For the Nuclear power station
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\section{Terms and Concepts in // Safety Critical Engineering}
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\section{Terms and Concepts in \\ Safety Critical Engineering}
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\subsection{Safety Relevant Data Object}
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A Safety Relevant Data Object (SRDO)\cite{caninauto}, is a data structure describing the status of
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@ -58,8 +58,8 @@ the measure neutron flux.
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\subsection{Safety relevant Object Validation Time}
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Safety times can be given for SRDO's; these are termed Safety Related Object Validation Times (SROVT's)\cite{caninauto}. For instance were
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a flame to fail in operation in a gas burner
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standards state that the gas may not continue to be fed into the
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furnace for more than three seconds \cite{en298}.
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standards state \cite{en298} that the gas may not continue to be fed into the
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furnace for more than three seconds.
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We can say that the SROVT for a flame signal in a gas burner is 3 seconds.
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\subsection{Single and Double Failure Modes}
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A Safety critical system must self check within the relevant SROVT's.
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